Model: M39019/5-257

Circuit Breaker

Special Features:

Max resistance at 60 hz is 0.006; max resistance at 400 hz is 0.007

Properties:

Body Style
Multipole-single actuator type
Bushing Length
Between 0.332 inches and 0.380 inches
Body Length
Between 1.531 inches and 1.562 inches
Body Width
Between 1.906 inches and 1.937 inches
Case Material
Metal
Center To Center Distance Between Terminals Parallel To Length
Between 0.875 inches and 0.906 inches
Center To Center Distance Between Terminals Parallel To Width
Between 0.594 inches and 0.656 inches
Fragility Factor
Moderately rugged
Mounting Surface To Terminal End Distance
Between 1.797 inches and 1.828 inches
Pole Quantity
3
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
20.0 amperes ac all locations and 20.0 amperes dc all locations
Operating Voltage Type And Rating Per Pole In Volts
240.0 ac first location
Operating Voltage Type And Rating Per Pole In Volts
240.0 ac third location
Operating Voltage Type And Rating Per Pole In Volts
50.0 dc second location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
300.0 ac all locations and 500.0 dc all locations
Circuit Protection Type
Overcurrent all locations
Trip Release Method
Magnetic all locations
Trip Release Characteristic
Time delay all locations
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 all locations
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 two
Internal Trip Release Configuration
Series trip all locations
Thread Size
0.375 inches
Trip Delay Time In Seconds Per Rated Continuous Current
0.055 at 200 pct all locations and 0.950 at 200 pct all locations
Inclosure Protection Type For Which Designed
Fungus resistant and hermetically sealed
Frequency In Hertz
400.0 all locations
Unpackaged Unit Weight
150.0 grams
Thread Series Designator
Unef
Terminal Type And Quantity
6 wire hook
NSN
5925-01-541-5457
Part Number
M39019/5-257
Description
Circuit Breaker
CAGE
81349

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 M39019/5-257 NSN 5925-01-541-5457

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:
A
ESD:
A
ESD:
A
MMAC:
CRITL:
X

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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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