The Circuit Breaker, cataloged under National Stock Number 5925-00-731-7477, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5925-00-731-7477 |
| Primary Part Number | GC20C-5R00 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bushing Length | 0.250 INCHES MAXIMUM IN |
| Reset Method | ELECTRIC |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 120.0 AC AND 28.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Actuator Position Designation | AT POLE ONE |
| Frequency in Hertz | 400.0 SINGLE LOCATION |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 138.0 SINGLE LOCATION |
| Precious Material | SILVER |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 0.750 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 1.812 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 5.0 AMPERES AC AND 5.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 5000.0 AC AND 5000.0 DC SINGLE LOCATION |
| Nominal Thread Size | 0.469 INCHES IN |
| Body Length | 1.137 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.400 MINIMUM AT 200 PCT AND 3.000 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Manual Actuator Type and Quantity | 1 PUSH-PULL |
| Inclosure Protection Type for Which Designed | EXPLOSION PROOF |
| Precious Material and Location | TERMINAL SURFACES SILVER |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP W/SEPARATE RESET |
| Trip Release Ambient Temp Rating | 25.0 CELSIUS NOMINAL SINGLE LOCATION DEGC |
| Terminal Type and Quantity | 2 TAB W/SCREW |
| 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 |
|---|---|
| GC20C-5R00 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1500-041-5 | 5/2 Secondary reference U.S. Government activity |
| GC20C5 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5925-00-731-7477 is a Circuit Breaker, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-731-7477 has 1 manufacturer part number on file: GC20C-5R00 (Northrop Grumman Systems Corporation).
Key specifications for GC20C-5R00: Bushing Length: 0.250 INCHES MAXIMUM IN; Reset Method: ELECTRIC; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 120.0 AC AND 28.0 DC SINGLE LOCATION. 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.