The Circuit Breaker, cataloged under National Stock Number 5925-01-277-1980, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-277-1980 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Status | ACTIVE |
| Bushing Length | 0.380 INCHES MAXIMUM IN |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC AND 50.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Frequency in Hertz | 60.0 OR 400.0 SINGLE LOCATION |
| Pole Quantity | 1 |
| Maximum Continuous Load Current Rating Per Pole | 500.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.400 MINIMUM AT 125 PCT AND 4.000 MAXIMUM AT 125 PCT AND 0.060 MINIMUM AT 200 PCT AND 0.600 MAXIMUM AT 200 PCT AND 0.010 MINIMUM AT 400 PCT AND 0.200 MAXIMUM AT 400 PCT AND 0.005 MINIMUM AT 800 PCT AND 0.035 MAXIMUM AT 800 PCT SINGLE LOCATION |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| Center to Center Distance Between Terminals Parallel to Length | 0.875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AP-1-1-51-501 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5925-01-277-1980 is a Circuit Breaker, classified under FSC 5925, Circuit Breakers. Status: active.
Key specifications for 5925-01-277-1980: Bushing Length: 0.380 INCHES MAXIMUM IN; Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC AND 50.0 DC SINGLE LOCATION; Mounting Facility Type and Quantity: 1 THREADED BUSHING. 12 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.