The Circuit Breaker, cataloged under National Stock Number 5925-00-948-0053, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is The Entwistle Company Llc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-948-0053 |
| Primary Part Number | 413927-1 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | The Entwistle Company Llc |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 480.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| Actuator Position Designation | BETWEEN POLE ONE AND TWO |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Center to Center Distance Between Terminals Parallel to Width | 1.375 INCHES NOMINAL IN |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | MULTIPOLE-SINGLE ACTUATOR TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 125.0 ALL LOCATIONS |
| Arc Quenching Method | MAGNETIC BLOWOUT |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Body Width | 2.750 INCHES NOMINAL IN |
| Body Height | 3.375 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Unthreaded Mounting Hole Diameter | 0.190 INCHES NOMINAL IN |
| Pole Quantity | 2 |
| Maximum Continuous Load Current Rating Per Pole | 70.0 AMPERES AC ALL LOCATIONS |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 15000.0 AC ALL LOCATIONS |
| Body Length | 6.000 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 55.000 MINIMUM AT 200 PCT AND 120.000 MAXIMUM AT 200 PCT ALL LOCATIONS |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 4 COMPRESSION |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Boss Height | 0.125 INCHES NOMINAL IN |
| Trip Release Method | THERMAL-MAGNETIC ALL LOCATIONS |
| 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 |
|---|---|
| 413927-1 | The Entwistle Company Llc (USA) |
| 413927-1 | U.s.a. Spares Inc. (USA) |
| 413927-1 | Wellman Dynamics Machining and Assembly, Inc. (USA) |
| 413927-1 | Honematic Machine Corporation Dba Pcx Aerosystems - Boylston Div Pcx Aerosystems - Boylston (USA) |
| Reference | Meaning |
|---|---|
| 413927-1 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
| S451D855G06 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| EHB2070V | 3/2 Design control — primary reference U.S. Government activity |
| EHB2070V | C/1 Advisory reference — outside the item-of-supply concept Westinghouse Electric Corp Control Business Unit |
| EH2070V | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
NSN 5925-00-948-0053 is a Circuit Breaker, manufactured by The Entwistle Company Llc, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-948-0053 has 4 manufacturer part numbers on file: 413927-1 (The Entwistle Company Llc), 413927-1 (U.s.a. Spares Inc.), 413927-1 (Wellman Dynamics Machining and Assembly, Inc.), 413927-1 (Honematic Machine Corporation Dba Pcx Aerosystems - Boylston Div Pcx Aerosystems - Boylston).
2 possible matches (shared part number, not a government interchangeability claim): 1720-00-948-0533, 5935-00-972-9288. Verify interchangeability with system specifications before substitution.
Key specifications for 413927-1: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 480.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Actuator Position Designation: BETWEEN POLE ONE AND TWO. 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.