The Fuse,cartridge, cataloged under National Stock Number 5920-01-104-0508, 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 Mersen Usa Ep Corp. Dba Ferraz Shawmut. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-104-0508 |
| Primary Part Number | A25X400-4 |
| Item Name | Fuse,cartridge |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Mersen Usa Ep Corp. Dba Ferraz Shawmut |
| Status | ACTIVE |
| Continuous Current Rating in Amps | 400.000 |
| Fragility Factor | MODERATELY RUGGED |
| Body Style | HOLE TYPE |
| Overall Diameter | 1.500 INCHES NOMINAL IN |
| Terminal Thickness | 0.250 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL IN |
| Interruption Indicator Method | OPAQUE BODY |
| Features Provided | NONRENEWABLE FUSIBLE ELEMENT |
| Maximum Voltage Rating in Volts | 250.0 AC |
| Material | COPPER TERMINAL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| A25X400-4 PRIMARY | Mersen Usa Ep Corp. Dba Ferraz Shawmut (USA) |
| Reference | Meaning |
|---|---|
| A30QS400-4 | 5/9 Secondary reference Mersen Usa Ep Corp. Dba Ferraz Shawmut |
| 05G00017-0069 | 5/9 Secondary reference Louis Allis Co the This Company Has Gone Bankrupt and Has Been Purchased by 3 Companies |
| 05G10007-0064 | C/1 Advisory reference — outside the item-of-supply concept Magnetek Inc Industrial Controls Group Div Dba Magnetek |
| 05G10007-0064 | C/1 Advisory reference — outside the item-of-supply concept Hsi Electric, Inc. |
| 05G10007-0064 | 3/9 Design control — primary reference Louis Allis Co the This Company Has Gone Bankrupt and Has Been Purchased by 3 Companies |
NSN 5920-01-104-0508 is a Fuse,cartridge, manufactured by Mersen Usa Ep Corp. Dba Ferraz Shawmut, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-104-0508 has 1 manufacturer part number on file: A25X400-4 (Mersen Usa Ep Corp. Dba Ferraz Shawmut).
Key specifications for A25X400-4: Overall Height: 2.781 INCHES NOMINAL IN; Continuous Current Rating in Amps: 400.000; Fragility Factor: MODERATELY RUGGED; Body Style: HOLE TYPE. 12 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.