The Circuit Breaker, cataloged under National Stock Number 5925-00-300-8984, is classified within Federal Supply Class 5925 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Fabco Generators, Inc. Dba Fabco Power. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5925-00-300-8984 |
| Primary Part Number | J40-920A |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — No Item Name Available |
| Manufacturer | Fabco Generators, Inc. Dba Fabco Power |
| Status | CANCELLED |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 SINGLE LOCATION |
| Terminal Type and Quantity | 2 SCREW |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Trip Release Method | MAGNETIC-HYDRAULIC SINGLE LOCATION |
| Actuator Position Designation | AT POLE ONE |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Material | PLASTIC CASE |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 1.310 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Fragility Factor | MODERATELY RUGGED |
| Center to Center Distance Between Terminals Parallel to Length | 2.750 INCHES NOMINAL IN |
| Boss Height | 0.120 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Mounting Facility Type and Quantity | 2 SLOT |
| Special Handling Feature | MAGNETIC |
| Trip Release Characteristic | INSTANTANEOUS SINGLE LOCATION |
| Body Height | 2.656 INCHES NOMINAL IN |
| Body Style | SINGLE POLE TYPE |
| Operating Voltage Type and Rating Per Pole in Volts | 50.0 DC SINGLE LOCATION |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT |
| Body Length | 3.190 INCHES NOMINAL IN |
| Reset Method | MANUAL |
| Body Width | 1.469 INCHES NOMINAL IN |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 300.0 DC SINGLE LOCATION |
| Actuator Function | TRIP-RESET |
| Mounting Slot Width | 0.164 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| J40-920A | Fabco Generators, Inc. Dba Fabco Power (USA) |
| 8131RT | Eaton Corp Heinemann Products Commercial Controls Div (USA) |
| 40-920A | Eaton Corp Heinemann Products Commercial Controls Div (USA) |
| 19012 | Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA) |
NSN 5925-00-300-8984 is a Circuit Breaker, manufactured by Fabco Generators, Inc. Dba Fabco Power, classified under FSC 5925 (No Item Name Available). Status: cancelled.
NSN 5925-00-300-8984 has 4 cross-referenced part numbers: J40-920A (Fabco Generators, Inc. Dba Fabco Power), 8131RT (Eaton Corp Heinemann Products Commercial Controls Div), 40-920A (Eaton Corp Heinemann Products Commercial Controls Div), 19012 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc).
There are 10 known substitutes for 5925-00-300-8984: 5331-00-330-3307, 5962-00-523-7956, 6145-00-679-0132 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for J40-920A: Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent: 125.0 SINGLE LOCATION; Terminal Type and Quantity: 2 SCREW; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Trip Release Method: MAGNETIC-HYDRAULIC SINGLE LOCATION. 29 total characteristics are documented in the Federal Logistics Information System.
NSN 5925-00-300-8984 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.