NSN 5925-01-149-6957
Overload Switch
Multipole-single actuator type body style, metal case material, at 3 oclock and at 9 oclock nonturn device location, fragility factor: moderately rugged.
Manufacturer part number AP-12-1-72-1251 for national stock number 5925011496957.
Datasheet
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Product description
Circuit Breaker NSN 5925-01-149-6957.
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MPN or Model
AP-12-1-72-1251
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Schedule B
8536.20.0040 (Automatic circuit breakers, for a voltage not exceeding 1, 000 v, nesoi) -
NMF (National Motor Freight)
061300 - Circuit Breaker/switch NOI -
Unit Weight (Est.)
0.1 lb -
Body Style
Multipole-single actuator type -
Bushing Length
0.380 inches -
Body Length
1.500 inches -
Body Width
1.250 inches -
Case Material
Metal -
Center To Center Distance Between Terminals Parallel To Length
Between 0.844 inches and 0.906 inches -
Center To Center Distance Between Terminals Parallel To Width
Between 0.594 inches and 0.656 inches -
Nonturn Device Location
At 3 oclock and at 9 oclock -
Nonturn Device Radius
Between 0.594 inches and 0.656 inches -
Nonturn Device Length
Between 0.063 inches and 0.125 inches -
Nonturn Device Diameter
Between 0.109 inches and 0.171 inches -
Fragility Factor
Moderately rugged -
Mounting Surface To Terminal End Distance
1.780 inches -
Pole Quantity
2 -
Arc Quenching Method
Magnetic blowout -
Mounting Facility Type And Quantity
1 threaded bushing w/panel seal -
Storage Type
General purpose warehouse -
Special Handling Feature
Magnetic -
Thready Qty Per Inch (tpi)
32 -
Maximum Continuous Load Current Rating Per Pole
1.25 amperes ac all locations -
Operating Voltage Type And Rating Per Pole In Volts
240.0 ac all locations -
Maximum Interrupting Capacity Current Type And Rating Per Pole In Amps
1000.0 ac 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
150.0 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
Between pole one and two -
Internal Trip Release Configuration
Series trip all locations -
Thread Size
0.375 inches -
Trip Delay Time In Seconds Per Rated Continuous Current
0.200 at 200 pct all locations and 6.000 at 200 pct all locations -
Inclosure Protection Type For Which Designed
Hermetically sealed and shock resistant and vibration resistant -
Frequency In Hertz
400.0 all locations -
Thread Series Designator
Unef -
Terminal Type And Quantity
4 wire hook
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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.
![Mechanic Bill explains Overload Switch](/public/images/billy-thinking.png)
Pricing and Availability
Get a quote for 5925-01-149-6957 circuit breakerManufacturer Part Numbers and Alternates
MPN manufacturer part number | Registrant or Supplier |
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AP-12-1-72-1251 | Sensata Technologies Maryland, Inc |
Stock Check
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