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Circuit Breaker

Model / MPN: SM-A-742930-1 | NSN: 5925-00-140-2358
ITAR Registered seal

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 elemen (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.

Product Details
NATO Stock Number
5925-00-140-2358
Sold in multiples of
1 EA
DEMIL
NO
Body Style
Multipole-multiple actuator type
Mounting Slot Width
0.164 inches
Body Length
5.844 inches
Body Width
3.096 inches
Case Material
Plastic
Center To Center Distance Between Terminals Parallel To Length
3.546 inches
Center To Center Distance Between Terminals Parallel To Width
1.032 inches
Distance Between Centerlines Of Mounting Facilities Parallel To Body Length
2.750 inches
Switch Contact Arrangement
Single pole, double throw
Distance Between Centerlines Of Mounting Facilities Parallel To Body Width
1.032 inches
Fragility Factor
Moderately rugged
Boss Height
0.218 inches
Mounting Surface To Terminal End Distance
2.609 inches
Pole Quantity
4
Arc Quenching Method
Magnetic blowout
Mounting Facility Type And Quantity
8 threaded hole and 8 slot
Storage Type
General purpose warehouse
Special Handling Feature
Magnetic
Thready Qty Per Inch (tpi)
32
Maximum Continuous Load Current Rating Per Pole
50.0 amperes dc third location
Maximum Continuous Load Current Rating Per Pole
60.0 amperes dc first location
Maximum Continuous Load Current Rating Per Pole
60.0 amperes dc second location
Operating Voltage Type And Rating Per Pole In Volts
125.0 dc first location
Operating Voltage Type And Rating Per Pole In Volts
125.0 dc second location
Operating Voltage Type And Rating Per Pole In Volts
125.0 dc third location
Operating Voltage Type And Rating Per Pole In Volts
30.0 dc fourth location
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
5000.0 dc all locations
Circuit Protection Type
Overcurrent first location
Circuit Protection Type
Overvoltage fourth location
Circuit Protection Type
Overcurrent second location
Circuit Protection Type
Overcurrent third location
Trip Release Method
Magnetic all locations
Trip Release Characteristic
Instantaneous fourth location
Trip Release Characteristic
Time delay second location
Trip Release Characteristic
Time delay third location
Trip Release Characteristic
Time delay first location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 first location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 second location
Ultimate Trip Rating Of Continuous Current Rating Per Pole In Percent
125.0 third location
Reset Method
Manual
Main Contact Tripping Mechanism Type
Trip free
Manual Actuator Type And Quantity
4 toggle
Actuator Function
Trip-reset
Actuator Position Designation
At each pole
External Actuator Linkage Arrangement
One, two, three, and four linked
Auxiliary Switch Function And Quantity
1 alarm
Internal Trip Release Configuration
Series trip first location
Internal Trip Release Configuration
Relay trip fourth location
Internal Trip Release Configuration
Series trip second location
Internal Trip Release Configuration
Series trip third location
Thread Size
0.138 inches
Switch Location And Position Designation
Internal at pole four
Trip Delay Time In Seconds Per Rated Continuous Current
45.000 at 200 pct second location and 100.000 at 200 pct second location
Trip Delay Time In Seconds Per Rated Continuous Current
45.000 at 200 pct third location and 100.000 at 200 pct third location
Trip Delay Time In Seconds Per Rated Continuous Current
45.000 at 200 pct first location and 100.000 at 200 pct first location
Inclosure Protection Type For Which Designed
Fungus resistant and moisture resistant
Switch Terminal Type
Pin
Switch Current Rating And Type In Amps
5.0 ac
Switch Voltage Rating And Type In Volts
125.0 ac
Thread Series Designator
Unc
Terminal Type And Quantity
10 threaded stud

Pricing and Availability

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SM-A-742930-1 Cross Reference
  • CD4-Z34-1