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417
Services &
Application
Guide
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Cooper Bussmann
Ser vices & Application
Guide
Section Contents
Cooper Bussmann Ser vices
Engineering . .................................418
Engineering – OSCAR™ 2.0 Compliance 
Software . ...............................419-420
Training .....................................421
Testing . ....................................422
Custom Products .........................423
Application Guide
Fuse technology . ..........................424-430
Motor circuit branch circuit protection ...............431
Glossar y . ............................... 432-434
Out-of-stock substitution/upgrades ................434
Industrial & commercial fuse applications ........... 435
Catalog number index ................. 436-440
Sales support . ...............................441
Downtime Reduction, Workplace 
Safety & Code Compliance
Ser vices to Increase Your Productivity Through Protection

Description Catalog Number

One Line Description Development CBSV-ES-EN1

Data Collection CBSV-ES-EN2

Shor t-Circuit Study CBSV-ES-EN3

Selective Coordination Study CBSV-ES-EN4

Arc-Flash Study CBSV-ES-EN5

Labeling CBSV-ES-EN6

Arc-Flash Training CBSV-ES-EN7

Maintenace Plan for Arc-Flash Study CBSV-ES-EN8

Engineering Catalog Numbers

Visit www.cooperbussmann.com/services

418

Services

Arc-Flash Safety and Productivity

The Cooper Bussmann®Ser vices team has the experience

in power system design, analysis and electrical safety to best

assess and make recommendations tha t of fer

maximum protection and productivity. We go beyond just

understanding electrical standards and regulations, actively

participating in improving circuit protection and electrical

safety.

Our comprehensive service offerings include:

1 - Electrical System One-Line Diagram Development

2 - Short-Circuit Cur rent Analysis

3 - Overcur rent Protective Device Time-Current Curve

Characteristic

4 - Overcur rent Protective Device Coordination

Analysis

5 - Arc-Flash Hazard Analysis

6 - Arc-Flash Hazard Label Production

7 - Electrical Safety Training

8 - Annual Maintenance

Engineering

To Order :

To find out more contact your local Cooper Bussmann

representative, or visit us online at

www.cooperbussmann.com/services.

Total

Electrical Safety

from

Cooper

Bussmann

Visit www.cooperbussmann.com/oscar 419

Services &

Application

Guide

Services

Engineering – OSCAR™ 2.0 Compliance Software

Order Information

Description Catalog Number

OSCAR™ 2.0 Compliance Software CBSV-SC-EN8

Annual Subscription

To Subscribe:

Contact your local Cooper Bussmann distributor, or visit us

online at www.cooperbussmann.com/oscar.

Enhanced Cooper Bussmann®OSCAR™ Software

Speeds Code & Standards Compliance

The new Cooper Bussmann®OSCAR™ Version 2.0 SCCR

(Short-Circuit Current Rating) compliance

software easily guides you through entering your

electrical panel’s components and calculates an

assembly SCCR. This award winning, online, essential

design tool allows you to comply quickly and accurately with

2008 NEC®and UL 508A Supplement SB for assembly

SCCR marking requirements:

• Industrial Control Panels [409.110]

• Industrial Machinery Electrical Panels [670.3(A)]

• HVAC Equipment [440.4(B)]

New Project Management Features:

• Simplify your panel design and project organization.

• Save and edit existing panel designs.

• Save multiple panels under a single project.

• Copy existing panels to new projects.

New Intuitive Navigation:

• Display your one-line diagram.

• Select from pre-loaded circuit templates.

• Identify the weakest link component automatically.

• Print reports and one-line diagrams for required

SCCR documentation.

• Utilize mouse-over tips to enhance your design.

Design with Confidence:

• Logic updated to current UL requirements.

• Extensive 55,000+ component database.

• Search by partial part number or device rating.

• Custom device option allows for entering specialized

component rating information.

Calculate Assembly SCCR with Ease &

Confidence

20062006

Visit www.cooperbussmann.com/oscar

420

Services

Engineering – OSCAR™ 2.0 Compliance Software

Cooper Bussmann®OSCAR™ 2.0 Software

The Cooper Bussmann OSCAR 2.0 Compliance Software is maintained online to provide you with the most current UL design

standards, and to continuously update our product search database with new components and their individual ratings. This software

is available 24/7—365 with a one-year subscription.

Additional Features:

• Simplify your panel design and project

organization with the My Projects feature.

• Copy existing designs to new projects.

• Display your one-line diagram as each component

is added through the new build-a-circuit

graphical interface.

• Save and edit existing panel designs.

• Save multiple panels under a single project.

• Select from pre-loaded templates of common circuit

types for faster design development.

• Detect combination ratings automatically.

• Utilize mouse-over tips to enhance your design.

All calculating activity takes place on the Cooper Bussmann server. Your computer only needs to have sufficient band width

access to the Internet and the minimum requirements listed below. Performance is optimized by utilizing Internet Explorer and a

PC. Apple/Macintosh computers and other web browsers may compromise OSCAR 2.0 performance.

• Computer: Pentium 1 PC or equivalent

• Web Browser: Internet Explorer 5.5 with Java script and cookies enabled

• Internet Connection: ADSL minimum

Computer System Requirements:

New User Interface Easily Search the OSCAR Database to

Aid in Design & Par t Selection

Improved Results & Documentation

Detailed Online Report or Print Option

Displays Panel Information

Including Assembly SCCR

Red Circle

Easily Identifies “Weakest Link”

Component Limiting

Assembly SCCR

Displays Actual One-Line Diagram Drop-Down Menus

Enhance Search Capabilities

Visit www.cooperbussmann.com/services 421

Services &

Application

Guide

Services

Training

Knowledge That Minimizes Risk to Maximize Productivity

and Protection

Technology evolves, the Code and standards change, and

new personnel are joining your operation. How do you

manage this changing environment while still focusing on what

you do best – running your operation? Expert training from

Cooper Bussmann is the solution. We provide the training

when and where you need it. Cooper Bussmann can deliver

our world-class safety and technical training on-site at your

facility or ours.

Publications and e-Training Modules

Cooper Bussmann®Ser vices has developed advanced,

value-added technical resources to meet the more

demanding needs around Code compliance, and

electrical design and safety.

Description Catalog Number

Designing Commercial & Industrial Power Systems Per Person CBSV-ES-ED1

Understanding Short-Circuit Cur rent Rating Basics 1 Hour CBTR-SC-1HP

Designing Panels with Higher SCCRs 2 Hour CBTR-SC-2HP

Understanding Electrical Safety Basics 1 Hour CBTR-ES-1HP

Electrical Hazards and Designing for Safety 2 Hour CBTR-ES-2HP

NFPA 70E Workplace Guidelines 8 Hours (0.8 CEU) CBTR-ES-1DA

Safety Basics User Kit Hard Copy CBSV-ES-ED3

Safety Basics Trainer Kit Hard Copy CBSV-ES-ED4

Safety Basics Video (VHS) Hard Copy CBSV-ES-ED5

Safety Basics CD Hard Copy CBSV-ES-ED6

Safety Basics Handbook Hard Copy CBPUB-ES-ED1H

Selecting Protective Devices (SPD) Hard Copy CBPUB-ES-ED2H

Electrical Plan Review (EPR) and Answer Sheet Hard Copy CBPUB-ES-ED3H

Interr upting Ra ting Overcurrent Protection DVD Hard Copy CBPUB-ES-ED30H

Selective Coordination: Preventing Blackouts DVD Hard Copy CBPUB-ES-ED31H

Current Limita tion Overcurrent Protection DVD Hard Copy CBPUB-ES-ED32H

Motor Star ter Protection: Overcurrent DVD Hard Copy CBPUB-ES-ED33H

Motor Protection DVD Hard Copy CBPUB-ES-ED34H

Specification Grade Protection DVD Hard Copy CBPUB-ES-ED35H

Overcurrent Protection 6 DVD Set Hard Copy CBPUB-ES-ED36H

Training Catalog Numbers

Training:

To ar range a Cooper Bussmann®training seminar, contact

your local Cooper Bussmann representative, or e-mail us

at services@cooperbussmann.com.

How To Order :

For detailed descriptions on

this portfolio visit

www.cooperbussmann.com/services.

Hardcopy materials are available

through your local Cooper Bussmann

distributor.

Visit www.cooperbussmann.com

422

Services

Testing

Performance and Compliance Certification for

Components and Assemblies

The Cooper Bussmann®Paul P. Gubany Center for High

Power Technology a t Cooper Bussmann is the electrical indus-

tr y’s most comprehensive facility for testing and cer tifying elec-

trical components and assemblies.

OEM customers make the Gubany Center their first choice in

testing equipment such as:

• Drives, both AC and DC

• Circuit breakers

• Motor control centers

• Soft star ter s

• Fuses

• Power distribution panels

• Surge suppressors

• Cables

Our technicians conduct tests to many global agency

standards including:

Wide Range of Capability

Built to exceed the short circuit capacity of today’s high power

electrical distribution systems, the Gubany Center performs:

• Ultra-high power testing from 200kA to 300kA at 600Vac,

three-phase

• Medium power testing from 5kA to 200kA at 600Vac, single-

and three-phase; to 100kA a t 1450Vac single-phase; to

100kA at 1000Vdc

• Low power testing up to 5kA at 600Vac, single-phase.

Description Catalog Number

High Power Testing Hourly Rate CBSV-ES-TEHP

Medium Power Testing Hour ly Rate CBSV-ES-TEMP

Low Power Testing Hourly Rate CBSV-ES-TELP

Testing Catalog Numbers

To Order :

To find out more contact your local

Cooper Bussmann

representative, or visit us online at

www.cooperbussmann.com/services.

• ANCE

• ANSI

•CE

• CSA

• ETL

• IEC, and

• Underwriters

Laboratories

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 423

Services &

Application

Guide

Services

Custom Products

Creating the Right Answers to Unique or Demanding

Needs

When you wish to gain a competitive edge or improve your

product's performance, have Cooper Busmann provide a

custom product that can:

• Improve functionality and utility

• Fit unique design needs

• Reduce labor and component costs

Our Exper tise Is Your Advantage

For over 90 years, Cooper Bussmann has designed and

manufactured products that improve electrical safety and

performance. Whether it's modifying an existing product or

creating a new one, our experience effectively brings together

the skills to design, prototype, test, manufacture and secure

agency approvals to deliver a single component,

sub-assembly or finished product.

