Technical Data 2126 Effective January 2020
Supersedes July 2003
BUSSMANN
SERIES
TRON™ double-pole in-line fuse holders for
Class CC and 13/32” x 1 1/2” fuses
HEX
Catalog symbol
HEX-AA*, HEX-AB, HEX-AC, HEX-AD, HEX-AE,
HEX-AY, HEX-BB, HEX-CC, HEX-JJ, HEX-JK, and
HEX-KK
For breakaway holders, see page 3
Agency information
• *UL® Recognized, Guide IZLT2, File E14853
• *CSA® Certified, Class 6225-01, File 47235
• *RoHS compliant
Recommended fuses
BAF, FNM, FNQ, KLM and KTK (1/10 - 30 A)
Ratings
• Volts: 600 V
• Amps: up to 30 A limited by conductor size
• CSA: 15 A maximum
• Withstand (SCCR): 200 kA RMS Sym.
• IP 67 water-resistant
Recommended torque on coupling nut
10-20 lb-In (1.1-2.2 N•m)
Operating and storage temperature
-40°F (-40°C) to 221°F (105°C)
Insulating boots
See page 2 for boot reference and ordering
information.
General information
For any 13/32” x 1 1/2” fuse
HEY
Catalog symbol
HEY-AA, HEY-AB, HEY-AC, HEY-AD, HEY-AE,
HEY-AL, HEY-BB, and HEY-JJ
For breakaway holders, see page 3
Agency information
• UL Recognized, Guide IZLT2, File E14853
• CSA Certified, Class 622501, File 47235
Recommended fuses
KTK-R, FNQ-R, & LP-CC
Ratings
• Volts: 600 V or less
• Amps: up to 30 A limited by conductor size
• CSA: 15 A maximum
• Withstand (SCCR): 200 kA RMS Sym.
• IP 67 water-resistant
Recommended torque on coupling nut
10-20 lb-In (1.1-2.2 N•m)
Operating and storage temperature
-40°F (-40°C) to 221°F (105°C)
Insulating boots
See page 2 for boot reference and ordering
information.
General information
• Optional breakaway receptacle
• Polarized
• Accepts Class CC branch circuit fuses
• Particularly applicable in street lighting circuits
Example
A double-pole, in-line holder for Class CC fuses. A
single #12 stranded copper wire, copper crimp, on
the load side. A single #4 stranded, copper wire,
copper crimp on the line side. Insulating boots are
required.
1. Choose HEY-
2. Choose “A” for load side
3. Choose “C” for line side
4. Choose 2A0660 insulating boots from page 2
Complete catalog number: HEY-AC, 2A0660; four
insulating boots required per holder
2
Technical Data 2126
Effective January 2020
Bussmann series TRON double-pole in-line fuse holders
for Class CC and 13/32” x 1 1/2” fuses
Eaton.com/bussmannseries
Use these part numbers to order insulating
boots for a non-breakaway holder:
Catalog no. Description
2A0660 Single conductor
2A0661 Dual conductor
Catalog
no. Description
Data
sheet no.
HEB*
One-pole 13/32” x 1-1/2”
supplemental in-line fuse
holder
2127
HEZ One-pole Class CC in-line
fuse holder 2130
HET One-pole in-line, permanently
installed neutral 2125
NNB 13/32” x 1-1/2” neutral
dummy link (not a fuse) —
* Bussmann series HEB in-line fuse holders are the legacy Bussmann
TRON HEB in-line fuse holders.
† See terminal data tables for exceptions.
Related products
Boot reference
HEX
HEY
—
Load
terminal
Line
terminal
Ordering information
4.1
(104)
4.7
(119)
1.3
(ø33)
0.8
(ø20)
Strip wire insulation
to de
p
th of terminal
Crimp terminal twice
at locations 1/3 distance
from each end
Installation instructions
Strip wire insulation equal to the depth of the crimp or screw
terminal. Torque screw terminal to 35 lb-In (3.9 N•m) or crimp
terminal twice, spacing crimps a distance of one-third from each end
(as shown below) using an appropriate crimp tool and die.
Catalog and specification data
Conductor terminals
Conductor data
Terminal type Size
No. Per
terminal
Solid
Stranded
Catalog
symbol
Copper crimp #12 to #8 1 • • A
#12 2 • •
#10 2 • •
B#6 1 • •
#4 1 • •
#8 2 • • C
#4 1 — •
#6 2 • • D
#2 1 — •
#4 2 • • E
Copper set-screw
#12 to #3 1 • • J
#12 to #3 2 • • K
Aluminum set-screw
#12 to #2 1 • • L
#12 to #2 2 • • Y
Bussmann series TRON double-pole in-line fuse holders
for Class CC and 13/32” x 1 1/2” fuses
Technical Data 2126
Effective January 2020
Eaton
1000 Eaton Boulevard
Cleveland, OH 44122
Eaton.com
Bussmann Division
114 Old State Road
Ellisville, MO 63021
United States
Eaton.com/bussmannseries
© 2020 Eaton
All Rights Reserved
Printed in USA
Publication No. 2126
January 2020
Eaton and Bussmann are valuable trademarks
of Eaton in the US and other countries. You
are not permitted to use the Eaton trademarks
without prior written consent of Eaton.
CSA is a registered trademark of the Canadian
Standards Group.
UL is a registered trademark of the
Underwriters Laboratories, Inc.
Follow us on social media to get the
latest product and support information.
For Eaton’s Bussmann series
product information,
call 1-855-287-7626 or visit:
Eaton.com/bussmannseries
The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are
by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the
end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit
distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once
a product has been selected, it should be tested by the user in all possible applications.
Breakaway holders
HEX catalog symbol
HEX-AW, HEX-AW-DRLC-A, HEX-AW-DRYC, HEX-JW-DRYC, and
HEX-KW-BRYC
HEY catalog symbol
HEY-AW-DRLC-A, HEY-AW-DRYC, HEY-AW-DRLC-B and
HEY-AW-DRLC-J
Recommended torque on coupling nut
10-20 lb-In (1.1-2.2 N•m)
Example
A double-pole, in-line, breakaway holder for 13/32“ × 11/2“ fuses, a
single #12 solid copper wire, copper crimp, on the load side. A single
#10 stranded copper wire, copper crimp on the line side. Insulating
boots are required.
1. Choose HEY-
2. Choose “A” from 1st page for load side
3. Choose “W” for breakaway requirement
4. Choose “DRLC-A” for two-pole breakaway receptacle on line
side
Complete catalog number: HEY-AW-DRLC-A (Insulating boots come
with this catalog no.)
Catalog and specification data
Breakaway receptacles
Conductor data
Terminal type Wire range
No. Per
terminal
Solid
Stranded
Catalog
symbol
*Double
pole
Copper crimp #12 to #8 1 ••-DRLC-A
#6 1 • • -DRLC-B
Copper set-screw
#12 to #3 1 • • -DRLC-J
#12 to #2 2 • • -DRYC
* Terminal illustration shows the end views of single-pole
receptacle and one pole only of the double pole
receptacles. Thus, for example, in the case of a
double-pole, set-screw type receptacle with terminals
that accept two conductors, a total of four conductors
could be connected to the receptacle.
Ordering information
HEX
HEY
—W—
Load
terminal
Line
terminal
