The Fuse,enclosed Link, cataloged under National Stock Number 5920-00-221-4517, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-221-4517 |
| Primary Part Number | WER 3 |
| Item Name | Fuse,enclosed Link |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Cooper Bussmann, Llc Dba Cooper Industries |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 3.000 |
| Body Style | SLOTTED LIMITER |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 0.938 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Interruption Indicator Method | VISIBLE ELEMENT |
| Surface Treatment | SILVER TERMINAL |
| Precious Material and Location | TERMINAL SURFACES SILVER |
| Maximum Voltage Rating in Volts | 32.0 AC AND 32.0 DC |
| Circuit Over-Current Interruption Type | NORMAL INSTANTANEOUS |
| Mounting Slot Width | 0.200 INCHES NOMINAL IN |
| 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 |
|---|---|
| WER 3 PRIMARY | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| Reference | Meaning |
|---|---|
| 801560 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| 801560C0DEN01 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| 801650 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| 801650 | 5/9 Secondary reference Stromberg-Carlson Corp a Plessey Telecommunications Co |
| 801560C0DEN01 | 5/9 Secondary reference Stromberg-Carlson Corp a Plessey Telecommunications Co |
NSN 5920-00-221-4517 is a Fuse,enclosed Link, manufactured by Cooper Bussmann, Llc Dba Cooper Industries, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-221-4517 has 1 manufacturer part number on file: WER 3 (Cooper Bussmann, Llc Dba Cooper Industries).
3 possible matches (shared part number, not a government interchangeability claim): 8135-00-282-0565, 6210-00-505-0186, 7025-01-541-9723. Verify interchangeability with system specifications before substitution.
Key specifications for WER 3: Overall Height: 0.031 INCHES NOMINAL IN; Continuous Current Rating in Amps: 3.000; Body Style: SLOTTED LIMITER; Center to Center Distance Between Mounting Facilities Parallel to Length: 0.938 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.