PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MDL-3-RFuse,cartridge

Cooper Bussmann, Llc Dba Cooper Industries · NSN 5920-00-377-8279 · FSC 5920 · No Item Name Available
Verified by PartsTable
NSN 5920-00-377-8279 — this item is cataloged by the U.S. Government under National Stock Number 5920-00-377-8279. Primary manufacturer part number: MDL-3-R.
Features
  • Fuse,cartridge — FSC 5920
  • Features Provided: NONRENEWABLE FUSIBLE ELEMENT
  • Continuous Current Rating in Amps: 3.000
  • Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS
  • Maximum Voltage Rating in Volts: 250.0 AC
  • Interruption Indicator Method: VISIBLE ELEMENT
  • Body Style: TUBE TYPE
  • Overall Diameter: 0.250 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Fuse,cartridge, cataloged under National Stock Number 5920-00-377-8279, 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 Cooper Bussmann, Llc Dba Cooper Industries. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5920-00-377-8279
Primary Part NumberMDL-3-R
Item NameFuse,cartridge
FSC / FSG5920 / 59 — No Item Name Available
ManufacturerCooper Bussmann, Llc Dba Cooper Industries
StatusCANCELLED
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Continuous Current Rating in Amps3.000
Circuit Over-Current Interruption TypeNORMAL INSTANTANEOUS
Maximum Voltage Rating in Volts250.0 AC
Interruption Indicator MethodVISIBLE ELEMENT
Body StyleTUBE TYPE
Overall Diameter0.250 INCHES NOMINAL IN
Surface TreatmentSOLDER TERMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3439-00-106-4272 INTERCHANGEABLE
Tip,electric Soldering Iron
3110-00-144-8963 INTERCHANGEABLE
Bearing,ball,annular
2815-00-146-7495 INTERCHANGEABLE
Gearshaft,with Wash
8345-00-233-1782 INTERCHANGEABLE
Flag,national
8345-00-247-0371 INTERCHANGEABLE
Flag,national
8345-00-261-2943 INTERCHANGEABLE
Flag,national
5325-00-366-6538 INTERCHANGEABLE
Ring,retaining
5330-00-405-08526324 INTERCHANGEABLE
Packing,preformed
Tyco Fire Products Lp
5330-00-514-4906 INTERCHANGEABLE
Gasket
5815-00-568-22516324 INTERCHANGEABLE
Wheel Assembly
Telemechanics Inc
Cross-Reference Index
Part NumberManufacturer
6324 International Business Machines Corporation Dba IBM (USA)
MDL-3-R PRIMARY Cooper Bussmann, Llc Dba Cooper Industries (USA)
MBK3 Cooper Bussmann, Llc Dba Cooper Industries (USA)
6324 International Business Machines Corp Parts Order Center Dept E - 54 (USA)
FM06-125V3A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
3439-00-106-4272INTERCHANGEABLE
TIP,ELECTRIC SOLDERING IRON
3110-00-144-8963INTERCHANGEABLE
BEARING,BALL,ANNULAR
2815-00-146-7495INTERCHANGEABLE
GEARSHAFT,WITH WASH
8345-00-233-1782INTERCHANGEABLE
FLAG,NATIONAL
8345-00-247-0371INTERCHANGEABLE
FLAG,NATIONAL
8345-00-261-2943INTERCHANGEABLE
FLAG,NATIONAL
5325-00-366-6538INTERCHANGEABLE
RING,RETAINING
5330-00-405-0852INTERCHANGEABLE
PACKING,PREFORMED
6324
5330-00-514-4906INTERCHANGEABLE
GASKET
5815-00-568-2251INTERCHANGEABLE
WHEEL ASSEMBLY
6324
5950-00-938-4958INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5920-01-028-5727INTERCHANGEABLE
FUSE,CARTRIDGE

Frequently Asked Questions

What is NSN 5920-00-377-8279?

NSN 5920-00-377-8279 is a Fuse,cartridge, manufactured by Cooper Bussmann, Llc Dba Cooper Industries, classified under FSC 5920 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5920-00-377-8279?

NSN 5920-00-377-8279 has 5 cross-referenced part numbers: 6324 (International Business Machines Corporation Dba IBM), MDL-3-R (Cooper Bussmann, Llc Dba Cooper Industries), MBK3 (Cooper Bussmann, Llc Dba Cooper Industries), 6324 (International Business Machines Corp Parts Order Center Dept E - 54), FM06-125V3A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5920-00-377-8279?

There are 12 known substitutes for 5920-00-377-8279: 3439-00-106-4272, 3110-00-144-8963, 2815-00-146-7495 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MDL-3-R?

Key specifications for MDL-3-R: Features Provided: NONRENEWABLE FUSIBLE ELEMENT; Continuous Current Rating in Amps: 3.000; Overall Length: 1.250 INCHES NOMINAL IN; Circuit Over-Current Interruption Type: NORMAL INSTANTANEOUS. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5920-00-377-8279 still in active supply?

NSN 5920-00-377-8279 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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