Cooper Busman can design and manufacture products that

integrate:

• Fuses - with the right size and performance

characteristics

• Fuse holder s and blocks - with the requisite ter mina tions,

mounting options and safety features

• Wire connection products - tha t make wiring simpler,

safer and faster

• Molded products - tha t give the unique shape your

product needs

• Power distribution products - that meet prevailing agency

and Code requirements

In-House Testing

All electrical performance testing of your custom products

can be performed a t the Cooper Bussmann®Paul P. Gubany

Center for High Power Technology, an ASTA and CSA

accredited, and an ANCE Designated facility.

We're a ble to conduct electrical perfor mance testing that

replicates any power system to be encountered in any

country, covering:

• Up to 300kA and 600Vac

• Up to 100kA and 1000Vdc

And our technicians conduct tests to many global agency

standards including:

• ANCE

• ANSI

•CE

• CSA

• ETL

• IEC, and

• Underwriter s Laboratories

To Find Out More:

If you need a custom solution to a product problem, submit a

Request for Quotation to your local authorized Cooper

Bussmann distributor or sales representative.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

424

Application Guide

Fuse Technology

Circuit Protection

The following is a basic introduction to overcurrent protection

and fuse technology. In depth information on the selection and

application of overcurrent protective devices is available in the

Cooper Bussmann publication “Selecting Protective Devices”

(SPD). This publication is available free of charge as a PDF

download at www.cooperbussmann.com/spd.

Electrical distribution systems are often quite complicated.

They cannot be absolutely fail-safe. Circuits are subject to

destructive overcurrents. Harsh environments, general

deterioration, accidental damage, damage from natural

causes, excessive expansion, and/or overloading of the

electrical distribution system are factors which contribute to the

occurrence of such overcurrents. Reliable protective devices

prevent or minimize costly damage to transformers,

conductors, motors, and the other many components and

loads that make up the complete distribution system. Reliable

circuit protection is essential to avoid the severe monetary

losses which can result from power blackouts and prolonged

downtime of facilities. It is the need for reliable protection,

safety, and freedom from fire hazards that has made the fuse a

widely used protective device.

Overcurrents

An overcurrent is either an overload current or a short-circuit

current. The overload current is an excessive current relative to

normal operating current, but one which is confined to the

normal conductive paths provided by the conductors and other

components and loads of the distribution system. As the name

implies, a short-circuit current is one which flows outside the

normal conducting paths.

Overloads

Overloads are most often between one and six times the

normal current level. Usually, they are caused by harmless

temporary surge currents that occur when motors are

started-up or transformers are energized. Such overload

currents, or transients, are normal occurrences. Since they are

of brief duration, any temperature rise is trivial and has no

harmful effect on the circuit components. (It is important that

protective devices do not react to them.)

Continuous overloads can result from defective motors (such

as worn motor bearings), overloaded equipment, or too many

loads on one circuit. Such sustained overloads are destructive

and must be cut off by protective devices before they damage

the distribution system or system loads. However, since they

are of relatively low magnitude compared to short-circuit

currents, removal of the overload current within minutes will

generally prevent equipment damage. A sustained overload

current results in overheating of conductors and other

components and will cause deterioration of insulation, which

may eventually result in severe damage and short-circuits if not

interrupted.

Short-Circuits

Whereas overload currents occur at rather modest levels, the

short-circuit or fault current can be many hundred times larger

than the normal operating current. A high level fault may be

50,000A (or larger). If not cut off within a matter of a few

thousandths of a second, damage and destruction can become

rampant—there can be severe insulation damage, melting of

conductors, vaporization of metal, ionization of gases, arcing,

and fires. Simultaneously, high level short-circuit currents can

develop huge magnetic-field stresses. The magnetic forces

between bus bars and other conductors can be many hun-

dreds of pounds per linear foot; even heavy bracing may not

be adequate to keep them from being warped or distorted

beyond repair.

Fuses

The fuse is a reliable overcurrent protective device. A “fusible”

link or links encapsulated in a tube and connected to contact

terminals comprise the fundamental elements of the basic

fuse. Electrical resistance of the link is so low that it simply

acts as a conductor. However, when destructive currents occur,

the link very quickly melts and opens the circuit to protect

conductors, and other circuit components and loads. Fuse

characteristics are stable. Fuses do not require periodic

maintenance or testing. Fuses have three unique performance

characteristics:

1. Modern fuses have an extremely “high interrupting rating”—can

withstand very high fault currents without rupturing.

2. Properly applied, fuses prevent “blackouts.” Only the fuse nearest a fault

opens without upstream fuses (feeders or mains) being affected—fuses

thus provide “selective coordination.” (These terms are precisely defined

in subsequent pages.)

3. Fuses provide optimum component protection by keeping fault currents

to a low value…They are said to be “current limiting.”

Voltage Rating

The voltage rating of a fuse must be at least equal to or

greater than the circuit voltage. It can be higher but never

lower. For instance, a 600V fuse can be used in a 208V circuit.

The voltage rating of a fuse is a function of its capability to

open a circuit under an overcurrent condition. Specifically, the

voltage rating determines the ability of the fuse to suppress the

internal arcing that occurs after a fuse link melts and an arc is

produced. If a fuse is used with a voltage rating lower than the

circuit voltage, arc suppression will be impaired and, under

some fault current conditions, the fuse may not clear the

overcurrent safely. Special consideration is necessary for

semiconductor fuse and medium voltage fuse applications,

where a fuse of a certain voltage rating is used on a lower

voltage circuit.

Amp Rating

Every fuse has a specific amp rating. In selecting the amp

rating of a fuse, consideration must be given to the type of load

and code requirements. The amp rating of a fuse normally

should not exceed the current carrying capacity of the circuit.

For instance, if a conductor is rated to carry 20A, a 20A fuse is

the largest that should be used. However, there are some

specific circumstances in which the amp rating is permitted to

be greater than the current carrying capacity of the circuit.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 425

Services &

Application

Guide

Application Guide

Fuse Technology

A typical example is the motor circuit; dual-element fuses

generally are permitted to be sized up to 175% and non-time-

delay fuses up to 300% of the motor full-load amps. As a rule,

the amp rating of a fuse and switch combination should be

selected at 125% of the continuous load current (this usually

corresponds to the circuit capacity, which is also selected at

125% of the load current). There are exceptions, such as when

the fuse-switch combination is approved for continuous

operation at 100% of its rating.

Interr upting Rating

A protective device must be able to withstand the destructive

energy of short-circuit currents. If a fault current exceeds the

capability of the protective device, the device may actually

rupture, causing additional damage. Thus, it is important when

applying a fuse or circuit breaker to use one which can sustain

the largest potential short-circuit currents. The rating which

defines the capacity of a protective device to maintain its

integrity when reacting to fault currents is termed its

“interrupting rating”. The interrupting rating of most branch-

circuit, molded case, circuit breakers typically used in

residential service entrance panels is 10,000A. (Please note

that a molded case circuit breaker’s interrupting capacity will

typically be lower than its interrupting rating.) Larger, more

expensive circuit breakers may have interrupting ratings of

14,000A or higher. In contrast, most modern, current-limiting

fuses have an interrupting rating of 200,000 or 300,000A and

are commonly used to protect the lower rated circuit breakers.

The National Electrical Code, Section 110-9, requires

equipment intended to break current at fault levels to have an

interrupting rating sufficient for the current that must be

interrupted.

Selective Coordination – Prevention of Blackouts

The coordination of protective devices prevents system power

outages or blackouts caused by overcurrent conditions. When

only the protective device nearest a faulted circuit opens and

larger upstream fuses remain closed, the protective devices

are “selectively” coordinated (they discriminate). The word

“selective” is used to denote total coordination…isolation of a

faulted circuit by the opening of only the localized protective

device.

This diagram shows the minimum ratios of amp ratings of Low-Peak

Yellow fuses that are required to provide “selective coordination”

(discrimination) of upstream and downstream fuses.

Unlike electromechanical inertial devices (circuit breakers), it is

a simple matter to selectively coordinate fuses of modern

design. By maintaining a minimum ratio of fuse-amp ratings

between an upstream and downstream fuse, selective

coordination is assured.

Current Limitation – Component Protection

A non-current-limiting protective device, by permitting a short-

circuit current to build up to its full value, can let an immense

amount of destructive short-circuit heat energy through before

opening the circuit.

A current-limiting fuse has such a high speed of response that

it cuts off a short-circuit long before it can build up to its full

peak value.

If a protective device cuts off a short-circuit current in less than

one-quarter cycle, before it reaches its total available (and

highly destructive) value, the device is a “current-limiting”

device. Most modern fuses are current-limiting. They restrict

fault currents to such low values that a high degree of

protection is given to circuit components against even very

high short-circuit currents. They permit breakers with lower

interrupting ratings to be used. They can reduce bracing of bus

structures. They minimize the need of other components to

have high short-circuit current “withstand” ratings. If not limited,

short-circuit currents can reach levels of 30,000 or 40,000A or

higher in the first half cycle (.008 seconds, 60Hz) after the start

of a short-circuit. The heat that can be produced in circuit

components by the immense energy of short-circuit currents

can cause severe insulation damage or even explosion. At the

same time, huge magnetic forces developed between

conductors can crack insulators and distort and destroy

bracing structures. Thus, it is important that a protective device

limit fault currents before they reach their full potential level.

KRP-C

1200SP 2:1 (or more)

LPS-RK

600SP

LPS-RK

200SP

2:1 (or more)

Initiation of

short-circuit

current

Normal

load current

Areas within waveform

loops represent destructive

energy impressed upon

circuit components

Circuit breaker trips

and opens short-circuit

in about 1 cycle

Fuse opens and clears

short-circuit in less

than ⁄Ω™ cycle

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

426

Application Guide

Fuse Technology

Operating Principles of Cooper Bussmann®Fuses

The principles of operation of the modern, current-limiting

fuses are covered in the following paragraphs.

Non-Time-Delay Fuses

The basic component of a fuse is the link. Depending upon the

amp rating of the fuse, the single-element fuse may have one

or more links. They are electrically connected to the end

blades (or ferrules) (see Figure 1) and enclosed in a tube or

cartridge surrounded by an arc quenching filler material.

Cooper Bussmann®Limitron®and T-Tron®fuses are both

single-element fuses.

Under normal operation, when the fuse is operating at or near

its amp rating, it simply functions as a conductor. However, as

illustrated in Figure 2, if an overload current occurs and

persists for more than a short interval of time, the temperature

of the link eventually reaches a level which causes a restricted

segment of the link to melt. As a result, a gap is formed and an

electric arc established. However, as the arc causes the link

metal to burn back, the gap becomes progressively larger.

