The Circuit Breaker, cataloged under National Stock Number 5925-01-596-0304, 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 Dba Electronic Systems. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-596-0304 |
| Primary Part Number | MSSA609000H65 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| Bushing Length | 0.240 INCHES NOMINAL IN |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP W/AUXILIARY LOAD TERMINAL SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 80.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 1 THREADED BUSHING WITH PANEL SEAL |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 1000.0 SINGLE LOCATION |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 0.750 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 2.075 INCHES NOMINAL IN |
| Maximum Continuous Load Current Rating Per Pole | 4.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 50.0 DC SINGLE LOCATION |
| Nominal Thread Size | 0.500 INCHES IN |
| Body Length | 2.000 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 1.000 MINIMUM AT 200 PCT AND 10.000 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 2 SCREW |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Thread Series Designator | UN |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| Center to Center Distance Between Terminals Parallel to Length | 1.059 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 |
|---|---|
| MSSA609000H65 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| Reference | Meaning |
|---|---|
| IUGN6-1REC4-51-4.00 | 5/2 Secondary reference U.S. Government activity |
NSN 5925-01-596-0304 is a Circuit Breaker, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-596-0304 has 1 manufacturer part number on file: MSSA609000H65 (Northrop Grumman Systems Corporation Dba Electronic Systems).
Key specifications for MSSA609000H65: Bushing Length: 0.240 INCHES NOMINAL IN; Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP W/AUXILIARY LOAD TERMINAL SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 80.0 DC SINGLE LOCATION. 26 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.