Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com 461
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Amphenol
MIL-DTL-22992, Class ‘L’
TABLE OF CONTENTS
HEAVY DUTY, MIL-DTL-22992, CLASS L CONNECTORS
• Product Features, Benefits and Specifications . . . . . 462
• Product Introduction, Features. . . . . . . . . . . . 463
• Insert Arrangements . . . . . . . . . . . . . 464, 465
• Alternate Positioning . . . . . . . . . . . . . . . 466
• How to Order . . . . . . . . . . . . . . . . . . 467
Shell Styles:
• Wall Mount Receptacle (power source) MS (CL) 90555. . 468
• Straight Plug MS (CL) 90556 . . . . . . . . . . . . 469
• Cable Connecting Receptacle without
Coupling Ring MS (CL) 90557. . . . . . . . . . . . 470
• Wall Mount Plug with Coupling Ring
(equipment end) MS (CL) 90558 . . . . . . . . . . . 471
Contacts, Accessories / Installation Instructions
• Contacts, Contact Bushings . . . . . . . . . . . . 472
• Strain Reliefs, Sealing Glands, Protection Caps . . . . . 473
• Installation Instructions . . . . . . . . . . . .474 - 477
MIL-DTL-22992, Class L Connector Typical Markets:
• Power Generators / Air Conditioning Units
• Ground Missile Systems
• Military Shelters / Military Communication Centers
• Medical Units
Amphenol
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462
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• High Current Capacity
• Rugged Construction
• Safety
• Serviceability
Heavy Duty MIL-DTL-22992, Class L
Large Circular for Military & Industrial
Condition Configuration Description Reference
Thermal Shock Unmated Five complete on hour temperature cycles of
–55°C to +125°C
MIL-STD-1344, method
1003, test condition A
Moisture Resistance
(Cable mounted connectors) Mated Ten complete 24 hour cycles of +25°C to +65°C
temperature at 90% to 98% humidity
MIL-STD-202, method
106
Durability Mated 500 complete mating/unmating cycles MIL-DTL-22992
Salt Spray (Corrosion) Unmated 48 hour exposure to atomized 5% saline solution
at +35°C
MIL-STD-1344, method
1001
Vibration Mated
10 to 55 Hz, .06 inch total excursion in 1 minute
cycles for 6 hours, 55 to 2000 Hz, 10G peak
amplitude sweep
MIL-STD-1344, method
2005
High Impact Mated Nine hammer blows from 1, 3 and 5 feet, three
each in three axes on mounting panel
MIL-STD-202, method
207
Heat Rise (Class L only) Mated Maximum rated DC current for four hours at
+25°C in still air MIL-DTL-22992
Fluid Immersion Unmated 20 hours immersion in hydraulic uid and
lubricating oil MIL-DTL-22992
Water Immersion Mated and Unmated 4 hours immersion at 1 atmosphere pressure
differential MIL-DTL-22992
Amphenol meets the demands for heavy duty & heavy power connectors
with features that are critical to reliable interconnection in rugged
environmental conditions. Heavy Duty Class L* connectors are highly
suitable for industrial or military applications.
• Heavy electrical loads: current range from 40 to 200 amperes
• Direct current or single/three phase, 60/400 Hertz alternating current
• Automatic grounding for safety
• Meet MIL-DTL-22992 qualication
• Resistance to the operating environments of heat, moisture, vibration,
high impact and immersion - see chart below.
• Double stub coupling threads for faster connections; no cross
threading, easy cleaning
• Left hand accessory threads to minimize cable twisting, wire breakage,
accidental connector disassembly
• Gaskets or “O” rings at appropriate surfaces for perfect weather tight
connections
Amphenol also supplies other series of heavy duty cylindrical connectors:
• QWLD Series - Military MIL-DTL-22992 qualied connectors and industrial equivalents.
• QWL Series - A more compact heavy duty design for industrial power and control applications.
• Star-Line, Star-Line EX Series - Industrial high power circulars.
See the Options/Others section of this catalog for more
information on these series.
* Amphenol Class L design is covered by one or more of the
following U.S. Patent Numbers: 3,023,396, 3,221,292
Amphenol Heavy Duty Class L connectors have been exposed to the following environmental
conditions, without compromise of mechanical integrity or degradation of electrical performance.
Class L Connectors
on a Power Unit
Class L Plug
and Receptacle
Product Features, Benefits and
Specifications
463
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Class L Back-
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Options
Others
Heavy Duty MIL-DTL-22992, Class L
Product Introduction & Features
Shell Styles The Amphenol Class “L” heavy duty connectors are the largest
size cylindricals. They are available only in the specic
congurations prescribed by MIL-DTL-22992 for either military
or industrial applications. This rigid conguration control assures
correct interconnection of electrical circuits for maximum safety
and reliability. Controlled parameters include:
• Connector shell style and contact type - Wall mount and
cable connecting receptacles are supplied with socket
contacts only, and always lead from the power source. Plugs
(with coupling rings) have pin contacts only, and always lead
to the equipment end.