Electrical resistance of the arc eventually reaches such a high

level that the arc cannot be sustained and is extinguished. The

fuse will have then completely cut off all current flow in the

circuit. Suppression or quenching of the arc is accelerated by

the filler material. (See Figure 3.)

Single-element fuses of present day design have a very high

speed of response to overcurrents. They provide excellent

short-circuit component protection. However, temporary,

harmless overloads or surge currents may cause nuisance

openings unless these fuses are oversized. They are best

used, therefore, in circuits not subject to heavy transient surge

currents and the temporary over-load of circuits with inductive

loads such as motors, transformers, solenoids, etc. Because

single-element, fast-acting fuses such as Limitron and

T-Tron fuses have a high speed of response to short-circuit

currents, they are particularly suited for the protection of circuit

breakers with low interrupting ratings.

Whereas an overload current normally falls between one and

six times normal current, short-circuit currents are quite high.

The fuse may be subjected to short-circuit currents of 30,000

or 40kA or higher. Response of current limiting fuses to such

currents is extremely fast. The restricted sections of the fuse

link will simultaneously melt (within a matter of two or three-

thousandths of a second in the event of a high-level fault

current).

The high total resistance of the multiple arcs, together with the

quenching effects of the filler particles, results in rapid arc

suppression and clearing of the circuit. (Refer to Figures 4 & 5)

Short-circuit current is cut off in less than a half-cycle, long

before the short-circuit current can reach its full value (fuse

operating in its current limiting range).

Figure 2. Under sustained overload, a section of the link melts and an

arc is established.

Figure 3. The “open” single-element fuse after opening a circuit

overload.

Figure 4. When subjected to a shor t-circuit current, several sections

of the fuse link melt almost instantly.

Figure 5. The “open” single-element fuse after opening a shor t circuit.

Figure 1. Cutaway view of typical single-element fuse.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 427

Services &

Application

Guide

Application Guide

Fuse Technology

Cooper Bussmann®Dual-Element Fuses

There are many advantages to using these fuses. Unlike single-element fuses, the Cooper Bussmann®dual-element, time-delay fuses can be sized closer to provide both

high performance short-circuit protection and reliable overload protection in circuits subject to temporary overloads and surge currents. For ac motor loads, a single-element

fuse may need to be sized at 300% of an a.c. motor current in order to hold the starting current. However, dual-element, time delay fuses can be sized much closer to motor

loads. For instance, it is generally possible to size Fusetron Dual-Element Fuses, FRS-R and FRN-R and Low-Peak®Dual-Element Fuses, LPS-RK_SP and LPN-RK_SP, at

125% and 130% of motor full load current, respectively. Generally, the Low-Peak Dual-Element Fuses, LPJ_SP, and CUBEFuse®, TCF, can be sized at 150% of motor full

load amps. This closer fuse sizing may provide many advantages such as: (1) smaller fuse and block, holder or disconnect amp rating and physical size, (2) lower cost due

to lower amp rated devices and possibly smaller required panel space, (3) better short-circuit protection – less short-circuit current let-through energy, and (4) potential

reduction in the arc-flash hazard.

Figure 6. This is the LPS-RK100SP, a 100A, 600V Low-Peak, Class RK1, Dual-Element Fuse that has excellent time-delay, excellent current-limitation and a 300,000A interrupting rating. Artistic

liberty is taken to illustrate the internal portion of this fuse. The real fuse has a non-transparent tube and special small granular, arc-quenching material completely filling the internal space.

Figure 7. The true dual-element fuse has distinct and separate overload element and short-

circuit element.

Shor t-circuit element

Overload element

Spring

Filler quenches the arcs

Small volume of metal to vaporize

Filler material

Insulated end-caps to help prevent

accidental contact with live par ts.

Figure 8. Overload operation: Under sustained overload conditions, the trigger spring

fractures the calibrated fusing alloy and releases the “connector”. The insets represent a model

of the overload element before and after. The calibrated fusing alloy connecting the short-circuit

element to the overload element fractures at a specific temperature due to a persistent overload

current. The coiled spring pushes the connector from the short-circuit element and the circuit is

interrupted.

Figure 9. Short-circuit operation: Modern fuses are designed with minimum metal in the

restricted portions which greatly enhance their ability to have excellent current-limiting

characteristics – minimizing the short circuit let-through current. A short-circuit current causes

the restricted portions of the short-circuit element to vaporize and arcing commences. The arcs

burn back the element at the points of the arcing. Longer arcs result, which assist in reducing the

current. Also, the special arc quenching filler material contributes to extinguishing the arcing

current. Modern fuses have many restricted portions, which results in many small arclets – all

working together to force the current to zero.

Figure 10. Short-circuit operation: The special small granular, arc-quenching material plays

an important part in the interruption process. The filler assists in quenching the arcs; the filler

material absorbs the thermal energy of the arcs, fuses together and creates an insulating barrier.

This process helps in forcing the current to zero. Modern current-limiting fuses, under short-

circuit conditions, can force the current to zero and complete the interruption within a few

thousandths of a second.

When the short-circuit current is in the current-limiting range of a fuse, it is not possible for the full available short-circuit current to flow through the fuse – it’s a matter of

physics. The small restricted portions of the short-circuit element quickly vaporize and the filler material assists in forcing the current to zero. The fuse is able to “limit” the

short-circuit current.

Overcurrent protection must be reliable and sure. Whether it is the first day of the electrical system or thirty or more years later, it is important that overcurrent protective

devices perform under overload or short-circuit conditions as intended. Modern current-limiting fuses operate by very simple, reliable principles.

Before

After

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

428

Application Guide

Fuse Technology

Fuse Time-Current Cur ves

When a low level overcurrent occurs, a long interval of time will

be required for a fuse to open (melt) and clear the fault. On the

other hand, if the overcurrent is large, the fuse will open very

quickly. The opening time is a function of the magnitude of the

level of overcurrent. Overcurrent levels and the corresponding

intervals of opening times are logarithmically plotted in graph

form as shown to the right. Levels of overcurrent are scaled on

the horizontal axis; time intervals on the vertical axis. The

curve is thus called a “time-current” curve.

This particular plot reflects the characteristics of a 200A, 250V,

Low-Peak®dual-element fuse. Note that at the 1,000A

overload level, the time interval which is required for the fuse

to open is 10 seconds. Yet, at approximately the 2,200A

overcurrent level, the opening (melt) time of a fuse is only 0.01

seconds. It is apparent that the time intervals become shorter

as the overcurrent levels become larger. This relationship is

termed an inverse time-to-current characteristic. Time-current

curves are published or are available on most commonly used

fuses showing “minimum melt,” “average melt” and/or “total

clear” characteristics. Although upstream and downstream

fuses are easily coordinated by adhering to simple amp ratios,

these time-current curves permit close or critical analysis of

coordination.

Better Motor Protection in Elevated Ambients

The derating of dual-element fuses based on increased

ambient temperatures closely parallels the derating curve of

motors in elevated ambient. This unique feature allows for

optimum protection of motors, even in high temperatures.

Affect of ambient temperature on operating characteristics of

Fusetron and Low-Peak dual-element fuses.

400

300

200

100

.08

.06

.04

.03

.02

.01

100

200

300

400

600

800

1,000

2,000

3,000

4,000

6,000

8,000

10,000

TIME IN SECONDS

CURRENT IN AMPS

LOW-PEAK

LPN-RK200 SP (RK1)

150

140

130

120

110

100

AMBIENT

PERCENT OF RATING OR

OPENING TIME

Affect on Carrying

Capacity Rating

Affect on

Opening Time

–76°F

(–60°C) –40°F

(–40°C) –4°F

(–20°C) –32°F

(0°C) 68°F

(20°C) 104°F

(40°C) 140°F

(60°C) 176°F

(80°C) 212°F

(100°C)

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Services &

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Guide

Application Guide

Fuse Technology

In the above illustration, a grooved ring in one ferrule provides

the rejection feature of the Class R fuse in contrast to the

lower interrupting rating, non-rejection type.

Branch-Circuit Listed Fuses

Branch-circuit listed fuses are designed to prevent the

installation of fuses that cannot provide a comparable level of

protection to equipment.

The characteristics of Branch-circuit fuses are:

1. They must have a minimum interrupting rating of 10kA

2. They must have a minimum voltage rating of 125V.

3. They must be size rejecting such that a fuse of a lower

voltage rating cannot be installed in the circuit.

4. They must be size rejecting such that a fuse with a current

rating higher than the fuse holder rating cannot be installed.

Better Protection Against Motor Single Phasing

When secondary single-phasing occurs, the current in the

remaining phases increases to approximately 200% rated full

load current. (Theoretically 173%, but change in efficiency and

power factor make it about 200%.) When primary single-

phasing occurs, unbalanced voltages occur on the motor circuit

causing currents to rise to 115%, and 230% of normal running

currents in delta-wye systems.

Dual-element fuses sized for motor running overload protection

will help to protect motors against the possible damages of

single-phasing.

Classes of Fuses

Safety is the industry mandate. However, proper selection,

overall functional performance and reliability of a product are

factors which are not within the basic scope of listing agency

activities. In order to develop its safety test procedures, listing

agencies develop basic performance and physical

specifications or standards for a product. In the case of fuses,

these standards have culminated in the establishment of

distinct classes of low-voltage (600V or less) fuses; Classes

RK1, RK5, G, L, T, J, H and CC being the more important.

The fact that a particular type of fuse has, for instance, a

classification of RK1, does not signify that it has the identical

function or performance characteristics as other RK1 fuses. In

fact, the Limitron®non-time-delay fuse and the Low-Peak

dual-element, time-delay fuse are both classified as RK1.

Substantial differences in these two RK1 fuses usually requires

considerable difference in sizing. Dimensional specifications of

each class of fuse does serve as a uniform standard.

Class R Fuses

Class R (“R” for rejection) fuses are high performance,1⁄10 to

600A units, 250V and 600V, having a high degree of current

limitation and a short-circuit interrupting rating of up to 300kA

(RMS Sym.). Cooper Bussmann®Class R fuses include Class

RK1 Low-Peak®and Limitron®fuses, and RK5 Fusetron fuses.

