The Circuit Breaker, cataloged under National Stock Number 5925-01-080-1766, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 26 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-080-1766 |
| Primary Part Number | 8455518 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Internal Trip Release Configuration | SERIES TRIP SINGLE LOCATION |
| Operating Voltage Type and Rating Per Pole in Volts | 240.0 AC SINGLE LOCATION |
| Mounting Facility Type and Quantity | 2 TERMINAL |
| Actuator Position Designation | AT POLE ONE |
| Frequency in Hertz | 60.0 SINGLE LOCATION |
| Body Style | SINGLE POLE TYPE |
| Ultimate Trip Rating of Continuous Current Rating Per Pole in Percent | 135.0 SINGLE LOCATION |
| Circuit Protection Type | OVERCURRENT SINGLE LOCATION |
| Body Width | 0.750 INCHES MAXIMUM IN |
| Body Height | 2.310 INCHES NOMINAL IN |
| Storage Type | GENERAL PURPOSE WAREHOUSE |
| Pole Quantity | 1 |
| Maximum Continuous Load Current Rating Per Pole | 20.0 AMPERES AC SINGLE LOCATION |
| Trip Release Characteristic | TIME DELAY SINGLE LOCATION |
| Maximum Interrupting Capacity Current Type and Rating Per Pole in Amps | 10000.0 AC SINGLE LOCATION |
| Body Length | 3.000 INCHES NOMINAL IN |
| Trip Delay Time in Seconds Per Rated Continuous Current | 120.000 MAXIMUM AT 200 PCT SINGLE LOCATION |
| Manual Actuator Type and Quantity | 1 TOGGLE |
| Inclosure Protection Type for Which Designed | FUNGUS RESISTANT |
| Material | PLASTIC CASE |
| Actuator Function | TRIP-RESET |
| Terminal Type and Quantity | 1 CLIP AND 1 BUS BAR |
| Main Contact Tripping Mechanism Type | TRIP FREE |
| Boss Height | 0.250 INCHES NOMINAL IN |
| Trip Release Method | MAGNETIC SINGLE LOCATION |
| 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 |
|---|---|
| QO-120HMS1021 | Square D Co Cedar Rapids Mfg Plant (USA) |
| 8455518 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| Q0-120HM-1021 | 5/9 Secondary reference Schneider Electric Usa, Inc Dba Schneider Electric |
| 3304784-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5925-01-080-1766 is a Circuit Breaker, manufactured by Us Army Aviation and Missile Command, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-080-1766 has 2 manufacturer part numbers on file: QO-120HMS1021 (Square D Co Cedar Rapids Mfg Plant), 8455518 (Us Army Aviation and Missile Command).
Key specifications for 8455518: Reset Method: MANUAL; Internal Trip Release Configuration: SERIES TRIP SINGLE LOCATION; Operating Voltage Type and Rating Per Pole in Volts: 240.0 AC SINGLE LOCATION; Mounting Facility Type and Quantity: 2 TERMINAL. 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.