The Circuit Breaker, cataloged under National Stock Number 5925-01-044-3990, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5925-01-044-3990 |
| Primary Part Number | GC855EC1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bushing Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP ALL LOCATIONS |
| Operating Voltage Type and Rating Per Pole in Volts | 250.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING |
| Actuator Position Designation | AT POLE TWO |
| Switch Terminal Type | TAB, SOLDER LUG |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Switch Voltage Rating and Type in Volts | 125.0 AC AND 50.0 DC |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 115.0 ALL LOCATIONS |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Switch Location and Position Designation | INTERNAL AT POLE THREE |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 1.844 INCHES MINIMUM AND 1.906 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 3 |
| Mounting Surface to Terminal End Distance | 1.690 INCHES MINIMUM AND 1.710 INCHES MAXIMUM IN |
| Thread Pitch Diameters | +0.3503 TO 0.3537 INCHES IN |
| Maximum Continuous Load Current Rating Per Pole | 3.0 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 | 1.552 INCHES MINIMUM AND 1.572 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.500 MINIMUM AT 200 PCT AND 4.500 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Switch Current Rating and Type in Amps | 1.0 AC AND 0.5 DC |
| Inclosure Protection Type for Which Designed | MOISTURE RESISTANT AND HERMETICALLY SEALED |
| 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 |
|---|---|
| GC855EC1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GC885EC1 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| HE3-Z83-1 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
| AP112-4341-1 | 5/2 Secondary reference U.S. Government activity |
| AP112-1R-4341-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-044-3990 is a Circuit Breaker, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-044-3990 has 2 manufacturer part numbers on file: GC855EC1 (Northrop Grumman Systems Corporation), GC885EC1 (Northrop Grumman Systems Corporation).
Key specifications for GC855EC1: Bushing Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP ALL LOCATIONS; Operating Voltage Type and Rating Per Pole in Volts: 250.0 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.