The Circuit Breaker, cataloged under National Stock Number 5925-01-077-9948, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Heinemann Electric Canada Incdivision of Eaton Corp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-077-9948 |
| Primary Part Number | CD1-B3-DU-W-100-125DC-3 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Heinemann Electric Canada Incdivision of Eaton Corp |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 125.0 DC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 2 THREADED HOLE(S) AND 1 UNTHREADED HOLE(S) AND 1 SLOT |
| Actuator Position Designation | AT POLE ONE |
| Unpackaged Unit Weight | 9.000 OUNCES NOMINAL OZ |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 SINGLE LOCATION |
| Distance Between Centerlines of Mounting Facilities Parallel to Body Length | 4.771 INCHES MINIMUM AND 4.791 INCHES MAXIMUM IN |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 1.016 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.164 INCHES NOMINAL IN |
| Pole Quantity | 1 |
| Mounting Surface to Terminal End Distance | 3.545 INCHES MINIMUM AND 3.565 INCHES MAXIMUM IN |
| Maximum Continuous Load Current Rating Per Pole | 100.0 AMPERES DC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 5000.0 DC SINGLE LOCATION |
| Nominal Thread Size | 0.138 INCHES IN |
| Body Length | 5.790 INCHES MINIMUM AND 5.810 INCHES MAXIMUM IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 0.150 MINIMUM AT 200 PCT AND 0.500 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT AND MOISTURE RESISTANT |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 2 THREADED STUD |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| 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 |
|---|---|
| CD1-B3-DU-W-100-125DC-3 | Heinemann Electric Canada Incdivision of Eaton Corp (CAN) |
| Reference | Meaning |
|---|---|
| CD-1-B3-DU-100-125-3 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corp Heinemann Products Commercial Controls Div |
| CD1-B3-100-125-3 | 3/9 Design control — primary reference Eaton Corp Heinemann Products Commercial Controls Div |
| CD1-BC-100-3 | C/1 Advisory reference — outside the item-of-supply concept Eaton Corp Heinemann Products Commercial Controls Div |
NSN 5925-01-077-9948 is a Circuit Breaker, manufactured by Heinemann Electric Canada Incdivision of Eaton Corp, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-077-9948 has 1 manufacturer part number on file: CD1-B3-DU-W-100-125DC-3 (Heinemann Electric Canada Incdivision of Eaton Corp).
Key specifications for CD1-B3-DU-W-100-125DC-3: Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 125.0 DC SINGLE LOCATION; Mounting Facility Type and Quantity: 2 THREADED HOLE(S) AND 1 UNTHREADED HOLE(S) AND 1 SLOT. 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.