They have replaced the K1 Low-Peak and Limitron fuses and

K5 Fusetron fuses. These fuses are identical, with the

exception of a modification in the mounting configuration called

a “rejection feature.” This feature permits Class R fuses to be

mounted in rejection type fuseclips. “R” type fuseclips prevent

older type Class H, ONE-TIME and RENEWABLE fuses from

being installed. The use of Class R fuse holders is thus an

important safeguard. The application of Class R fuses in such

equipment as disconnect switches permits the equipment to

have a high interrupting rating. NEC®Articles 110-9 and

230-65 require that protective devices have adequate

capacity to interrupt short-circuit currents. Article 240-60(b)

requires fuse holders for current-limiting fuses to reject

non-current-limiting type fuses.

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430

Application Guide

Fuse Technology

Reliability and Maintenance of

Overcur rent Protective Devices

Modern fuses have several significant advantages over

mechanical overcurrent protective devices - one of those

advantages is reliability. Whether the first day of the electrical

system or years later, it is important that overcurrent protective

devices perform under overload and fault conditions as

intended.

Modern current-limiting fuses operate by very simple, reliable

principles. Fuses do not have to be maintained. By their

inherent design, fuses do not have elements or mechanisms

to calibrate, adjust or lubricate. If and when fuses are called

upon to open on an overcurrent, installing the same type and

ampere rated fuses provides the circuit with new factory-

calibrated protection. The original design integrity can be

maintained throughout the life of the electrical system. One

last point on fuse systems; the terminations, clips and

disconnects should be maintained as necessary.

In contrast, circuit breakers are mechanical devices, even

those with electronic sensing, and circuit breakers require

periodic maintenance, testing, and if necessary reconditioning

or replacement. This is required per the circuit breaker

manufacturers' instructions, NFPA 70B Recommended

Practice for Electrical Equipment Maintenance, and NEMA

AB4. If circuit breakers are not properly maintained, the

interrupting rating, circuit component protection, coordination,

and electrical safety may be compromised.

See www.cooperbussmann.com for more information on

Reliability and Maintenance.

Supplementar y Overcurrent Protective

Devices for use in Motor Control

Circuits

Branch Circuit vs. Supplemental Overcurrent

Protective Devices

Branch circuit overcurrent protective devices (OCPD) can be

used everywhere OCPD are used, from protection of motors

and motor circuits and group motor circuits, to protection of

distribution and utilization equipment. Supplemental OCPD

can only be used where proper protection is already being

provided by a branch circuit device, by exception [i.e.,

430.72(A)], or if protection is not required. Supplemental

OCPD can often be used to protect motor control circuits but

they cannot be used to protect motors or motor circuits. A very

common misapplication is the use of a supplementary

overcurrent protective device such as a UL 1077 mechanical

overcurrent device for motor branch circuit short-circuit and

ground fault protection. Supplementary OCPDs are incomplete

in testing compared to devices that are evaluated for branch

circuit protection. THIS IS A SERIOUS MISAPPLICATION

AND SAFETY CONCERN!! Caution should be taken to assure

that the proper overcurrent protective device is being used for

the application at hand. Below is a description of popular

supplementary overcurrent protective devices.

Most supplemental overcurrent protective devices have very

low interrupting ratings. Just as any other overcurrent

protective device, supplemental OCPDs must have an

interrupting rating equal to or greater than the available

short-circuit current.

Supplemental fuses as listed or recognized to the

UL/CSA/ANCE Trinational 248-14 Standard

These are fuses that can have many voltages and interrupting

ratings within the same case size. Examples of supplemental

fuses are 13⁄32'' X 1 1⁄2'', 5 x 20mm, and 1⁄4'' x 1 1⁄4'' fuses.

Interrupting ratings range from 35 to 100,000 amps.

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Guide

Application Guide

Motor Circuit Branch Circuit Protection

Motor Circuits – Choice of Overcurrent Protection

Motor circuits have unique characteristics and several

functions, such as short-circuit protection, overload protection

and automatic/ remote start/stop, that may be required.

Sometimes the comment is made that users prefer circuit

breakers because they can be reset. Let’s examine the choice

of either circuit breakers or current- limiting fuses for motor

branch circuit protection.

In the case to be examined, fuses and circuit breakers

(includes magnetic only circuit breakers which are called

MCPs or motor circuit protectors) are sized with the intent to

provide only short-circuit and ground fault protection for the

motor branch circuit protection per 430.52. Other means, such

as overload relays, provide the motor overload protection.

Typical thermal magnetic circuit breakers can only be sized for

motor branch circuit protection (typically 200% - 250% of

motor current) because if they are sized closer, the motor

starting current trips the circuit breaker’s instantaneous

mechanism. Magnetic only circuit breakers (MCPs) are

intentionally not provided with overload capability; they only

operate on short-circuit currents. There are some fuses such

as the FRS-R and LPS-RK fuses that can be sized close

enough for motor running overload protection or backup motor

running protection. But for the discussion in this section,

assume current-limiting fuses are sized only for motor

short-circuit and ground fault protection.

It is important to note that in this protection level being

discussed, a circuit breaker or fuses should only open if there

is a fault on the motor circuit. A separate overload protective

device, such as an overload relays, provides motor overload

protection per 430.32. Here are some important

considerations:

1. OSHA regulation 1910.334(b)(2) Use of Equipment states:

Reclosing circuits after protective device operation. After a circuit is

deenergized by a circuit protective device, the circuit may not be

manually reenergized until it has been determined that the equipment

and circuit can be safely energized. The repetitive manual reclosing of

circuit breakers or reenergizing circuits through replaced fuses is

prohibited. NOTE: When it can be determined from the design of the

circuit and the over-current devices involved that the automatic

operation of a device was caused by an overload rather than a fault

condition, no examination of the circuit or connected equipment is

needed before the circuit is reenergized.

So the speed of reclosing a circuit breaker after a fault is not an

advantage. The law requires that if the condition is a fault (that is the

only reason the circuit breaker or fuses should open on a motor circuit),

then the fault must be corrected prior to replacing fuses or resetting the

circuit breaker.

2. The typical level of short-circuit protection for the motor starter provided

by circuit breakers and MCPs is referred to as Type 1. This is because

most circuit breakers are not current-limiting. So, for a loadside fault,

the starter may sustain significant damage such as severe welding of

contacts and rupturing of the heater elements. Or the heater/overload

relay system may lose calibration. This is an acceptable level of

performance per UL 508, which is the product standard for motor

starters. Current-limiting fuses can be selected that can provide Type 2

“No Damage” short-circuit protection for motor starters.

Consequently, with circuit breaker protection, after a fault condition,

significant downtime and cost may be incurred in repairing or replacing

the starter. With properly selected fuses for Type 2 protection, after the

fault is repaired, only new fuses need to be inserted in the circuit; the

starter does not have to be repaired or replaced.

3. Circuit breakers must be periodically tested to verify they mechanical

operate and electrically tested to verify they still are properly calibrated

within specification. The circuit breaker manufacturers recommend this.

Typically circuit breakers should be mechanically operated at least every

year and electrically tested every 1 to 5 years, depending on the service

conditions. Modern current-limiting fuses do not have to be maintained

or electrically tested to verify they still will operate as intended. The

terminations of both circuit breakers and fusible devices need to be

periodically checked and maintained to prevent thermal damage. Plus

fuse clips should be periodically inspected and if necessary maintained.

4. After a circuit breaker interrupts a fault, it may not be suitable for further

service. UL 489, the product standard for molded case circuit breakers,

only requires a circuit breaker to interrupt two short-circuit currents at

its interrupting rating. Circuit breakers that are rated 100 amps or less

do not have to operate after only one short-circuit operation under “bus

bar” short-circuit conditions. If the fault current is high, circuit breaker

manufacturers recommend that a circuit breaker should receive a

thorough inspection with replacement, if necessary. How does one know

a circuit breaker’s service history or what level of fault current that a

circuit breaker interrupts? With modern current-limiting fuses, if the fuse

interrupts a fault, new factory calibrated fuses are installed in the circuit.

The original level of superior short-circuit protection can be there for the

life of the motor circuit.

5. After a fault, the electrician has to walk back to the storeroom to get new

fuses; that is if spare fuses are not stored adjacent to the equipment.

This does require some additional down time. However, if fuses opened

under fault conditions, there is a fault condition that must be remedied.

The electrician probably will be going back to the storeroom anyway for

parts to repair the fault. If properly selected current-limiting fuses are

used in the original circuit, the starter will not sustain any significant

damage or loss of overload calibration.

With circuit breaker protection on motor circuits, after a fault

condition, it may be necessary to repair or replace the starter,

so a trip to the storeroom may be necessary. And if the starter

is not significantly damaged, it may still need to be tested to

insure the let-through energy by the circuit breaker has not

caused the loss of starter overload calibration. Also, the circuit

breaker needs to be evaluated for suitability before placing it

back into service. Who is qualified for that evaluation? How

much time will that take?

In summary, resettability is not an important feature for motor

branch circuit (short-circuit) protection and resettability of the

branch circuit protective device is not a benefit for motor

circuits. As a matter of fact, resettability of the motor branch

circuit overcurrent protective device may encourage an unsafe

practice. The function of motor branch circuit protection is fault

protection: short-circuit and ground fault protection. Faults do

not occur on a regular basis. But when a fault does occur, it is

important to have the very best protection. The best motor

branch circuit protection can be judged by (1) reliability - its

ability to retain its calibration and speed of operation over its

lifetime, (2) current-limiting protection - its ability to provide

Type 2 “No Damage” protection to the motor starter, and (3)

safety - its ability to meet a facility’s safety needs. Modern

current-limiting fuses are superior to circuit breakers for motor

branch circuit protection.

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432

Application Guide

Glossary

Ampere (Amp)

The measurement of intensity of rate of

flow of electrons in an electric circuit. An

ampere (amp) is the amount of current

that will flow through a resistance of one

ohm under a pressure of one volt.

Ampere is often abbreviated as “A”.

Amp Rating

The current-carrying capacity of a fuse.

When a fuse is subjected to a current

above its amp rating, it will open the

circuit after a predetermined period of

time.

Amp Squared Seconds, l2t

The measure of heat energy developed

within a circuit during the fuse’s

clearing. It can be expressed as

“melting l2t”, “arcing l2t” or the sum of

them as “Clearing l2t”. “l” stands for

effective let-through current (RMS),

which is squared, and “t” stands for time

of opening, in seconds.

Arcing I2t

Value of the I2t during the arcing time

under specified conditions.

Arcing Time

The amount of time from the instant

the fuse link has melted until the

overcurrent is interrupted, or cleared.

