The Fuse,cartridge, cataloged under National Stock Number 5920-01-381-7691, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Cooper Bussmann, Llc Dba Cooper Industries. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-381-7691 |
| Primary Part Number | TR/AC1-4 |
| Item Name | Fuse,cartridge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Cooper Bussmann, Llc Dba Cooper Industries |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 0.250 |
| Terminal Diameter | 0.025 INCHES NOMINAL IN |
| Body Style | PIGTAIL TYPE |
| Overall Diameter | 0.095 INCHES NOMINAL IN |
| Terminal Length | 1.200 INCHES NOMINAL IN |
| Interruption Indicator Method | CERAMIC SHELL BREAKS |
| Features Provided | NONRENEWABLE FUSIBLE ELEMENT |
| Surface Treatment | COPPER ALLOY TERMINAL |
| Maximum Voltage Rating in Volts | 125.0 AC |
| Circuit Over-Current Interruption Type | DELAY TIME |
| 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 |
|---|---|
| TR/AC1-4 | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| R255.250-T | Littelfuse, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 806737 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5920-01-381-7691 is a Fuse,cartridge, manufactured by Cooper Bussmann, Llc Dba Cooper Industries, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-381-7691 has 2 manufacturer part numbers on file: TR/AC1-4 (Cooper Bussmann, Llc Dba Cooper Industries), R255.250-T (Littelfuse, Inc.).
Key specifications for TR/AC1-4: Continuous Current Rating in Amps: 0.250; Terminal Diameter: 0.025 INCHES NOMINAL IN; Body Style: PIGTAIL TYPE; Overall Diameter: 0.095 INCHES NOMINAL IN. 10 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.