• Shell size - The direct relationship of shell size to current
carrying capability reduces the possibility of inadequate
wiring for heavy electrical loads†.
Design features of Amphenol Class L provide:
• Greatest Capacity - Current ranges 40 to 200 amps,
conductor sizes 6 to 4/0.
• Safety - Complete protection of personnel and equipment if
connectors are inadvertently disconnected under load.
• Foolproof Mating - Design incorporates voltage, current,
frequency, phase and grounding requirements
• Standardization - MIL-DTL-22992 Class L insert arrange-
ments specify connector/cable combinations for maximum
reliability.
• Serviceable Contacts - Contacts are normally crimped to
the cable before connector assembly. No insertion tools
required. Bushings are available to adapt smaller diameter
wires to larger contacts.
• Arc Quenching Design - Recessed socket contacts within
the insert create an arc suppressing chamber which protects
the user when connectors are separated under load.
• Programmed Coupling Sequence - Grounding and neutral
contacts engage before power contacts.
• Waterproof Design - A unique combination of grommets
and seals provides waterproong in any condition - mated or
unmated, capped or uncapped.
• Rugged Construction - Machined from high strength
aluminum. Straight-line attachment of accessories eliminates
possibility of cable twisting or misalignment.
• Accessories - Supplied with all Class L connectors as
indicated on the individual connector descriptions. Replace-
ment accessories may be ordered separately. See pages
472 and 473.
Shell Size Current Rating (Amperes) Contact Size
28 40 6
32 60 4
44 100 1/0
52 200 4/0
• Keyway Position - Four positions of the main keyway are
used to discriminate between the following power sources:
two wire D.C.
two wire single phase A.C.
three wire single phase A.C.
four wire three phase A.C.
• Insert rotation - When carrying alternating current (A.C.),
different angular rotations of the insert within the connector
shell are used to distinguish between 60 Hertz and 400 Hertz
circuits.
Cable Connecting
Receptacle
without Coupling Ring
Wall Mount Plug with
Coupling Ring
(equipment end)
Straight Plug
Wall Mount
Receptacle
(power source)
464
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Heavy Duty MIL-DTL-22992, Class L
Insert Arrangements
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 6 -317 -329
N, G 6N -318 -329
Shell Size 28, 40 amp rating
AN
CB
G
Cable:
28-12 IPCEA, type G, round, four #8 conductors
28-13 CO-04 HDF, (4-6-4/12R) 1090 per MIL-DTL-3432
28-12, 28-13
Three phase AC, 4 wire, grounding
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A 4 -320 -331
N 4N -321 -331
G1, G2 6N -318 -329
Shell Size 32, 60 amp rating Cable:
32-04 IPCEA, type G, round, two #6 conductors
32-05 CO-02 HDF, (2/4-2/8R) 1100 per MIL-DTL-3432
32-04, 32-05
Single phase AC, 2 wire, grounding
G1
NA
G2
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 4 -320 -331
N 4N -321 -331
G 6N -318 -329
Shell Size 32, 60 amp rating Cable:
32-12 IPCEA, type G, round, four #6 conductors
32-13 CO-04 HDF, (4/4-4/12R) 1290 per MIL-DTL-3432
32-12, 32-13
Three phase AC, 4 wire, grounding
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A1/0-1 -323 -333
N1/0N-1 -324 -333
Shell Size 44, 100 amp rating
Cable:
44-02 IPCEA, type W, round, two #2 conductors
44-03 CO-02 HDF, (2/1) 1385 per MIL-DTL-3432
44-02, 44-03
28 Volts DC, 2 wire
A
N
IPCEA – Insulated Power Cable Engineers Association Contact Legend
64 1/0 4/0
C
AN
B
G
465
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Class L Back-
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Options
Others
Heavy Duty MIL-DTL-22992, Class L
Insert Arrangements
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 1/0-1 -323 -333
N1/0N-1 -324 -333
G1, G2, G3, G4 6G -319 -330
Shell Size 44, 100 amp rating
Cable:
44-12 IPCEA, type G, round, four #2 conductors
44-13 CO-04 HDF, (4/1-4/8R) 1620 per MIL-DTL-3432
44-12, 44-13
Three phase AC, 4 wire, grounding
A
G4 G1
G3 G2
B
CN
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 1/0-1 -323 -333
G1/0N-1 -324 -333
Shell Size 44, 100 amp rating
For Navy Ground Support Equipment use only.