Breaking Capacity

(See Interrupting Rating)

Car tridge Fuse

A fuse consisting of a current

responsive element inside a fuse tube

with terminals on both ends.

Class CC Fuses

600V, 200kA interrupting rating, branch

circuit fuses with overall dimensions of

13⁄32” x 11⁄2”. Their design incorporates a

rejection feature that allows them to be

inserted into rejection fuse holders and

fuse blocks that reject all lower voltage,

lower interrupting rating 13⁄32” x 11⁄2” fuses.

They are available from 1⁄10A through

30A.

Class G Fuses

480V, 100kA interrupting rating branch

circuit fuses that are size rejecting to

eliminate overfusing. The fuse diameter

is 13⁄32” while the length varies from 15⁄16”

to 21⁄4”. These are available in ratings

from 1A through 60A.

Class H Fuses

250V and 600V, 10kA interrupting rating

branch circuit fuses that may be

renewable or non-renewable. These are

available in amp ratings of 1A through

600A.

Class J Fuses

These fuses are rated to interrupt a

minimum of 200kA AC. They are labeled

as “Current-Limiting”, are rated for

600Vac, and are not interchangeable

with other classes.

Class K Fuses

These are fuses listed as K-1, K-5, or

K-9 fuses. Each subclass has

designated I2t and lp maximums. These

are dimensionally the same as Class H

fuses, and they can have interrupting

ratings of 50k, 100k, or 200kA. These

fuses are current-limiting. However, they

are not marked “current-limiting” on their

label since they do not have a rejection

feature.

Class L Fuses

These fuses are rated for 601 through

6000A, and are rated to interrupt a

minimum of 200kA AC. They are labeled

“Current-Limiting” and are rated for

600Vac. They are intended to be bolted

into their mountings and are not

normally used in clips. Some Class L

fuses have designed in time-delay

features for all purpose use.

Class R Fuses

These are high performance fuses rated

1⁄10-600A in 250V and 600V ratings. All

are marked “Current Limiting” on their

label and all have a minimum of 200kA

interrupting rating. They have identical

outline dimensions with the Class H

fuses but have a rejection feature which

prevents the user from mounting a fuse

of lesser capabilities (lower interrupting

capacity) when used with special Class

R Clips. Class R fuses will fit into either

rejection or non-rejection clips.

Class T Fuses

An industry class of fuses in 300V and

600V ratings from 1A through 1200A.

They are physically very small and can

be applied where space is at a

premium. They are fast acting fuses

with an interrupting rating of 200kA

RMS.

Classes of Fuses

The industry has developed basic

physical specifications and electrical

performance requirements for fuses with

voltage ratings of 600V or less. These

are known as standards. If a type of

fuse meets the requirements of a

standard, it can fall into that class.

Typical classes are K, RK1, RK5, G, L,

H, T, CC, and J.

Clearing Time

The total time between the beginning of

the overcurrent and the final opening of

the circuit at rated voltage by an

overcurrent protective device. Clearing

time is the total of the melting time and

the arcing time.

Current Limitation

A fuse operation relating to short circuits

only. When a fuse operates in its

current-limiting range, it will clear a short

circuit in less than 1⁄2cycle. Also, it will

limit the instantaneous peak let-through

current to a value substantially less than

that obtainable in the same circuit if that

fuse were replaced with a solid

conductor of equal impedance.

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Application Guide

Glossary

Dual Element Fuse

Fuse with a special design that utilizes

two individual elements in series inside

the fuse tube. One element, the spring

actuated trigger assembly, operates on

overloads up to 5-6 times the fuse

current rating. The other element, the

short circuit section, operates on short

circuits up to their interrupting rating.

Electrical Load

That part of the electrical system which

actually uses the energy or does the

work required.

Fast-Acting Fuse

A fuse which opens on overload and

short circuits very quickly. This type of

fuse is not designed to withstand

temporary overload currents associated

with some electrical loads.

Fuse

An overcurrent protective device with a

fusible link that operates and opens the

circuit on an overcurrent condition.

High Speed Fuses

Fuses with no intentional time-delay in

the overload range and designed to

open as quickly as possible in the

short-circuit range. These fuses are

often used to protect solid-state devices.

Inductive Load

An electrical load which pulls a large

amount of current—an inrush current—

when first energized. After a few cycles

or seconds the current “settles down” to

the full-load running current.

Interr upting Capacity

(See Interrupting Rating)

Interr upting Rating — IR

(Breaking Capacity)

The rating which defines a fuse’s ability

safely

interrupt and clear short

circuits. This rating is much greater than

the ampere rating of a fuse. The NEC®

defines Interrupting Rating as “The

highest current at rated voltage that an

overcurrent protective device is intend-

ed to interrupt under standard test

conditions.”

Melting I2t

Value of the I2t during the melting time

of the fuse link under specified

conditions.

Melting Time

The amount of time required to melt the

fuse link during a specified overcurrent.

(See Arcing Time and Clearing Time.)

“NEC®” Dimensions

These are dimensions once referenced

in the National Electrical Code. They are

common to Class H and K fuses and

provide interchangeability between

manufacturers for fuses and fusible

equipment of given ampere and

voltage ratings.

Ohm

The unit of measure for electric

resistance. An ohm is the amount of

resistance that will allow one ampere to

flow under a pressure of one volt.

Ohm’s Law

The relationship between voltage,

current, and resistance, expressed by

the equation E = IR, where E is the

voltage in volts, I is the current in amps,

and R is the resistance in ohms.

One Time Fuses

Generic term used to describe a Class

H non-renewable cartridge fuse, with a

single element.

Overcurrent

A condition which exists on an electrical

circuit when the normal load current is

exceeded. Overcurrents take on two

separate characteristics—overloads and

short circuits.

Overload

Can be classified as an overcurrent

which exceeds the normal full load

current of a circuit. Also characteristic of

this type of overcurrent is that it does

not leave the normal current carrying

path of the circuit—that is, it flows from

the source, through the conductors,

through the load, back through the

conductors, to the source again.

Peak Let-Through Current, lp

The instantaneous value of peak current

let-through by a current-limiting fuse,

when it operates in its current-limiting

range.

Renewable Fuse (600V & below)

A fuse in which the element, typically a

zinc link, may be replaced after the fuse

has opened, and then reused. Renewable

fuses are made to Class H standards.

Resistive Load

An electrical load which is characteristic of

not having any significant inrush current.

When a resistive load is energized, the

current rises instantly to its steady-state

value, without first rising to a higher value.

RMS Current

The RMS (root-mean-square) value of

any periodic current is equal to the value

of the direct current which, flowing through

a resistance, produces the same heating

effect in the resistance as the periodic

current does.

SCCR

See Short-Circuit Current Rating

Semiconductor Fuses

Fuses used to protect solid-state devices.

See “High Speed Fuses.”

Short-Circuit

Can be classified as an overcurrent which

exceeds the normal full load current of a

circuit by a factor many times (tens,

hundreds or thousands greater). Also

characteristic of this type of overcurrent is

that it leaves the normal current carrying

path of the circuit—it takes a “short cut”

around the load and back to the source.

Shor t-Circuit Current Rating (SCCR)

The maximum short-circuit current an

electrical component can sustain without

the occurrence of excessive damage

when protected with an overcurrent

protective device.

Shor t-Circuit Withstand Rating

Same definition as short-circuit rating.

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434

Application Guide

Glossary

Single-Phasing

That condition which occurs when one-

phase of a three-phase system opens,

either in a low voltage (secondary) or

high voltage (primary) distribution

system. Primary or secondary single-

phasing can be caused by any number

of events. This condition results in

unbalanced currents in polyphase

motors and unless protective measures

are taken, causes overheating and

failure.

Threshold Current

The symmetrical RMS available current

at the threshold of the current-limiting

range, where the fuse becomes

current-limiting when tested to the

industry standard. This value can be

read off of a peak let-through chart

where the fuse curve intersects the A-B

line. A threshold ratio is the relationship

of the threshold current to the fuse’s

continuous current rating.

Time-Delay Fuse

A fuse with a built-in delay that allows

temporary and harmless inrush currents

to pass without opening, but is so

designed to open on sustained

overloads and short circuits.

Total Clearing I2t

Total measure of heat energy developed

within a circuit during the fuse’s clearing

of a fault current. Total Clearing I2t is the

sum of the melting I2t and arcing I2t.

Voltage Rating

The maximum open circuit voltage in

which a fuse can be used, yet safely

interrupt an overcurrent. Exceeding the

voltage rating of a fuse impairs its ability

to clear an overload or short circuit

safely.

Withstand Rating

The maximum current that an

unprotected electrical component can

sustain for a specified period of time

without the occurrence of extensive

damage.

Cooper

Bussmann # Upgrade # Description Data Sheet #

AGC-(AMP) ABC-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE 2001

AGC-V-(AMP) ABC-V-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE WITH LEADS 2001

AGU-(AMP) LP-CC-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE 2008

BAF-(AMP) LP-CC-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE 2011

BAN-(AMP) LP-CC-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE 2046

FNM-(AMP) LP-CC-(AMP) TIME-DELAY,

⁄

”X 1

⁄

” FUSE 2028

FNQ-R-(AMP) LP-CC-(AMP)* TIME-DELAY, 500V,

⁄

”X 1

⁄

” FUSE 1012

FNR-R-(AMP) LPN-RK-(AMP)SP TIME-DELAY,250V, CLASS RK5 FUSES 1019/1020

FRS-R-(AMP) LPS-RK-(AMP)SP TIME-DELAY, 600V, CLASS RK5 FUSES 1017/1018

JKS-(AMP) LPJ-(AMP)SP FAST-ACTING, 600V, CLASS J FUSE 1026/1027

KLU-(AMP) KRP-C-(AMP)SP TIME-DELAY,CLASS L FUSE 1013

KTK-(AMP) KTK-R-(AMP) FAST-ACTING, 600V,

⁄

”X 1

⁄

” FUSE 1011

KTK-R-(AMP) LP-CC-(AMP) FAST-ACTING, 600V, CLASS CC FUSE 1015

KTN-R-(AMP) LPN-RK-(AMP)SP FAST-ACTING,250V,CLASS RK1 FUSE 1043

KTS-R-(AMP) LPS-RK-(AMP)SP FAST-ACTING, 600V, CLASS RK1 FUSE 1044

KTU-(AMP) KPR-C-(AMP)SP FAST-ACTING, 600V, CLASS L FUSE 1010

MDL-(AMP) MDA-(AMP) TIME-DELAY,

⁄

”X 1

⁄

” FUSE 2004

MDL-V-(AMP) MDA-V-(AMP) TIME-DELAY,

⁄

”X 1

⁄

” FUSE WITH LEADS 2004

MTH-(AMP) ABC-(AMP) FAST-ACTING,

⁄

”X 1

⁄

” FUSE

NON-(AMP) LPN-RK-(AMP)SP GENERAL PURPOSE, 250V, CLASS H FUSES 1030

NOS-(AMP) LPS-RK-(AMP)SP GENERAL PURPOSE, 600V, CLASS H FUSES 1030

REN-(AMP) LPN-RK-(AMP)SP 250V RENEWABLE FUSELINK 1028

RES-(AMP) LPS-RK-(AMP)SP 600V RENEWABLE FUSELINK 1028

SL-(AMP) S-(AMP) TIME-DELAY, 125V, PLUG FUSE 1033

TL-(AMP) T-(AMP) TIME-DELAY, 125V, PLUG FUSE 1035

W-(AMP) TL-(AMP) TIME-DELAY,125V, PLUG FUSE 1035

Out-of-Stock

Substitution/Upgrades

*Not recommended for control transformer circuits.

