The Fuseholder,block, cataloged under National Stock Number 5920-01-017-3231, 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 Regal Beloit America, Inc. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-01-017-3231 |
| Primary Part Number | 6F30A3S |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Regal Beloit America, Inc |
| Status | ACTIVE |
| Accommodated Fuse Length | 5.000 INCHES NOMINAL IN |
| Mounting Hole Quantity | 4 |
| Body Style | SIDE BARRIER TYPE |
| Internal Circuit Configuration and Pole Quantity | 3 POLE, MAINLINE, FUSED |
| Mounting Hole Style | 2 ROWS IN-LINE |
| Coating Method | PLATED TERMINAL |
| Coating Method | PLATED CONTACT |
| Center to Center Distance Between Outside Mounting Holes Along Length | 3.120 INCHES NOMINAL IN |
| Voltage in Volts | 600.0 |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL IN |
| Accommodated Ferrule Diameter | 0.812 INCHES NOMINAL IN |
| Fuse Terminal Type Accommodated | FERRULE |
| Surface Treatment | NICKEL CONTACT |
| Surface Treatment | NICKEL TERMINAL |
| Current Carrying Rating in Amps | 30.0 |
| Center to Center Distance Between Outside Mounting Holes Along Width | 3.750 INCHES NOMINAL IN |
| Base Thickness | 0.770 INCHES NOMINAL IN |
| Material | COPPER ALLOY CONTACT |
| Material | STEEL TERMINAL |
| Material | PLASTIC PHENOLIC BODY |
| Terminal Type and Quantity | 6 SCREW |
| Fuse Accommodation Quantity | 3 |
| 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 |
|---|---|
| 6F30A3S PRIMARY | Regal Beloit America, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6F30A3S | 5/9 Secondary reference Marathon Electric, Llc |
NSN 5920-01-017-3231 is a Fuseholder,block, manufactured by Regal Beloit America, Inc, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-017-3231 has 1 manufacturer part number on file: 6F30A3S (Regal Beloit America, Inc).
Key specifications for 6F30A3S: Accommodated Fuse Length: 5.000 INCHES NOMINAL IN; Mounting Hole Quantity: 4; Overall Height: 2.120 INCHES NOMINAL IN; Body Style: SIDE BARRIER TYPE. 22 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.