The Circuit Breaker, cataloged under National Stock Number 5925-01-157-9950, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-157-9950 |
| Primary Part Number | 77C718000P003 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SHUNT TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 50.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) |
| Actuator Position Designation | AT POLE ONE |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 150.0 SINGLE LOCATION |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 1.660 INCHES NOMINAL IN |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 0.750 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 2.032 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 50.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | INSTANTANEOUS SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 1000.0 DC SINGLE LOCATION |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 2.000 INCHES NOMINAL IN |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 3 TAB W/SCREW |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Boss Height | 0.130 INCHES NOMINAL IN |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| Center to Center Distance Between Terminals Parallel to Length | 1.530 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 |
| Part Number | Manufacturer |
|---|---|
| 77C718000P003 | Lockheed Martin Corporation Div Rms (USA) |
| 77C718000P3 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| UPG-7332-3 | 5/9 Secondary reference U.S. Government activity |
| IAG7402973 | 3/2 Design control — primary reference U.S. Government activity |
| APG7-7332-3 | 5/9 Secondary reference U.S. Government activity |
NSN 5925-01-157-9950 is a Circuit Breaker, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-157-9950 has 2 manufacturer part numbers on file: 77C718000P003 (Lockheed Martin Corporation Div Rms), 77C718000P3 (Lockheed Martin Corporation Div Rms).
Key specifications for 77C718000P003: Reset Method: MANUAL; Internal Trip Release Configuration: SHUNT TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 50.0 DC SINGLE LOCATION; Mounting Facility Type and Quantity: 2 THREADED HOLE(S). 29 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.