Model: 401A251

Circuit Breaker

Properties:

Thread Pitch Diameters
+0.3503/+0.3537 inches
Body Style
Single pole type
Bushing Length
Between 0.360 inches and 0.380 inches
Body Length
Between 1.448 inches and 1.510 inches
Body Width
Between 0.567 inches and 0.629 inches
Case Material
Metal
Center To Center Distance Between Terminals Parallel To Length
Between 0.870 inches and 0.880 inches
Fragility Factor
Moderately rugged
Mounting Surface To Terminal End Distance
Between 1.524 inches and 1.586 inches
Pole Quantity
1
Arc Quenching Method
Magnetic blowout
Mounting Facility Type And Quantity
1 threaded bushing w/panel seal
Storage Type
General purpose warehouse
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
250.0 amperes dc single location
Operating Voltage Type And Rating Per Pole In Volts
240.0 ac single location and 32.0 dc single location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
1000.0 ac single location and 1000.0 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
115.0 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
0.375 inches
Trip Delay Time In Seconds Per Rated Continuous Current
0.140 at 300 pct single location and 0.080 at 400 pct single location
Inclosure Protection Type For Which Designed
Shockproof and vibrationproof and hermetically sealed
Frequency In Hertz
60.0 single location
Thread Series Designator
Unef
Terminal Type And Quantity
2 wire hook
NSN
5925-00-615-8376
Part Number
401A251
Description
Circuit Breaker
CAGE
81541

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 401A251 NSN 5925-00-615-8376

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
061300
UFC:
34410
LTL:
77.5
LCL:
77.5
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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