Cable:
44-51 Available in MS90556 & MS90557 only
IPCEA, type W, round, four #1 conductors
44-52 Available in MS90556 only
IPCEA, type W, round, four #2 conductors
44-56 Available in MS90556 only
IPCEA, type W, round, four #6 conductors
44--50, 44-51, 44-52,44-56
Three phase AC, 3 wire, grounding
A
GB
C
44-50 Available in MS90555 & MS90558 only
4 each #1 conductors
Contacts:
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 4/0 -327 -335
N4/0N -328 -335
G1, G2, G3, G4 4G -322 -332
Shell Size 52, 200 amp rating
Cable:
52-12 IPCEA, type G, round, four #4/0 conductors
52-13 CO-04 HDE, (4/0000-4/4R) 2380
per MIL-DTL-3432
52-12, 52-13
Three phase AC, 4 wire, grounding
A
B
G4 G1
CN
G3 G2
IPCEA – Insulated Power Cable Engineers Association Contact Legend
64 1/0 4/0
466
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Heavy Duty MIL-DTL-22992, Class L
Alternate Positioning
Class L Insert Rotations
Insert
Arrangements
Keying Position
(degrees from normal position)
DC or 60 Hz
Normal
400 Hz
W X Y Z
28-12 0 – – 180 –
28-13 0 – – 180 –
32-04 0 – 90 – –
32-05 0 – 90 – –
32-12 0 – – 180 –
32-13 0 – – 180 –
44-12 0 – – – 60
44-13 0 – – – 60
44-50 0 – – – –
44-51 0 – – – –
44-52 0 – – – –
44-56 0 – – – –
52-12 0 300 – – –
52-13 0 300 – – –
Alternate Insert Rotations
To avoid cross-plugging problems in applications requiring
the use of more than one connector of the same size and
arrangement, alternate insert rotations are available.
As shown in the diagrams below, position W, X, Y and Z
are possible rotations of the insert within Class L
connectors. The front face of the pin insert is rotated within
the shell in a clockwise direction from the normal shell key.
The socket insert would be rotated counter-clockwise the
same number of degrees in respect to the normal shell
key.
See how to order on next page; the keying position letter
W, X, Y or Z goes at the end of the part number.
B
A
A
B
A
B
A
B
Position WPosition XPosition YPosition Z
Views looking into front face of pin insert or rear of socket insert.
Alternate Master Key/Keyway Rotations
Another option for preventing cross-mating of
incompatible connector voltages is to choose an
alternate rotation of the key/keyway positions of the
connector shell. The diagram below shows positions 1,
4, 5 and 6 for the master key/keyway.
See how to order on next page; the alternate master
key/keyway position is Step 4 in building a part number.
4
5
6
N
Normal
1
MASTER
KEYWAY
TYPICAL
SOCKET
ARRANGEMENT
15
REF
front face of receptacle shown
Note that insert arrangement does not
rotate with master key/keyway
467
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Class L Back-
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Options
Others
1. 2. 3. 4. 5. 6. 7.
MS
Number
Shell
Finish
Shell
Size
Alternate Master Key/
Keyway Position
Insert
Arrangement
Contact
Type
Alternate Insert
Rotation
MS90555 C 32 4 12 S Y
Commercial
Number
Shell
Finish
Shell
Size
Alternate Master Key/
Keyway Position
Insert
Arrangement
Contact
Type
Alternate Insert
Rotation
CL90555* C 32 4 12 S Y
Designates
MS90555 Wall Mount Receptacle (Power Source)
MS90556 Straight Plug
MS90557 Cable Connecting Receptacle without Coupling Ring
MS90558 Wall Mount Plug with Coupling Ring (Equipment End)
Designates Current Carrying Capability
28 40 amperes
32 60 amperes
44 100 amperes
52 200 amperes
Easy Steps to build a part number... Class L Series
Step 1. Select a MS Number
Step 3. Select a Shell Size - (related directly to
current carrying capability)
Step 5. Select an Insert Arrangement
See pages 464-465 for available insert arrangements for Class L connectors.
Insert arrangements are determined by connector size (current carrying
capability) and cable conguration to be accommodated.
Step 4. Select an Alternate Master Key/Keyway Position if needed
N designates normal position. Positions 1, 4, 5 and 6 of the master key/keyway
prevent cross-mating of incompatible voltages. See diagram on page 466.
Heavy Duty MIL-DTL-22992, Class L
How to Order
Designates
CConductive for AC circuits
NNon-conductive for DC circuits
Step 2. Select a Shell Finish
Designates
PPin Contacts
SSocket Contacts
Step 6. Select a Contact Type Step 7. Select an Alternate Insert Rotation if needed
Used to prevent cross-mating of incompatible frequencies.
Absence of a letter in this space indicates Normal (0°)
position of the insert. Refer to page 466.
