PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

312.125Fuse,cartridge

Littelfuse, Inc. · NSN 5920-01-421-9154 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-01-421-9154 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-421-9154. Primary manufacturer part number: 312.125.
Features
  • Fuse,cartridge — FSC 5920
  • Maximum Voltage Rating in Volts: 250.0 AC
  • 3 verified cross-references
  • Primary manufacturer: Littelfuse, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-01-421-9154, is classified within Federal Supply Class 5920 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Littelfuse, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5920-01-421-9154
Primary Part Number312.125
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
Maximum Voltage Rating in Volts250.0 AC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5920-00-284-9493BK/AGC-B-1/8 INTERCHANGEABLE
Fuse,cartridge
Eaton Corporation
5920-00-296-0451 INTERCHANGEABLE
Fuse,cartridge
5920-00-812-3654 INTERCHANGEABLE
Fuse,cartridge
5920-01-440-0186312 1.25 INTERCHANGEABLE
Fuse,cartridge
Littelfuse, Inc.
Cross-Reference Index
Part NumberManufacturer
0312.125HXP Littelfuse, Inc. (USA)
179887-003 Harris Corp Transcomm Div (USA)
312.125 PRIMARY Littelfuse, Inc. (USA)
Related Parts
5920-00-284-9493INTERCHANGEABLE
FUSE,CARTRIDGE
BK/AGC-B-1/8
5920-00-296-0451INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-812-3654INTERCHANGEABLE
FUSE,CARTRIDGE
5920-01-440-0186INTERCHANGEABLE
FUSE,CARTRIDGE
312 1.25

Frequently Asked Questions

What is NSN 5920-01-421-9154?

NSN 5920-01-421-9154 is a Fuse,cartridge, manufactured by Littelfuse, Inc., classified under FSC 5920 (No Item Name Available). Status: active.

What are the part numbers for NSN 5920-01-421-9154?

NSN 5920-01-421-9154 has 3 cross-referenced part numbers: 0312.125HXP (Littelfuse, Inc.), 179887-003 (Harris Corp Transcomm Div), 312.125 (Littelfuse, Inc.).

What NSN replaces 5920-01-421-9154?

There are 4 known substitutes for 5920-01-421-9154: 5920-00-284-9493, 5920-00-296-0451, 5920-00-812-3654 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 312.125?

Key specifications for 312.125: End Item Identification: VSCS; Maximum Voltage Rating in Volts: 250.0 AC. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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