Model: 12-187

Circuit Breaker
Description:

Single pole type body style, 5.240 inches body length, 1.490 inches body width, 2.678 inches body height, plastic case material.

Properties:

Body Style
Single pole type
Body Length
Between 5.240 inches and 5.260 inches
Body Width
Between 1.490 inches and 1.510 inches
Body Height
Between 2.678 inches and 2.698 inches
Case Material
Plastic
Center To Center Distance Between Terminals Parallel To Length
Between 4.349 inches and 4.369 inches
Unthreaded Mounting Hole Diameter
0.190 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
Between 4.349 inches and 4.369 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width
Between 0.974 inches and 0.994 inches
Fragility Factor
Moderately rugged
Boss Height
Between 0.208 inches and 0.228 inches
Pole Quantity
1
Arc Quenching Method
Magnetic blowout
Mounting Facility Type And Quantity
4 threaded hole and 4 unthreaded hole
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
50.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts
125.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
5000.0 dc single location
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Magnetic-hydraulic all locations
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
Actuator Position Designation
At pole one
Internal Trip Release Configuration
Series trip single location
Thread Size
0.164 inches
Trip Delay Time In Seconds Per Rated Continuous Current
0.400 at 200 pct single location and 1.000 at 200 pct single location
Inclosure Protection Type For Which Designed
Dustproof and fungus proof
Thread Series Designator
Unc
Terminal Type And Quantity
4 compression
NSN
5925-00-279-6762
Part Number
12-187
Description
Circuit Breaker
CAGE
20950

A device with means other than fuses for automatically opening the circuit in which it is installed when the current varies from the predetermined value for which the device is set. May include provisions for manual operation. At least one set of contacts must be in series with the actuating element(s). A combination of semiconductor and passive devices may be used in lieu of contacts. For automatically operated items in which the actuating (tripping) element and contacts are not in series, see relay (as modified). For items which are operated both manually and automatically but the actuating elements and contact are not in series, see relay-switch. Excludes circuit breaker box and magneto "breaker" assemblies. See also switch (as modified); and controller.

Part 12-187 NSN 5925-00-279-6762

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00136
FIIG:
A030A0
Concept No.:
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
P
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.0000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
--
WCC:
658
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8536200040
  • SITC: 77252
  • End Use: Electric apparatus
  • NAICS: 335313
  • USDA: 1

Freight Class: Automatic circuit breakers, for a voltage not exceeding 1,000 v, nesoi

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