PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

251.250Fuse,cartridge

Littelfuse, Inc. · NSN 5920-01-389-0826 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-01-389-0826 — this item is cataloged by the U.S. Government under National Stock Number 5920-01-389-0826. Primary manufacturer part number: 251.250.
Features
  • Fuse,cartridge — FSC 5920
  • Features Provided: NONRENEWABLE FUSIBLE ELEMENT
  • Terminal Diameter: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
  • Overall Diameter: 0.0880 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN
  • Body Style: PIGTAIL TYPE
  • Maximum Voltage Rating in Volts: 125.0 AC
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
  • Interruption Indicator Method: OPAQUE BODY
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-01-389-0826, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5920-01-389-0826
Primary Part Number251.250
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Terminal Diameter0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
Overall Diameter0.0880 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN
Body StylePIGTAIL TYPE
Maximum Voltage Rating in Volts125.0 AC
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Interruption Indicator MethodOPAQUE BODY
Continuous Current Rating in Amps0.250
Terminal Length1.437 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN
Fragility FactorMODERATELY RUGGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2810-00-639-9731251250 INTERCHANGEABLE
Valve Assembly,oil
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5920-01-232-6463A 1/4 INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
5920-01-669-4397 INTERCHANGEABLE
Fuse,cartridge
Cross-Reference Index
Part NumberManufacturer
251.250 PRIMARY Littelfuse, Inc. (USA)
Related Parts
2810-00-639-9731INTERCHANGEABLE
VALVE ASSEMBLY,OIL
251250
5920-01-232-6463INTERCHANGEABLE
FUSE,CARTRIDGE
A 1/4
5920-01-669-4397INTERCHANGEABLE
FUSE,CARTRIDGE

Frequently Asked Questions

What is NSN 5920-01-389-0826?

NSN 5920-01-389-0826 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 5920-01-389-0826?

NSN 5920-01-389-0826 has 1 cross-referenced part number: 251.250 (Littelfuse, Inc.).

What NSN replaces 5920-01-389-0826?

There are 3 known substitutes for 5920-01-389-0826: 2810-00-639-9731, 5920-01-232-6463, 5920-01-669-4397. Verify interchangeability with system specifications before substitution.

What are the specifications of 251.250?

Key specifications for 251.250: Overall Length: 0.260 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN; Features Provided: NONRENEWABLE FUSIBLE ELEMENT; Terminal Diameter: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN; Overall Diameter: 0.0880 INCHES MINIMUM AND 0.1030 INCHES MAXIMUM IN. 11 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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