#M556291-078 Motor Circuit Protector | Circuit Breakers

M556291-078

Circuit Breaker

NSN 5925-01-021-7237

DEMIL
Shelf Life
UOM
NIIN
Demil:
NO
Shelf Life:
N/A
UOM:
1 EA
NIIN:
010217237

Detail Specifications

Body Style:
Single pole type
Body Length:
2.510 inches
Body Width:
Between 0.730 inches and 0.780 inches
Case Material:
Plastic
Center To Center Distance Between Terminals Parallel To Length:
Between 1.660 inches and 1.960 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length:
Between 2.046 inches and 2.078 inches
Fragility Factor:
Moderately rugged
Boss Height:
Between 0.109 inches and 0.171 inches
Mounting Surface To Terminal End Distance:
2.553 inches
Pole Quantity:
1
Arc Quenching Method:
Magnetic blowout
Mounting Facility Type And Quantity:
2 threaded hole
Storage Type:
General purpose warehouse
Special Handling Feature:
Magnetic
Thready Qty Per Inch (tpi):
32
Maximum Continuous Load Current Rating Per Pole:
10.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts:
50.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps:
2000.0 dc single location
Circuit Protection Type:
Overcurrent single location
Trip Release Method:
Magnetic single location
Trip Release Characteristic:
Time delay single location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent:
125.0 single location
Reset Method:
Manual
Main Contact Tripping Mechanism Type:
Trip free
Manual Actuator Type And Quantity:
1 toggle
Actuator Function:
Trip-reset
Internal Trip Release Configuration:
Series trip single location
Thread Size:
0.138 inches
Trip Delay Time In Seconds Per Rated Continuous Current:
0.600 at 200 pct single location and 8.000 at 200 pct single location
Inclosure Protection Type For Which Designed:
Moisture resistant and shock resistant and vibration resistant
Test Data Document:
81349-mil-c-55629 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator:
Unc
Terminal Type And Quantity:
2 threaded stud
Specification Data:
81349-mil-c-55629/1 government specification
NSN:
5925-01-021-7237
Item Name:
Motor Circuit Protector
Cage Code:
81349

Manufacturer Part Numbers

Part Number
Cage
RNCC
RNVC
RNAAC
Status
MSDS
SADC
Part Number:
AM10-12
Cage Code:
74193
RNCC:
C
RNVC:
1
RNAAC:
SB
Status:
A
MSDS:
SADC:
AB
Part Number:
JA1-B2-A-10-2
Cage Code:
74193
RNCC:
C
RNVC:
1
RNAAC:
TX
Status:
A
MSDS:
SADC:
AF
Part Number:
AM1-Z21-078
Cage Code:
74193
RNCC:
C
RNVC:
1
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
AC
Part Number:
G612888-2
Cage Code:
06KW9
RNCC:
C
RNVC:
1
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
AC
Part Number:
MIL-PRF-55629/1
Cage Code:
81349
RNCC:
4
RNVC:
1
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
Part Number:
AM1-B3-A-10-2
Cage Code:
82647
RNCC:
C
RNVC:
1
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
AC
Part Number:
10101646-101
Cage Code:
94580
RNCC:
C
RNVC:
1
RNAAC:
TX
Status:
A
MSDS:
SADC:
AF
Part Number:
UPL-1-1-52-103
Cage Code:
81541
RNCC:
C
RNVC:
1
RNAAC:
TX
Status:
A
MSDS:
SADC:
AW
Part Number:
JA1-B2-A-10-2
Cage Code:
81541
RNCC:
C
RNVC:
1
RNAAC:
ZZ
Status:
A
MSDS:
SADC:
AC
Part Number:
7470-0200
Cage Code:
18014
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
131-210-101
Cage Code:
77342
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
10630082-71
Cage Code:
18876
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
AM12-10A28VDC4
Cage Code:
74193
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
AM12MG6-10A50VDCTDC4
Cage Code:
74193
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
131-210-101
Cage Code:
79405
RNCC:
E
RNVC:
8
RNAAC:
TX
Status:
A
MSDS:
SADC:
Part Number:
MIL-C-55629/1
Cage Code:
81349
RNCC:
5
RNVC:
9
RNAAC:
TX
Status:
A
MSDS:
SADC:

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--- Electrical And Electronic Equipment Components
------ Circuit Breakers
--------- Overload Switches
------------ P/N M556291-078

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Last Updated: 08/10/2025