Amphenol Federal Vendor Identification FSCM77820
MS90555/CL90555 and MS90557/CL90557 are supplied with socket con-
tacts only. MS90556 /CL90556 and MS90558/CL90558 are supplied with
pin contacts only.
*Commercial Numbers are supplied less protection caps and strain reliefs
which can be added separately.
Shell
Size
Current
Rating
Amps
Shell Master Key/Keyway Position
60Hz & 400 Hz
1 Phase 3 Phase
2 Wire 3 Wire 3 Wire 4 Wire
120 VAC 240 VAC 120/240
VAC
450/480
VAC
120/208
VAC
240/416
VAC
277/480
VAC
28 40 4 (120°) 5 (135°) 4 (120°) –4 (120°) 5 (135°) 6 (150°)
32 60 4 (120°) 5 (135°) 4 (120°) –4 (120°) 5 (135°) 6 (150°)
44 100 4 (120°) –4 (120°) 1 (60°) 4 (120°) 5 (135°) 6 (150°)
52 200 – – 4 (120°) –4 (120°) 5 (135°) 6 (150°)
Grounding Assemblies: Finish C
Shell
Size
Current
Rating
Amps
Shell Master Key/Keyway
Position
DC
2 Wire
28 VDC
28 40 N (105°)
32 60 N (105°)
44 100 N (105°)
52 200 N (105°)
Non-grounding Assemblies: Finish N
Designates
CL90555 Wall Mount Receptacle (Power Source)
CL90556 Straight Plug
CL90557 Cable Connecting Receptacle without Coupling Ring
CL90558 Wall Mount Plug with Coupling Ring (Equipment End)
Step 1. Select a Commercial Number
468
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Class L
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MS (CL) 90555, MIL-DTL-22992, Class L
Wall Mount Receptacle (power source)
Shell
Size
A Thread
Class 2A
.1428P-.2857L
Double Stub
F*
±.031
G Dia.
+.006
–.010
H
±.005
J
+.016
–.000
N Dia.
+.011
–.020
R
(BSC)
S
+.021
–.020
T Dia.
±.005
28 2.000 1.376 1.938 1.514 2.188 2.000 1.844 2.375 .177
32 2.250 1.376 2.188 1.514 2.188 2.250 2.062 2.625 .209
44 3.000 1.438 3.062 1.733 2.532 3.125 2.812 3.375 .281
52 3.500 1.438 3.562 1.733 2.532 3.625 3.156 3.875 .281
Part
Number
Shell
Finish
Shell
Size
Master Key/Keyway
Position
Insert
Arrangement
Contact
Type
Alternate
Insert Rotation
MS90555 C or N XX X XX P or S X
CL90555** C or N XX X XX P or S X
PART # To complete, see how to order page 467.
All dimensions for reference only.
Protective cover MS90563 is supplied as part of this connector assembly. Refer to page 473 for dimensions.
*F dimension applies only when rear nut is fully tightened.
**Commercial Numbers are supplied less protection caps and strain reliefs which can be added separately.
J
.531
MIN
FULL
THD
F*
GN
GROMMET
GASKET
H
A
T
4 HOLES
S
R.312
+.011
–.010
.750 +.031
–.000
.031
±.005
469
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Class L Back-
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Options
Others
MS (CL) 90556, MIL-DTL-22992, Class L
Straight Plug
Part
Number
Shell
Finish
Shell
Size
Master Key/Keyway
Position
Insert
Arrangement
Contact
Type
Alternate
Insert Rotation
MS90556 C or N XX X XX P or S X
CL90556* C or N XX X XX P or S X
PART # To complete, see how to order page 467.
Shell Size
and
Arrangement
A Thread
Class 2A
.1428P-.2857L
Double Stub
C Dia.
Max.
E
Cable Range
K
±.005
L Max.
Free Length
M
Approx.
Free Length
N Dia.
+.011
–.020
Q Dia.
Max.
28-12 2.000 2.439 1.047-.922 1.557 8.188 7.188 2.000 2.312
28-13 1.130-1.005 7.188
32-04
2.250 2.689
.969-.844
1.557 8.188
7.188
2.000 2.56232-05, 32-12 1.130-1.005 7.188
32-13 1.342-1.217 8.688
44-02
3.000 3.667
1.312-1.187
1.776 10.172
10.688
2.500 3.531
44-03 1.438-1.313 9.688
44-12 1.516-1.391 10.688
44-13 1.672-1.547 12.688
44-51
3.000 3.667
1.734-1.609
1.776 10.172
11.688
2.500 3.53144-52 1.525-1.435 11.188
44-56 1.135-1.065 7.188
52-12 3.500 4.167 2.328-2.183 1.776 11.109 17.188 3.250 4.016
52-13 2.453-2.308 18.188
All dimensions for reference only.
Protective cover MS90564 is supplied as part of this connector assembly. Refer to page 473 for dimensions.
