The Circuit Breaker, cataloged under National Stock Number 5925-01-466-5148, is classified within Federal Supply Class 5925 (Circuit Breakers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Abb Control Inc. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5925-01-466-5148 |
| Primary Part Number | S271-K0.5 |
| Item Name | Circuit Breaker |
| FSC / FSG | 5925 / 59 — Circuit Breakers |
| Manufacturer | Abb Control Inc |
| Status | ACTIVE |
| Reset Method | MANUAL |
| Operating Voltage Type and Rating Per Pole in Volts | 277.0 AC FIRST LOCATION |
| Mounting Facility Type and Quantity | 1 CLIP |
| Frequency in Hertz | 50.0 OR 60.0 FIRST LOCATION |
| Body Style | SINGLE POLE TYPE |
| Circuit Protection Type | OVERVOLTAGE FIRST LOCATION |
| Pole Quantity | 1 |
| Maximum Continuous Load Current Rating Per Pole | 0.5 AMPERES AC FIRST 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 |
|---|---|
| S271-K0.5 PRIMARY | Abb Control Inc (USA) |
| Reference | Meaning |
|---|---|
| S271-K0.5 | 5/9 Secondary reference Abb Inc. Div Substation Automation & Protection |
NSN 5925-01-466-5148 is a Circuit Breaker, manufactured by Abb Control Inc, classified under FSC 5925, Circuit Breakers. Status: active.
NSN 5925-01-466-5148 has 1 manufacturer part number on file: S271-K0.5 (Abb Control Inc).
Key specifications for S271-K0.5: Reset Method: MANUAL; Operating Voltage Type and Rating Per Pole in Volts: 277.0 AC FIRST LOCATION; Mounting Facility Type and Quantity: 1 CLIP; Frequency in Hertz: 50.0 OR 60.0 FIRST LOCATION. 8 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.