PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3AG0-125Fuse,cartridge

Littelfuse, Inc. · NSN 5920-00-812-3654 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-00-812-3654 — this item is cataloged by the U.S. Government under National Stock Number 5920-00-812-3654. Primary manufacturer part number: 3AG0-125.
Features
  • Fuse,cartridge — FSC 5920
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATEDBY PAC TEST
  • Interruption Indicator Method: VISIBLE ELEMENT
  • Features Provided: NONRENEWABLE FUSIBLE ELEMENT
  • Maximum Voltage Rating in Volts: 250.0 AC AND 250.0 DC
  • Continuous Current Rating in Amps: 0.125
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
  • Overall Diameter: 0.250 INCHES NOMINAL IN
Applications
  • Applications requiring Glass Case construction
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-00-812-3654, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5920-00-812-3654
Primary Part Number3AG0-125
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerLittelfuse, Inc.
StatusACTIVE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATEDBY PAC TEST
Interruption Indicator MethodVISIBLE ELEMENT
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Maximum Voltage Rating in Volts250.0 AC AND 250.0 DC
Continuous Current Rating in Amps0.125
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Overall Diameter0.250 INCHES NOMINAL IN
MaterialGLASS CASE
Surface TreatmentNICKEL TERMINAL
Test Data Document75915-O+2747 STANDARD (INCLUDES INDUSTRY OR ASSOCIATION STANDARDS, INDIVIDUAL MANUFACTUREER STANDARDS, ETC.).
Body StyleTUBE TYPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5920-00-284-9493BK/AGC-B-1/8 INTERCHANGEABLE
Fuse,cartridge
Eaton Corporation
5920-00-296-0451 INTERCHANGEABLE
Fuse,cartridge
2915-00-998-8335212267-1 INTERCHANGEABLE
Parts Kit,pump,depo
Eaton Corp Dba Eaton Aerospace Jackson
5920-01-421-9154312.125 INTERCHANGEABLE
Fuse,cartridge
Littelfuse, Inc.
5920-01-440-0186312 1.25 INTERCHANGEABLE
Fuse,cartridge
Littelfuse, Inc.
Cross-Reference Index
Part NumberManufacturer
3AG0-125 Littelfuse, Inc. (USA)
910818-8 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
212-267 Cae Inc (CAN)
312-125 Littelfuse, Inc. (USA)
Related Parts
5920-00-284-9493INTERCHANGEABLE
FUSE,CARTRIDGE
BK/AGC-B-1/8
5920-00-296-0451INTERCHANGEABLE
FUSE,CARTRIDGE
2915-00-998-8335INTERCHANGEABLE
PARTS KIT,PUMP,DEPO
212267-1
5920-01-421-9154INTERCHANGEABLE
FUSE,CARTRIDGE
312.125
5920-01-440-0186INTERCHANGEABLE
FUSE,CARTRIDGE
312 1.25

Frequently Asked Questions

What is NSN 5920-00-812-3654?

NSN 5920-00-812-3654 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 5920-00-812-3654?

NSN 5920-00-812-3654 has 4 cross-referenced part numbers: 3AG0-125 (Littelfuse, Inc.), 910818-8 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 212-267 (Cae Inc), 312-125 (Littelfuse, Inc.).

What NSN replaces 5920-00-812-3654?

There are 5 known substitutes for 5920-00-812-3654: 5920-00-284-9493, 5920-00-296-0451, 2915-00-998-8335 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3AG0-125?

Key specifications for 3AG0-125: Reference Number Differentiating Characteristics: AS DIFFERENTIATEDBY PAC TEST; Interruption Indicator Method: VISIBLE ELEMENT; Features Provided: NONRENEWABLE FUSIBLE ELEMENT; Maximum Voltage Rating in Volts: 250.0 AC AND 250.0 DC. 12 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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