The Circuit Breaker, cataloged under National Stock Number 5925-01-142-4479, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-142-4479 |
| Primary Part Number | 788C417H21 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Bushing Length | 0.390 INCHES MAXIMUM IN |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Actuator Position Designation | BETWEEN POLE ONE AND TWO |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 0.656 INCHES NOMINAL IN |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 115.0 ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.281 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 2 |
| Mounting Surface to Terminal End Distance | 1.828 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 2.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 300.0 AC ALL LOCATIONS |
| Nominal Thread Size | 0.375 INCHES IN |
| Body Length | 1.562 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.800 MINIMUM AT 200 PCT AND 4.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | MOISTURE RESISTANT AND EXPLOSION PROOF |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 4 WIRE HOOK |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNEF |
| Trip Release Method | MAGNETIC ALL LOCATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 788C417H21 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| AP12-10AB | 5/2 Secondary reference U.S. Government activity |
| 788C417H21 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5925-01-142-4479 is a Circuit Breaker, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-142-4479 has 1 manufacturer part number on file: 788C417H21 (Northrop Grumman Support Services Corp).
Key specifications for 788C417H21: Bushing Length: 0.390 INCHES MAXIMUM IN; Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC ALL LOCATIONS. 30 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.