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Guide

Application Guide

435

Industrial Fuse Applications

78910 11 12 13

Industrial Applications

1. Interior Lighting

2. Computer Power

3. Switchboards

4. Motor Control Center

5. Emergency Lighting

6. UPS Backup Power Supplies

7. Transformer/Emergency Generator

8. Forklift Battery Charging Station

9. HVAC Chillers/Blowers

10. Welding Circuits

11. Plant Lighting

12. Distribution Panels

13. Disconnect Switches

14. Programmable Logic Circuits

15. Conveyor System

8910 11

Commercial Applications

1. Interior Lighting

2. HVAC Blowers

3. Computer Power

4. Branch Circuits

5. Emergency Lighting

6. Load Centers

7. Disconnect/Distribution Panels

8. HVAC/Chillers

9. Switchboards/Motor Control Centers

10. UPS Backup Power Supplies

11. Elevator Control Centers

12. Transformer/Emergency Generator

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

436

Index

436

Catalog Number Index

1025 *

11 Type 400

11239 275

11240 275

11241 275

11242 275

11675- 299

11725- 299

11960 *

13195 *

13926 *

14002- 301

14004- 301

15087 398

15100 394

15149 329

15188- 308

15200 394

15242 *

15288- 308

15506 *

15515 *

15595 *

15600 *

15602 *

15660 *

15800 392

15900 *

15968 *

160___ 299, 300

162___ 299, 300

162__-_UL *

163__ 297-298, 299-300

163__-_UL *

164___ *

165___ 299, 300

1683A75H08 *

170E_ _ _ _ 173-177, 180-184

170F_ _ _ _ 178-179

170H_ _ _ _ 185-186

170L *

170M_ _ _ _ 117-172

170N *

170R *

170T *

171A *

17415 *

175GDMSJD *

175GXQNJD *

1768A40H *

19315 *

19320 *

1976 *

1A0065 91

1A0835 *

1A1119- 68

1A1120- 68

1A1310 *

1A1360 *

1A1478 *

1A1837 *

1A1838 *

1A1853 *

1A1907- 68

1A2294 *

1A2650 *

1A3398- 68

1A3399- 67

1A3400- 69

1A3746 *

1A4533- 68

1A4534- 68

1A4544 *

1A4708 *

1A4806 *

1A5018- 67

1A5041 *

1A5220 *

1A5600- 69

1A5601- 67

1A5602- 67

1A5603 *

1A5778 69

1A5779 69

1A5780 69

1A5940 *

1A6004 *

1A6049 *

1A8654 *

1A9619 *

1B0021 *

1B0048 *

1B0049 *

1B0089 271

1BR021 *

1BR048 *

1BS1_ _ _ 113, 186

1CIF *

2004 *

2081 *

20BS 235

20LSC 235

21010 *

21040 *

21050 *

21065 *

21100 *

21200 *

2127 *

2177 *

2178 *

2201 *

2245 *

2322 *

24 Type 400

2429 *

2430 *

2432 *

246B9949BG *

2487 *

2494 *

2499 288

25499 *

2601 *

2602 *

2604 *

2605 *

2607 *

2608 *

2610 *

2611 *

2650 *

2654 *

2698 *

270303 91

2714 *

2772 *

2778 *

2795 *

2833 *

2834 *

2837 *

2838 *

2839 *

2860 *

2960 *

2989 *

2992 *

2A066 *

2A1279 295

2A8 *

30LSC 235

323A2433P6 *

32BS 235

3356 *

3373 *

3375 *

3411 *

3429 *

3434 *

3512 *

3513 *

3515 *

3519 *

3520 *

3521 *

3525 *

3528 *

3531 *

353837 *

3544 *

3545 *

3552 *

3553 *

3554 *

3555 *

3556 *

3562 *

3569 *

3571 *

3572 *

3575 *

3576 *

3578 *

3580 *

3591 *

3594 *

3595 *

3604 *

3723 290

3742 290

3743 290

3794 *

3823 *

3828 289

3833 *

3835 290

3839 *

3959 *

3998 *

39E *

4070 *

4121 *

4164 52

4178 *

4180 *

4202 *

4207 *

4261 *

4287 *

4386 *

4393 289

4399 *

4402 *

4405 288

4406 288

4407 *

4408 *

4410 *

4411 *

4412 *

4413 *

4415 *

4421 290

4422 *

4423 *

4427 *

4428 *

4467 *

4482 *

4483 *

4512 *

4513 *

4514 *

4515 290

4520 289

4522 *

4525 *

4528 *

4529 *

4530 *

4532 *

4534 *

4535 *

4537 *

4561 *

4567 *

4574 288

4586 *

4648 *

4909 *

510 *

51215 *

51235 *

558730 *

5591- 70

5592- 70

5623 *

5672- 70

5674- 70

5678 *

5681- 70

5682- 70

5950 *

5956- 70

5958 *

5960- 70

5961 *

5TPH 414

60/100BS 235

60/100LSC 235

6125 *

6125TD *

6374 *

63A-DUMMY *

64 _ _ _ 46

6415 *

6417 *

6418 *

6419 *

6420 *

64200 *

6422 *

6424 *

6427 *

64913 *

64926 *

6525-25-0341 *

65372 *

65398 *

6725 *

675 *

68_ _ _ 46

68100 *

7 Type 400

70 Series 398

70- 398

71-0192 *

72 *

74 Type 400

75 Type 401

76 Type 401

80 Type 401

80910 *

81 Type 401

82048 *

8414677 *

84345 *

8456A85H *

847966108 *

8583A36H *

8588A81H *

88914568 *

9078A67G04 91

9435 *

9483 *

9732 *

9789 *

9834 *

9835 *

Catalog Page

Number Catalog Page

Number

* Not listed in this catalog. Call Cooper Bussmann Customer Satisfaction for more information. Call 636-527-3877.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 437