Contact bushings MS3348 are supplied as part of connector as required. Refer to page 472 for dimensions.
*Commercial Numbers are supplied less protection caps and strain reliefs which can be added separately.
ML
"O" RING
K
MAIN JOINT
GASKET
C
Q
GLAND
.750 +.031
–.000
NE
A
470
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MS (CL) 90557, MIL-DTL-22992, Class L
Cable Connecting Receptacle without coupling ring
Part
Number
Shell
Finish
Shell
Size
Master Key/Keyway
Position
Insert
Arrangement
Contact
Type
Alternate
Insert Rotation
MS90557 C or N XX X XX P or S X
CL90557* C or N XX X XX P or S X
PART # To complete, see how to order page 467.
Shell Size
and
Arrangement
A Thread
Class 2A
.1428P-.2857L
Double Stub
B
±.005
C Dia.
Max.
E
Cable Range
L Max.
Free Length
M
Approx.
Free Length
N Dia.
+.011
–.020
28-12 2.000 1.514 2.439 1.047-.922 8.156 7.188 2.000
28-13 1.130-1.005 7.188
32-04
2.250 1.514 2.689
.969-.844
8.156
7.188
2.00032-05, 32-12 1.130-1.005 7.188
32-13 1.342-1.217 8.688
44-02
3.000 1.733 3.667
1.312-1.187
10.125
10.688
2.500
44-03 1.438-1.313 9.688
44-12 1.516-1.391 10.688
44-13 1.672-1.547 12.688
44-51 1.734-1.609 11.688
52-12 3.500 1.733 4.167 2.328-2.183 11.062 17.188 3.250
52-13 2.453-2.308 18.188
All dimensions for reference only.
Protective cover MS90563 is supplied as part of this connector assembly. Refer to page 473 for dimensions.
Contact bushings MS3348 are supplied as part of connector as required. Refer to page 472 for dimensions.
*Commercial Numbers are supplied less protection caps and strain reliefs which can be added separately.
L
CM
N
E
GLAND
"O" RING
.750 +.031
–.000
B
A
.531
MIN FULL THD
471
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Crimp Rear
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Class L Back-
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Options
Others
MS (CL) 90558, MIL-DTL-22992, Class L
Wall Mount Plug with Coupling Ring (equipment end)
Part
Number
Shell
Finish
Shell
Size
Master Key/Keyway
Position
Insert
Arrangement
Contact
Type
Alternate
Insert Rotation
MS90558 C or N XX X XX P or S X
CL90558** C or N XX X XX P or S X
PART # To complete, see how to order page 467.
Shell
Size
A Thread
Class 2A
.1428P-.2857L
Double Stub
F*
+.016
–.000
G Dia.
+.006
–.010
J
±.031
K
±.005
N Dia.
+.011
–.020
Q Dia.
Max.
R
(BSC)
S
+.021
–.020
T Dia.
±.005
28 2.000 2.639 1.938 .959 1.557 2.000 2.312 1.844 2.375 .177
32 2.250 2.639 2.188 .959 1.557 2.250 2.562 2.062 2.625 .209
44 3.000 2.998 3.062 1.021 1.776 3.125 3.531 2.812 3.375 .281
52 3.500 2.998 3.562 1.021 1.776 3.625 4.016 3.156 3.875 .281
All dimensions for reference only.
Protective cover MS90564 is supplied as part of this connector assembly. Refer to page 473 for dimensions.
*F dimension applies only when rear nut is fully tightened.
**Commercial Numbers are supplied less protection caps and strain reliefs which can be added separately.
JF
T
4 HOLES
S
R
Q
INTERFACIAL
SEAL
MAIN JOINT
GASKET
A
K
.750 +.031
–.000
.312 +.011
–.010
.031
±.005
GASKET
GROMMET
NG
472
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Class L
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Matrix
Matrix|Pyle
MIL-DTL-22992, Class L Accessories
Contacts, Contact Bushings
A
REF
B
CH
.750
+.031
–.000
G
D
K
REF
.750
+.031
–.000
J
HC
G
Socket
MS Part Number
Pin
MS Part Number
Contact
Size
Wire
Well
Size
A
Ref.
B
±.005
C
Dia.
D
Dia.
±.001
G
Dia.
H
Dia.
J
±.005
K
Ref.
