The Fuse,cartridge, cataloged under National Stock Number 5920-01-503-4237, 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 Power Systems, Inc. Dba Cooper Power Systems, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-503-4237 |
| Primary Part Number | FA1B1 |
| Item Name | Fuse,cartridge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Cooper Power Systems, Inc. Dba Cooper Power Systems, Inc. |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 200.000 |
| Body Style | HOLE TYPE |
| Overall Diameter | 1.375 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 12.563 INCHES NOMINAL IN |
| Interruption Indicator Method | OPAQUE BODY |
| Features Provided | NONRENEWABLE FUSIBLE ELEMENT |
| Maximum Voltage Rating in Volts | 8300.0 AC |
| Circuit Over-Current Interruption Type | NORMAL INSTANTANEOUS |
| 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 |
|---|---|
| FA1B1 | Cooper Power Systems, Inc. Dba Cooper Power Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| FA1B1 | 5/9 Secondary reference U.S. Government activity |
| FA1B1 | 3/9 Design control — primary reference Cooper Power Systems |
NSN 5920-01-503-4237 is a Fuse,cartridge, manufactured by Cooper Power Systems, Inc. Dba Cooper Power Systems, Inc., classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-503-4237 has 1 manufacturer part number on file: FA1B1 (Cooper Power Systems, Inc. Dba Cooper Power Systems, Inc.).
Key specifications for FA1B1: Continuous Current Rating in Amps: 200.000; Body Style: HOLE TYPE; Overall Diameter: 1.375 INCHES NOMINAL IN; Center to Center Distance Between Mounting Facilities Parallel to Length: 12.563 INCHES NOMINAL IN. 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.