The Fuse,indicator Alarm, cataloged under National Stock Number 5920-00-221-4543, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-221-4543 |
| Item Name | Fuse,indicator Alarm |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 1.000 |
| Interruption Indicator Method | COLORED BEAD SNAPS UP |
| Maximum Voltage Rating in Volts | 48.0 AC AND 48.0 DC |
| Material | FIBER CASE |
| 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 |
| Reference | Meaning |
|---|---|
| D2742 | 3/9 Design control — primary reference Gte Communication Systems Corp |
NSN 5920-00-221-4543 is a Fuse,indicator Alarm, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6130-01-423-8874. Verify interchangeability with system specifications before substitution.
Key specifications for 5920-00-221-4543: Continuous Current Rating in Amps: 1.000; Interruption Indicator Method: COLORED BEAD SNAPS UP; Maximum Voltage Rating in Volts: 48.0 AC AND 48.0 DC; Material: FIBER CASE. 5 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.