The Circuit Breaker, cataloged under National Stock Number 5925-01-372-4733, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-372-4733 |
| Primary Part Number | 6509903-1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 | 6 THREADED HOLE(S) |
| Actuator Position Designation | AT EACH POLE |
| Frequency in Hertz | 400.0 ALL LOCATIONS |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 150.0 ALL LOCATIONS |
| External Actuator Linkage Arrangement | ONE, TWO, AND THREE LINKED |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 2.062 INCHES NOMINAL IN |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 2.250 INCHES NOMINAL IN |
| Pole Quantity | 3 |
| Mounting Surface to Terminal End Distance | 2.611 INCHES NOMINAL 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 | 1000.0 AC ALL LOCATIONS |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 2.500 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 2.000 MINIMUM AT 200 PCT AND 20.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 3 TOGGLE |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 6 THREADED STUD |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Boss Height | 0.150 INCHES NOMINAL IN |
| Trip Release Method | MAGNETIC ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Length | 1.938 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 |
|---|---|
| 6509903-1 PRIMARY | Naval Sea Systems Command (USA) |
| AM3R-C2-LC07D-A-3-2 | Heinemann Electric Canada Incdivision of Eaton Corp (CAN) |
| Reference | Meaning |
|---|---|
| AM3-C1-A-3-2 | 5/9 Secondary reference Eaton Corp Heinemann Products Commercial Controls Div |
NSN 5925-01-372-4733 is a Circuit Breaker, manufactured by Naval Sea Systems Command, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-372-4733 has 2 manufacturer part numbers on file: 6509903-1 (Naval Sea Systems Command), AM3R-C2-LC07D-A-3-2 (Heinemann Electric Canada Incdivision of Eaton Corp).
Key specifications for 6509903-1: 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: 6 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.