M39029/49-335 M39029/48-327 4/0 4/0 3.207 2.097 .641 +.004 .500 .781 ±.003 .750 +.004 1.283 2.393
–.003 –.003
–M39029/48-328 4/0N 4/0 3.325 2.215 .641 +.004 .500 .781 ±.003 .750 +.004 – –
–.003 –.003
M39029/49-333 M39029/48-323 1/0 13.207 2.097 .406 +.004 .357 .609 ±.003 .506 +.004 1.283 2.393
–.003 –.003
–M39029/48-324 1/0N 13.325 2.215 .406 +.004 .357 .609 ±.003 .506 +.004 – –
–.003 –.003
M39029/49-331 M39029/48-320 4 4 2.786 1.738 .281 ±.002 .225 .417 ±.002 .374 ±.002 1.158 2.206
–M39029/48-321 4N 4 2.904 1.856 .281 ±.002 .225 .417 ±.002 .374 ±.002 – –
M39029/49-329 M39029/48-317 6 6 2.786 1.738 .234 ±.002 .178 .342 ±.002 .312 ±.002 1.158 2.206
–M39029/48-318 6N 6 2.904 1.856 .234 ±.002 .178 .342 ±.002 .312 ±.002 – –
M39029/49-332 M39029/48-322 4G 4 2.856 1.756 .281 ±.002 .225 .417 ±.002 .374 ±.002 1.752 2.862
M39029/49-330 M39029/48-319 6G 6 2.856 1.746 .234 ±.002 .178 .342 ±.002 .312 ±.002 1.752 2.862
MS
Part Number
Contact Wire
Barrel Size
(Ref)
Wire
Size
(Ref)
A Dia.
+.010
–.003
B Dia.
+.002
–.003
MS3348-1-2L 1 2 .359 .396
MS3348-4-5L 4 5 .250 .272
MS3348-4-6L 4 6 .225 .272
MS3348-6-8L 6 8 .185 .225
MS3348-6-9L 69 .155 .225
MS3348-1-6L 1 6 .225 .396
MS3348-4-8L 4 8 .185 .272
MS3348-6-10L 6 10 .136 .225
MS3348-4/0-2/0L 4/0 2/0 .500 .629
Order Replacement Contacts by MS part number listed below for either Socket or Pin:
.700
+.017
–.016
BA
All dimensions for reference only.
Order Contact Bushings by MS part number listed below:
See page 476 and 477 for information on Contact Removal Tools for Class L connectors.
M39029/48
Pin Contact
M39029/49
Socket Contact
MS3348
Contact
Bushing
473
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Class L Back-
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Options
Others
MIL-DTL-22992, Class L Accessories
Strain Reliefs, Sealing Glands, Protection Caps
MS
Part Number
Arrangement
Number
A Dia.
+.000
–.010
H Dia.
Cable Range L
Approx.
Max. Min.
MS90561-2 28-13, 32-12 1.797 1.145 1.003 8.000
MS90561-4 28-02, -28-04 1.797 .844 .688 7.500
MS90561-12 28-12 1.797 1.047 .891 8.000
MS90561-13 32-13 1.797 1.342 1.185 9.500
MS90561-15 44-12 2.235 1.516 1.360 11.500
MS90561-16 44-13 2.235 1.688 1.531 13.500
MS90561-17 52-12 2.922 2.328 2.039 18.000
MS90561-18 52-13 2.922 2.500 2.211 19.000
MS90561-19 44-51 2.235 1.750 1.550 12.500
MS90561-20 44.52 2.235 1.578 1.375 12.000
MS90561-21 44-56 2.235 1.160 1.010 8.000
H
LA
Order Strain Reliefs by MS part number listed below:
MS
Part Number
Arrangement
Number
A Dia.
+.000
–.020
B Dia.
+.020
–.000
C
±.010
Min
Cable
Dia. Ref.
MS23747-2 28-13, 32-05, 32-12 1.805 1.130 1.034 1.005
MS23747-12 28-12 1.805 1.047 1.034 .922
MS23747-13 32-13 1.805 1.342 1.034 1.217
MS23747-14 44-03 2.242 1.438 1.160 1.313
MS23747-15 44-12 2.242 1.516 1.160 1.391
MS23747-16 44-13 2.242 1.672 1.160 1.547
MS23747-18 52-12 2.927 2.328 1.284 2.183
MS23747-19 52-13 2.927 2.453 1.284 2.308
MS23747-20 44-51 2.242 1.734 1.160 1.609
MS23747-21 44.52 2.242 1.562 1.160 1.437
MS23747-22 44-56 2.242 1.150 1.160 1.025
Order Cable Sealing Glands by MS part number listed below:
C
B
Protection Caps
MS
Part Number
Use with
Shell
Size
A Thread
Class 2B
.1428P-.2857L
Double Stub
B Dia. Ref.
C Approx.
For
MS90555
For
MS90557
MS90563-1( ) 28 2.000 .177 .177 6.000
MS90563-3( ) 32 2.250 .209 –4.500
MS90563-4( ) 32 2.250 –.177 6.000
MS90563-7( ) 44 3.000 .281 .281 7.500
MS90563-11( ) 52 3.500 .281 .281 7.500
All dimensions for reference only.
