The Fuse,cartridge, cataloged under National Stock Number 5920-00-952-4080, 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 13 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5920-00-952-4080 |
| Primary Part Number | ACK250 |
| 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 | 250.000 |
| Body Style | AXIAL TERMINAL TYPE |
| Circuit Over-Current Interruption Delay Time in Seconds | 100.0 200 PCT OF CURRENT RATING AND 35.0 300 PCT OF CURRENT RATING AND 13.0 400 PCT OF CURRENT RATING |
| Overall Diameter | 1.062 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 3.875 INCHES NOMINAL IN |
| Interruption Indicator Method | OPAQUE BODY |
| Features Provided | NONRENEWABLE FUSIBLE ELEMENT |
| Surface Treatment | NICKEL TERMINAL |
| Maximum Voltage Rating in Volts | 125.0 AC AND 125.0 DC |
| Material | COPPER TERMINAL |
| Material | FIBER CASE |
| Circuit Over-Current Interruption Type | TIME DELAY |
| Mounting Slot Width | 0.328 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 |
|---|---|
| ACK250 PRIMARY | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| Reference | Meaning |
|---|---|
| 4999810-7 | C/1 Advisory reference — outside the item-of-supply concept Kalmar AC Inc |
| ACK250 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 195333 | C/1 Advisory reference — outside the item-of-supply concept Hyster-Yale Group, Inc. |
| ECK250 | 5/9 Secondary reference Federal Pacific Electric Co Economy Fuse Div |
NSN 5920-00-952-4080 is a Fuse,cartridge, manufactured by Cooper Bussmann, Llc Dba Cooper Industries, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-952-4080 has 1 manufacturer part number on file: ACK250 (Cooper Bussmann, Llc Dba Cooper Industries).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-330-8556. Verify interchangeability with system specifications before substitution.
Key specifications for ACK250: Continuous Current Rating in Amps: 250.000; Body Style: AXIAL TERMINAL TYPE; Circuit Over-Current Interruption Delay Time in Seconds: 100.0 200 PCT OF CURRENT RATING AND 35.0 300 PCT OF CURRENT RATING AND 13.0 400 PCT OF CURRENT RATING; Overall Diameter: 1.062 INCHES NOMINAL IN. 13 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.