The Tripper,circuit Breaker, cataloged under National Stock Number 5925-00-628-7771, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-00-628-7771 |
| Primary Part Number | ETN5252 |
| Item Name | Tripper,circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
| Status | ACTIVE |
| Operating Voltage Type and Rating Per Pole in Volts | 500.0 AC ALL LOCATIONS |
| Mounting Facility Type and Quantity | 6 UNTHREADED HOLE(S)6 UNTHREADED HOLE(S) |
| Frequency in Hertz | 60.0 ALL LOCATIONS |
| Body Style | RECTANGULAR DIMENSIONAL ENVELOPERECTANGULAR DIMENSIONAL ENVELOPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 105.0 ALL LOCATIONS |
| Adjustable Trip Setting Current Range Per Pole in Amps | +900.0 TO 1050.0 AC ALL LOCATIONS |
| Circuit Protection Type | OVERCURRENT ALL LOCATIONS |
| Unthreaded Mounting Hole Diameter | 0.312 INCHES MINIMUM AND 0.312 INCHES MINIMUM AND 0.375 INCHES MAXIMUM0.375 INCHES MAXIMUM IN |
| Pole Quantity | 33 |
| Maximum Continuous Load Current Rating Per Pole | 75.0 AMPERES AC ALL LOCATIONS |
| Features Provided | ADJUSTABLE TRIP RELEASEADJUSTABLE TRIP RELEASE |
| Trip Release Characteristic | INSTANTANEOUS AND TIME DELAY ALL LOCATIONS |
| Trip Delay Time in Seconds Per Rated Continuous Current | 25.000 NOMINAL AT 600 PCT ALL LOCATIONS |
| Trip Release Ambient Temp Rating | 50.0 CELSIUS NOMINAL ALL LOCATIONS DEGC |
| Terminal Type and Quantity | 6 SCREW |
| 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 |
|---|---|
| ETN5252 PRIMARY | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
| 976-1-1X21PC1C | Eaton Corp Opns & Technical Center (USA) |
NSN 5925-00-628-7771 is a Tripper,circuit Breaker, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-00-628-7771 has 2 manufacturer part numbers on file: ETN5252 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 976-1-1X21PC1C (Eaton Corp Opns & Technical Center).
Key specifications for ETN5252: Operating Voltage Type and Rating Per Pole in Volts: 500.0 AC ALL LOCATIONS; Mounting Facility Type and Quantity: 6 UNTHREADED HOLE(S)6 UNTHREADED HOLE(S); Overall Height: 3.875 INCHES NOMINAL3.875 INCHES NOMINAL IN; Frequency in Hertz: 60.0 ALL LOCATIONS. 16 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.