Order Protection Caps by MS part number listed in charts below.
To complete the MS part number add letter C (Conductive) for AC
or N (Non-Conductive) for DC connector assemblies.
MS90563 Protection Caps used with
MS90555 Wall Mount Receptacle, MS90557 Cable Connecting Receptacle
MS
Part Number
Use with
Shell
Size
A Thread
Class 2B
.1428P-.2857L
Double Stub
B Dia. Ref.
C
Approx.
J
Max.
For
MS90556
For
MS90558
MS90564-1( ) 28 2.000 .177 .177 7.500 2.266
MS90564-3( ) 32 2.250 –.209 6.000 2.266
MS90564-4( ) 32 2.250 .177 –7.500 2.266
MS90564-7( ) 44 3.000 .281 .281 8.500 2.484
MS90564-11( ) 52 3.500 .281 .281 8.500 2.484
MS90564 Protection Caps used with
MS90556 Straight Plug, MS90558 Wall Mount Plug
J
A
RIVET
C
B
A
GASKET
.969
MAX
C
B
MS90561
Cable Strain
Relief
MS23747
Cable
Sealing Gland
474
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Class L
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Matrix
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MIL-DTL-22992, Class L
Installation Instructions
Complete installation instructions (L-1014) for Class L connectors are
available online at www.amphenol-aerospace.com
The following pages are condensed assembly instructions to familiarize the
user with the installation procedure and tooling required.
Cable Preparation
(MS90556 and MS90557 connectors only)
The following table shows the standard wire color coding, generator terminal
markings, and connector contact identication used with Class L connectors.
Standardized Generator Wiring and Connections
Generator
Terminal Marking Current Contact
Designation
Conductor
Circuit Wire Color
+ (POS)
– (NEG) ground
28Vdc
28Vdc
A
N
Positive
Negative
Black
White
L1
L2
L3
L0
G (or Gnd)
AC
AC
AC
AC
AC
A
B
C
N
G
Phase A
Phase B
Phase C
Neutral
Safety grounding
Black
Red
Blue (Commercial may be orange)
White
Green (Commercial may be bare)
Step 1) Determine cable lay to facilitate alignment of contacts and insert
holes without wire crossing.
Step 2) Strip cable jacket to dimension shown. Avoid cutting or nicking
individual conductor insulation.
Connector
Size
D Inches
Approx.
28 3.000
32 3.000
44 4.250
52 5.000
DSEE
NOTE
OUTER
JACKET
NOTE: Some insert arrangements require that two or
more ground wires are terminated into one contact.
Dimension D must therefore be increased to permit
routing these wires around the larger conductors.
Step 3) Install connector components in the order shown in the applicable
assembly view illustrated on pages 475 and 476.
Step 4) Strip insulation of individual conductors to 3/4 inch from end of
connector.
475
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Crimp Rear
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Matrix
26500
Pyle 22992
Class L Back-
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Options
Others
MIL-DTL-22992, Class L
Installation Instructions, cont.
MS90555
Wall Mount Receptacle
MS90556
Straight Plug
NOTE: On shell size 32 connectors, item #6 (gland washer) is contained within
item #5 (back adapter).
98 7 6 5
4 3 2 1
11 10
5 4 3
2 1
Wall Mount Receptacle
Components:
1. Shell
2. Insert Assembly, Socket
3. Contact, Socket
4. Grommet Assembly,
Socket
5. Nut, Retaining
6. Protective Cap Assembly
(not shown)
7. Flange Gasket (not shown)
Straight Plug Components:
1. Shell & Coupling Nut
Assembly
2. Insert Assembly, Pin
3. Contact, Pin
4. Spacer Assembly, Pin
5. Back Adapter
6. Gland Washer
7. Gland
8. Cable Grip
9. Gland Nut
10. Lockwasher (3 each)
11. Screw (3 each)
12. Protective Cap Assembly
(not shown)
476
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22992
Class L
Back-
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Options
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Release
Matrix
Matrix|Pyle
MS90557
Cable Connecting Receptacle
MS90558
Wall Mount Plug
NOTE: On shell size 32 connectors, item #6 (gland washer) is contained within
item #5 (back adapter).
MIL-DTL-22992, Class L
Installation Instructions, cont.
98 7 6 5
4 3 2 1
11 10
5 4 3 1
2
Cable Connecting Receptacle
Components:
1. Shell
2. Insert Assembly, Socket
3. Contact, Socket
4. Spacer Assembly, Socket
5. Back Adapter
6. Gland Washer
7. Gland
8. Cable Grip
9. Gland Nut
10. Lockwasher (3 each)
11. Screw (3 each)
12. Protective Cap Assembly
(not shown)
Wall Mount Plug Components:
1. Shell & Coupling Nut
Assembly
2. Insert Assembly, Socket
3. Contact, Pin
4. Grommet Assembly, Pin
5. Nut, Retaining
6. Protective Cap Assembly
(not shown)
7. Flange Gasket (not shown)
477
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Class L Back-
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MIL-DTL-22992, Class L
Installation Instructions, cont.