Services &

Application

Guide

Index

437

Catalog Number Index

9838 *

9841 *

9843 *

A3354705 *

A3354710 91

A3354720 *

A3354730 91

A3354745 91

A404302 *

AAO 225

ABC 63

ABCNA 85

ABC-V 63

ABFNA 85

ABGNA 85

ABS *

ABU *

ABWNA 79, 85

AC 226

ACB *

ACF *

ACH *

ACK *

ACL *

ACO *

AD 226

ADL *

ADLSJ 81

ADMNA 79

ADOSJ 84

AF *

AFS *

AFX *

AGA 62

AGA-V 62

AGC 63

AGC-V 63

AGS *

AGU *

AGW 62

AGX 62

AGX-V *

AGY *

AL-D 258

ALS *

ALW *

AMG *

AMI *

AMWNA 79, 85

ANL 52

ANN 52

ASZ350B3 *

AT *

ATC 55

ATC-_ID 55

ATC-FHID 55

ATF *

ATM 55

ATM-_ID 55

ATM-FHID 55

B221 247

B222 247

B40 *

B48 *

B83 *

B84 *

B93 *

BAF 47

BAN *

BAO 225

BBS 50

BBU 89-90

BBU-EFID *

BC (fuse blocks) 274

BC (fuses) 226

BCA603 273

BCBC 245-246

BCBD 245-246

BCBS 245-246

BCC *

BCCM 274

BCF *

BD (fuses) 226

BD (switches) 244

BDF *

BDFLNF100 369-370

BDFLNF175 369

BDFLNF200 369-370

BDFLNF30 369-370

BDFLNF400 369

BDFLNF60 369-370

BDFLNF600 369

BDNF1200 367-368

BDNF1600 367-368

BDNF2000 367-368

BDNF3150 367-368

BDNF600 365-366

BDNF800 365-366

BFW *

BG 274

BGH *

BH- _ _ _ _ 113, 225, 275

BH-_ xxx 113, 186

BM 274

BMA603 273

BNQ21-WH 311

BP655 *

BQE 311

BQQ41-WH 311

BRT *

BRW *

C08G 232

C08M 233

C08NL 258

C10G 232

C10M 233

C10NL *

C14G 232

C14G_S 234

C14M 233

C14M_S 234

C14NL 258

C19 *

C22G 232

C22G_S 234

C22M 233

C22M_S 234

C22NL 258

C2617 *

C2791 *

C2909 *

C30BS 235

C30F 235

C30FBS 235

C4044 *

C4534 *

C4559 *

C515 58

C517 58

C518 58

C519 58

C520 58

C5237 *

C5268- 113

C5898 *

C60BS 235

C60F 235

C60FBS 235

C6344 *

C7018 *

C7019 *

C7020 *

C7021- 403

C7024- 404

CAV 79, 85

CAVH 79, 85

CB203107S2105 *

CB3 *

CB5 *

CBB *

CBC *

CBF *

CBP *

CBPUB-ES-ED1H 421

CBPUB-ES-ED2H 421

CBPUB-ES-ED30H 421

CBPUB-ES-ED31H 421

CBPUB-ES-ED32H 421

CBPUB-ES-ED33H 421

CBPUB-ES-ED34H 421

CBPUB-ES-ED35H 421

CBPUB-ES-ED36H 421

CBPUB-ES-ED3H 421

CBS *

CBSV-ES-ED1 421

CBSV-ES-ED3 421

CBSV-ES-ED4 421

CBSV-ES-ED5 421

CBSV-ES-ED6 421

CBSV-ES-EN1 418

CBSV-ES-EN2 418

CBSV-ES-EN3 418

CBSV-ES-EN4 418

CBSV-ES-EN5 418

CBSV-ES-EN6 418

CBSV-ES-EN7 418

CBSV-ES-EN8 418

CBSV-ES-TEHP 422

CBSV-ES-TELP 422

CBSV-ES-TEMP 422

CBSV-SC-EN8 419-420

CBT *

CBTR-ES-1DA 421

CBTR-ES-1HP 421

CBTR-ES-2HP 421

CBTR-SC-1HP 421

CBTR-SC-2HP 421

CBU *

CCB *

CCC *

CCE *

CCG *

CCP- 326-329

CCSK-45 410

CD 226

CD1 *

CD100 *

CD27 *

CD33 *

CDB *

CDC *

CDN (fuses) 219

CDNF100 352-355, 356-358, 371

CDNF16 352-355, 356-358

CDNF160 359-360, 371

CDNF200 361-362, 371

CDNF25 352-355, 356-358

CDNF30

352-355, 356-358, 371

CDNF32 352-355, 356-358

CDNF400 363-364

CDNF45 352-355, 356-358

CDNF60

352-355, 356-358, 371

CDNF63 352-355, 356-358

CDS 219

CDS6 *

CDS8 *

CDS9 *

CDSS 338

CEO 225

CFD100 334-336, 344-346

CFD200 337-339, 346

CFD30 331-333, 344-346

CFD60 334-336, 344-346

CFD600 346

CFD800 346

CFZ *

CGL 220

CH30J_ 254

CH30J_I 254

CH60J_ 254

CH60J_I 254

CH08 258

CH10 *

CH10CL *

CH10CM *

CH14 258

CH14-HP 258

CH14MS-_D 258

CH22 258

CH810-HP 258

CHCC 257

CHM 257

CH-PLC 258

CHPV 257

CIF 221

CIH 223

CIK 223

CIL 223

CJ 222

CL1 195

CM__CF 235

CM__F 225

CM__FC 225

CP14002 *

CPB16 _ 296, 299-300

CPDB- 296-297, 299-300

CPS-C *

CT 191-192

CUG *

_D125 227

_D16 227

_D27 227

_D33 227

DCM 47

DD 226

DEO 225

DFC *

DFJ 97

DIA *

DLN-R 34

DLS-R 34

DRA-1 413

DRA-2 413

DRLC-A *

E-6188 *

EBI055- *

EC-_ _ _ 195

ECF *

ECL055- 76

ECL155- 77

ED 226

EDA 40

EDN 40

EET 191-193

EF 226

EFC30 378-380

EFC60 378, 380

EFF *

EFH *

EFJ100 378-380

EFJ200 378-380

EFJ30 378-380

EFJ400 378-380

EFJ60 378-380

EFJ600 378-380

EFJ800 378-380

EFL800 379-380

EFS 226

EK *

ELN *

EN6 *

ENA *

ENF100 381-383

ENF1200 381-383

ENF125 381-383

ENF16 381-383

ENF1600 381-383

ENF200 381-383

ENF2000 381-383

ENF25 381-383

Catalog Page

Number Catalog Page

Number

* Not listed in this catalog. Call Cooper Bussmann Customer Satisfaction for more information. Call 636-527-3877.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

438

Index

438

ENF30 381-383

ENF3150 381-383

ENF32 381-383

ENF400 381-383

ENF45 381-383

ENF60 381-383

ENF600 381-383

ENF63 381-383

ENF800 381-383

ENN *

EP *

ERK-28 411

ERS2 *

ERS30 *

ESD 225

ET 191-192

ETF *

EVF *

F01A *

F02A *

F02B *

F03A *

F03B *

F06A *

F07A *

F09A *

F09B *

F10A *

F15A *

F15B *

F16A *

F16B *

F19B *

F29A *

F38 402

F380 *

F60C *

F61C *

F62C *

F63C *

F64C *

F65C *

F7036- *

FA02 *

FA2A *

FA4H *

FBI 66

FBM 66

FBP *

FC *

FCB *

FCC *

FCU *

FD200 344

FD400 340-344

FD600 340-343, 346

FD800 340-343, 346

FDM *

FE 191-192, 194

FE2475- *

FEE 191-192, 194

FEH *

FF 226

FG 226

FH2 *

FHL *

FHN *

FL- *

FL11H_ 88

FL11K__ 88

FL11N *

FL11T__ 88

FL12K__ 88

FL1A5 *

FL3H *

FL3K__ 88

FL3T__ 88

FLB *

FLD *

FLF *

FLM *

FLN *

FLS *

FM 191-192, 194

FM01A *

FM08A *

FM09A *

FM09B *

FMM 191-192, 194

FMX *

FNA 51

FNJ *

FNM 49

FNQ 49

FNQ-R 18

FNW *

FP-_ 414

FR-1000 *

FRN-R 35

FRN-R-__ID 35

FRS-R 36

FRS-R-__ID 36

FSD *

FT-_ 414

FTI *

FTM *

FWA 98-101, 197-198

FWC 205-206

FWH 104-105, 201-204

FWJ 111-112, 213-214

FWK 211-212

FWL 215

FWP 207-210

FWS 215

FWX 102-103, 199-200

G30060 274

GBA 51

GBB 63

GBB-V 63

GBC *

GDA 59

GDA-V 59

GDB 59

GDB-V 59

GDC 60

GDC-V 60

GF 226

GFA *

GG 226

GH 226

GKB *

GKJ *

GLD 51

GLH *

GLN *

GLP 235

GLQ 53

GLR 54

GLX *

GMA 61

GMA-V 61

GMC 61

GMC-V 61

GMD 61

GMD-V 61

GMF 54

GMQ 53

GMT- 399

GMT-A 399

GMW *

GOB *

GRF 54

GSK-260 410

H07C 224

H25_ 260-262

H60_ 263-265

HAC-R *

HAS-R *

HBC *

HBH-I 66

HBH-M 66

HBM *

HBO *

HBP- *

HBS- *

HBV-I 66

HBV-M 66

HBW-I 66

HBW-M 66

HC- *

HC1 *

HC2 *

HC3 *

HC7 *

HC8 *

HCM *

HEB 279-280

HEC 279

HEF *

HEG 279

HEH 279

HEJ 279

HET 279

HEX 279

HEY 279

HFA 278

HFB 277

HGA *

HGB *

HGC *

HHB 277

HHC 56

HHD 56

HHF 56

HHG 56

HHI 278

HHJ 278

HHL 56

HHM 56

HHT 278

HHX 56

HIF *

HJL 285

HJM *

HKA *

HKL 285

HKP 282

HKQ *

HKR 285

HKT 285

HKU 285

HKX 285

HLA *

HLD 285

HLQ 53

HLR 54

HLS 399

HLT 399

HME 278

HMF 278

HMG 278

HMH 278

HMI 278

HMJ 278

HMK *

HMR *

HN-1 *

HN-3 *

HN-5 *

HOB *

HOF *

HPC-D 287

HPD 286

HPF 286

HPG 286

HPL *

HPM 287

HPS 286

HPS2 287

HRE 278

HRF 278

HRG 278

HRH 278

HRI 278

HRJ 278

HRK 277

HSK *

HTB- 283-284

HTC-10M *

HTC-140M 67

HTC-15M 67

HTC-200M 67

HTC-210M 67

HTC-30M *

HTC-35M 281

HTC-40M 281

HTC-45M 65

HTC-50M 65

HTC-55M 281

HTC-60M 65

HTC-65M 65

HTC-70M 281

HVA 87

HVB 87

HVJ 87

HVL 87

HVR 87

HVT 87

HVU 87

HVW 87

HVX 87

HWA *

IXL70F *

J-_ _ 415

J101/J *

J201/J *

J301/J *

J60__ 266-267

J70032 216

J70100 216

JA600 268

JB1 *

JB3 *

JCA *

JCD- 78

JCE- *

JCG- 80, 82

JCH- 80-81

JCI- 78

JCK- 80-81

JCK-A- 80-81

JCK-B- 80-81

JCL- 80-81

JCL-A- 80, 82

JCL-B- 80, 82

JCM *

JCN *

JCP *

JCQ- 78

JCR-A 80, 82

JCR-B- 80, 82

JCT- 78

JCU- 74-75

JCW- 78

JCX- 74

JCY- 74

JCZ- 74-75

JDN *

JDZ- 74-75

JF1 *

JJN- 38

JJS- 39

JKS 24

JN *

JP600 268

JPA-3 *

JSK-36 410

JT 255-256

JTN 255-256

JU *

Catalog Number Index

Catalog Page

Number Catalog Page

Number

* Not listed in this catalog. Call Cooper Bussmann Customer Satisfaction for more information. Call 636-527-3877.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 439

Services &

Application

Guide

Index

439

* Not listed in this catalog. Call Cooper Bussmann Customer Satisfaction for more information. Call 636-527-3877.

JV-L 258

K07C 224

KAA *

KAB *

KAC 106

KAD *

KAF *

KAJ *

KAL *

KAW *

KAX *

KAZ 52

KBC 107

KBD *

KBJ *

KBO *

KBR *

KBT *

KBY *

KCA 46

KCB 46

KCC 46

KCD 46

KCE 46

KCF 46

KCH 46

KCJ 46

KCM 46

KCM-B 46

KCR 46

KCS 46

KCV 46

KCY 46

KCZ 46

KDA 46

KDB 46

KDC 46

KDD 46

KDE 46

KDF 46

KDH 46

KDJ 46

KDM 46

KDP 46

KDR 46

KDT 46

KDU 46

KDY 46

KEF *

KEM *

KER *

KEW 46

KEX 46

KFH-A 46

KFM 46

KFT 46

KFZ 46

KGC *

KGJ *

KGJ-A *

KGJ-E *

KGL *

KGO-E *

KGS *

KGS-A *

KGT *

KGX *

KGY *

KIG 46

KJA *

KJB *

KLC *

KLM 47

KLP *

KLU 28

KMH-C *

KOS15 *

KPF 46

KQO 46

KQT 46

KQV 46

KQW-M *

KRP-C__SP 26-27

KRP-CL 27

KS-19392-L36 *

KT3- 310

KT4- 310

KTE *

KTJ *

KTK 47

KTK-R 19

KTN-R 32

KTN-S *

KTQ 50

KTS-R *

KTS-S *

KTU 28

KU 321

KUH 321

KURL 321

KUSC 321

KUX 321

KUXRL 321

KUXSC 321

KWN-R *

KWS-R 33

L09C 224

L14C 224

LA *

LA8D324 *

LAA *

LAC *

LAG *

LAN *

LAR *

LCT 188-189

LCU *

LD1 *

LD2 *

LEF *

LET 188-189

LKB *

LKC *

LKN *

LKS *

LMMT 188, 190

LMT 188, 190

LP-CC 17

LPF1- 291

LPJ__SP 23

LPJ__SPI 23

LPN-RK__SP 29-31

LPN-RK__SPI 29-31

LPRK-28 411

LPS-RK__SP 29-31

LPS-RK__SPI 29-31

LPT *

LS1D3 *

M09C 224

M14C 224

MAI 195

MAS *

MAX- 55

MAX-__ID 55

MB- 42

MBO *

MC_ _ _ 195

MCRW *

MDA 64

MDA-V 64

MDF *

MDL 64

MDL-V 64

MDM *

MDQ 64

MDQ-V 64

MDX *

MFN *

MIC 51

MIJ *

MIN 51

MIS 52

MKA *

MKB *

MKG *

MMB *

MMT 191-193

MPR *

MS100 *

MSK-45 410

MSL *

MSW710 *

MT 191-193

MT12 *

MTC6 *

MTH *

MTMU *

MV055- 73

MV155- 73

N512-BK 306

NBB *

NBC *

NBE *

NC3- 307

ND-1260 *

NDN111- 305

NDN1A-WH 305

NDN1-WH 305

NDN3- 304

NDN63- 304

NDNA100 305

NDNA200 305

NDNAS 305

NDND1 *

NDNF1-WH 291

NDNFD1-WH 291

NDNLFD1-WH 291

NDNV4- 304

NFA *

NFT2- 306

NFT3- 306

NFTA 305

_NHG _ _ _ B 228-231

NI 235

NITD 225

NNB 415

NNB-R 415

NNC 415

NO.1 413

NO.100 *

NO.140 412

NO.15 *

NO.2 413

NO.201 *

NO.204 *

NO.205 *

NO.213 415

NO.213-R 415

NO.216 415

NO.216-R 415

NO.220 412

NO.226 415

NO.226-R 415

NO.242-R 415

NO.2621 415

NO.2621-R 415

NO.263 415

NO.263-R 415

NO.2641 415

NO.2641-R 415

NO.2642 415

NO.2661-R 415

NO.2662-R 415

NO.2664-R 415

NO.270 412

NO.2880 *

NO.36 411

NO.4 413

NO.5 413

NO.6 413

NO.616 415

NO.616-R 415

NO.626 415

NO.626-R 415

NO.642-R 415

NO.663 415

NO.663-R 415

NO.7 413

NO.8 413

NON 25

NOS 25

NPL *

NRA 305

NSD 225

NSE3-WH 307

NSS3- 307

NTN-R- 415

NTQ23-WH 311

NTS-R- 415

NUE *

NXA *

NXC *

__NZ01 227

__NZ02 227

OEFMA 86

OEGMA 86

OHFMA 86

OHGMA 86

OIA *

OJ *

OLGMA 86

OPM-1038 250-251

OPMNGSA 252-253

OPMNGSAAUX 252-253

OPM-NG-SC3 252-253

OPM-NG-SM3 252-253

OSD 225

OSP *

P- 41

P09C 224

P11C 224

PCB *

PCC *

PCD *

PCF *

PCG *

PCH *

PCI- *

PCT 399

PDB___ 296

PDBFS___ 295

PF1 274

PF1- 291

PLK3-WH 310

PLU11-WH 309

PLU111-WH 309

PLU1-WH 309

PLU3- 309

PMP 240-241

PON 219

PS 240-241

PS1RPLSW *

PSU11-WH 309

PSU111-WH 309

PSU1-WH 309

PV- 48

PVS-R 37

QC202/J *

QC203/J *

Quik-Spec AC Safety

Switches Switches 245-246

Quik-Spec Coordination

Panelboards 238-239

Quik-Spec DC Safety

Switches 242

Quik-Spec Solar Combiner

Boxes 243-244

R11C 224

R25_ 260-262

R60_ 263-265

Catalog Number Index

Catalog Page

Number Catalog Page

Number

* Not listed in this catalog. Call Cooper Bussmann Customer Satisfaction for more information. Call 636-527-3877.

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa

440

Index

Catalog Number Index

REG *

REN *

RES *

RFI *

RFL *

RK1SK-39 410

RK5SK-39 410

RLA *

RLC *

RYA *

RYC *

S- 41

S3Holder *

S500 59

S500-V 59

S501 59

S501-V 59

S504 *

S505 59

S505-V 59

S506 60

S506-V 60

S-8001 288

S-8002 288

S-8101 288

S-8102 288

S-8201 288

S-8202 288

S-8203 288

S-8301 288

SA- 42

SAMI- 259

SB 186

SC 22

SCV15 *

SCV20 *

SCY 276

SDA *

SDLSJ *

SDMSJ *

SDQ *

SDQSJ *

SEW-5B *

SF25H *

SFB1030 *

SFC-FUSE-CAB 414

SFC-SHELF 414

SFD27 *

SFE *

SFLSJ *

SFMSJ *

SFQSJ *

SFR *

SFR1 *

SKA 276

SKLSJ *

SL- 40

SM363 *

SNF-7K *

SNF-7M *

SNL-7K *

SOA72 305

SOU 276

SOW 276

SOX 276

SOY 276

SPJ *

SPP *

SRA-R *

SRD *

SRT-A *

SRU 276

SRU-BC *

SRW 276

SRX 276

SRY 276

SSD 225

SSN 276

SSU 276

SSW 276

SSX 276

SSY 276

STD 225

STI *

STM *

STY 276

SYC *

SZQ *

T- 41

T1320-2R *

T30__ 269-270

T60__ 271-272

TB100- 312-313

TB200- 314-315

TB200HB- 314-315

TB300- 316-317

TB345- 316-317

TB400- 320

TC 41

TCF 20-21

TCF__RN 20-21

TCFH__N 20-21

TCP *

TDC *

TDC10 *

TDC11 *

TDC180 *

TDC600 *

TDLEJ 84

TDLSJ 84

TDMEJ 84

TDP *

TDQSJ 84

TFC *

TFF *

TFL *

TFLSJ 84

TFMEJ 84

TFQSJ 84

TGC *

TGH *

THL *

THLEJ 84

THMEJ 84

TIQ *

TJD *

TKLEJ 84

TKMEJ 84

TL- 40

TP158HC 393

TP15900 *

TP15900-4 391

TP15914 390

TPA 391

TPA-B 391

TPB *

TPC 388

TPCDS 388

TPH *

TPHCS- 395

TPJ *

TPL- 396

TPM 389

TPMDS 389

TPN 397

TPS 392

TPSFH- 414

TPW *

TPWDS *

TRF *

TS- 322-324

TVS 406

TVSS- 407

TXLEJ 84

TXMEJ 84

TXQEJ 84

UHA *

UHC *

UHJ *

UHS *

UHT *

UHW *

ULR *

VFNHA 83

VKNHA 83

W- 40

WDFHO 83

WDLSJ 83-84

WDOH6 83

WDOSJ 84

WER 400

WFFHO 83

WFLSJ 83

WFMSJ 83

WFNHO 83

WFOH6 83

WFOSJ 84

WGA *

WHA *

WHN *

WIE *

WJON6 83

WKB *

WKFHO 83

WKH *

WKJ *

WKK *

WKL *

WKLSJ 84

WKMSJ 83-84

WKNHO 83

WKS *

WKU *

WKV *

WLF *

WMB *

WMM *

WMQ *

WPQ *

WQL *

WQN *

WQP *

WSE *

WSH *

WSL *

WSM *

WSP *

WSQ *

WST *

WSU *

WTJ *

WTK *

WTT *

WTZ *

WUC *

WUD *

WUE *

WUG *

WUH *

WUI *

WUQ *

WUR *

WUU *

WUV *

WUW *

WUY *

WVA *

WVQ *

WVR *

WWD *

WWE *

WWF *

WWG *

WWI *

WWK *

WWL *

WWU *

WWV *

WWX *

WYG *

WYM *

WZC *

WZJ *

WZK *

WZL *

WZX *

XL25X *

XL50F *

XL70F *

Catalog Page

Number Catalog Page

Number

For product da ta sheets, visit www.cooperbussmann.com/datasheets/ulcsa 441

Services &

Application

Guide

Sales & Suppor t

Nor th America - World Headquarters

Cooper Bussmann

114 Old State Road

Ellisville, Missouri 63021

Telephone: 636-527-3877

Fax: 800-544-2570

Email: fusebox@cooperindustries.com

Cooper Bussmann Mexico

Poniente 148 No.933

Col. Industrial Vallejo

Azcapotzalco

C.P. 02300, Mexico D.F.

Telephone: +52-55-5587-0211 Ext.720

Fax: +52-55-5567-1131

E-mail: ventasbussmannmexico@cooperindustries.com

Cooper Bussmann Transpor tation

10955 SW Avery St.

Tualatin, OR 97062

Telephone: 503-692-5360

Fax: 503-692-9091

E-mail: SurePower.Sales@cooperindustries.com

Cooper Bussmann Electronics

1225 F Broken Sound Parkway NW

Boca Raton, FL 33487

Telephone: 561-988-4100

Fax: 561-241-6640

E-mail: customerservice@cooperindustries.com

Asian Headquar ters

Cooper Electric (Shanghai) Co. Ltd.

955 Shengli Road Heqing Pudong, Shanghai 201201

China

Telephone: 8621-2899-3888

Fax: 8621-2899-3997

Bussmann India

Cooper Bussmann, India, Pvt. Ltd.

2, EVR Street,

Sedarpet Indl. Esta te,

Pondic her r y – 605 111

India

Telephone: 91-413-267-2005

Fax: 91-413-267-8182

E-mail: sales.india@cooperindustries.com

European Headquar ters

Cooper (UK) Ltd.

Melton Road

Burton-on-the-Wolds

Leicestershire LE12 5TH

England

Telephone: 44-1509-882737

Fax: 44-1509-882786

E-mail: bule.sales@cooperindustries.com

South American Headquar ters

Cooper Bussmann Brazil

Bussmann do Brasil Ltda.

Rodovia Santos Dumont, km 23

13.300-000, Caixa Postal 095

Itu Sao Paulo

Brazil

Telephone: 55-11-4024-8400

Fax: 55-11-40-24-8424

Sales Suppor t & Manufacturing Facilities