Contact
Part Number Size Type Crimping
Tool* Locator* Die* Removal
Tool
M39029/48-327
M39029/49-335
M39029/48-328
4/0
4/0
4/0N
P
S
P
Pico Model 400B
or
400B-1
4297-1 414DA-4/0N-1 MS90562-1
M39029/48-323
M39029/49-333
M39029/48-324
1/0
1/0
1/0N
P
S
P
Pico Model 400B
or
400B-1
4297-3 414DA-1/0N MS90562-3
M39029/48-320
M39029/49-331
M39029/48-321
M39029/48-322
M39029/49-332
4
4
4N
4G
4G
P
S
P
P
S
Pico Model 400B
or
400B-1
4297-5 414DA-4N MS90562-5
M39029/48-317
M39029/49-329
M39029/48-318
M39029/48-319
M39029/49-330
6
6
6N
6G
6G
P
S
P
P
S
Pico Model 400B
or
400B-1
4297-6 414DA-6N MS90562-6
* Available from Pico Crimping Tools Co.,
9832 Jersey Ave., Santa Fe Springs, Ca
90670
Phone: 805-388-5510
Order MS90562 contact Removal Tool by MS part
number listed below:
MS Part
Number
Contact
Size
A Dia.
+.000
–.002
M81969/27-01 4/0 .790
M81969/27-02 2/0 .696
M81969/27-03 1/0 .558
M81969/27-04 2.462
M81969/27-05 4.376
M81969/27-06 6.354
MS90562 Contact Removal Tool
A
2.500 ±.016
All dimensions for reference only.
Contact Removal
Step 1) Loosen all rear accessories and slide back along cable.
Step 2) Remove spacer or grommet assembly with contacts
from connector insert.
Step 3) Using the appropriate size contact removal tool, push
tool over front of contact until it bottoms in spacer or
grommet assembly hole. This will open contact retaining
bushing and allow contact to be removed from the
spacer or grommet assembly from the rear. When using
jacketed cable, all contacts should be released from
contact retention bushings before removal from spacer
or grommet assembly is accomplished.
Connector Assembly
Step 1) If inserts are not already positioned in the
connector shell, align large tab on insert with
large slot in shell and push insert in until it
bottoms in shell.
Step 2) Apply a thin coating of Dow Corning DC-4
lubricant to the periphery of contact holes in
spacer or grommet assembly. Push contacts into
rear of spacer or grommet assembly until locked
into contact retainer bushing.
Step 3) Align contacts with proper holes in insert. Small
key of insert must be aligned with appropriate
keyway in spacer or grommet assembly. Slide
contacts into insert holes until spacer or grommet
assembly butts against insert. A thin lm of Dow
Corning DC-4 lubricant applied to the periphery
of insert contact holes will provide maximum
sealing efciency.
Step 4) Assemble accessories to connector. The back
adapter “O” ring should have a very thin lm of
Dow Corning DC-4 lubricant applied. Outer
surfaces only of gland should be lubricated with a
thin lm of UniTemp Grease EP. Avoid getting
grease on inside surfaces of gland and on cable
jacket.
Step 5) Tighten retaining nut or gland nut on shell or
adapter. A metal-to-metal seating condition is
desirable, but may not be attainable with
maximum cable diameters.
If crimping tools are available, contacts may be
afxed to conductors by soldering. Use rosin-alcohol
solder ux, a good grade of 60/40 solder and a 500
watt soldering iron or probe type resistance
soldering equipment. Pre-tin conductors before
soldering. Solder must not be present on shoulder or
retention area of contact.
Contact Installation
Step 1) Insert stripped conductors in contact wirewells. If contact bushing is used, insert
conductor in bushing and bushing in contact wirewell. If two or more ground wires
are inserted into a single contact, make sure all wires are fully seated in wirewell.
Step 2) Select correct crimping tool, locator and die combination from the table for contacts
to be installed. With conductor or contact bushing in place, insert contact into tool.
Close crimping die fully to form a uniform crimp.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Amphenol:
MS90555C32412S MS90557C44412S MS90558C44412P MS90557C44413S MS90556C44412P
MS90555C44150S MS90558C32412P MS90556C32412P MS90557C52612S MS90557C32404S
MS90555C28412S MS90557C52412S MS90557C28412S MS90557C32-412S MS90556C52412 MS90555C52412S
MS90557C28413SY MS90558C52513P MS90558C52412P MS90556C44413P MS90556C44152P
MS90555C28413S MS90558C52612P