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Technical Data Sheet
PartsTable / MRO / F21A250V300A
F21A250V300A ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The FUSE,CARTRIDGE is a the manufacturer industrial component. Key specifications include material: FIBER CASE, body_style: KNIFE BLADE TYPE, overall_length: 8.531 INCHES MINIMUM AND 8.719 INCHES MAXIMUM IN, terminal_length: 1.875 INCHES MINIMUM IN, overall_diameter: 2.406 INCHES MAXIMUM IN, features_provided: NONRENEWABLE FUSIBLE ELEMENT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5920-00-243-3714, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ F21A250V300A
NSN: 5920-00-243-3714
FSC: 5920
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialFIBER CASE
body_styleKNIFE BLADE TYPE
overall_length8.531 INCHES MINIMUM AND 8.719 INCHES MAXIMUM IN
terminal_length1.875 INCHES MINIMUM IN
overall_diameter2.406 INCHES MAXIMUM IN
features_providedNONRENEWABLE FUSIBLE ELEMENT
surface_treatmentNICKEL TERMINAL
terminal_thickness0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
specification/standard_data81349-MIL-F-15160/21 GOVERNMENT SPECIFICATION
interruption_indicator_methodOPAQUE BODY
maximum_voltage_rating_in_volts250.0 AC AND 250.0 DC
continuous_current_rating_in_amps300.000
NSN5920-00-243-3714
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FUSE,CARTRIDGE TITLE COMPONENT PN F21A250V300A MFR FUSE,CARTRIDGE
KEY FEATURES
•
TEST DATA DOCUMENT: 81349-MIL-F-15160 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
•
SPECIFICATION/STANDARD DATA: 81349-MIL-F-15160/21 GOVERNMENT SPECIFICATION
•
CONTINUOUS CURRENT RATING IN AMPS: 300.000
•
OVERALL DIAMETER: 2.406 INCHES MAXIMUM IN
•
MAXIMUM VOLTAGE RATING IN VOLTS: 250.0 AC AND 250.0 DC
•
MATERIAL: COPPER TERMINAL
•
FEATURES PROVIDED: NONRENEWABLE FUSIBLE ELEMENT
•
TERMINAL THICKNESS: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
TEST DATA DOCUMENT81349-MIL-F-15160 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
SPECIFICATION/STANDARD DATA81349-MIL-F-15160/21 GOVERNMENT SPECIFICATION
CONTINUOUS CURRENT RATING IN AMPS300.000
OVERALL DIAMETER2.406 INCHES MAXIMUM IN
MAXIMUM VOLTAGE RATING IN VOLTS250.0 AC AND 250.0 DC
MATERIALCOPPER TERMINAL
FEATURES PROVIDEDNONRENEWABLE FUSIBLE ELEMENT
TERMINAL THICKNESS0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
OVERALL LENGTH8.531 INCHES MINIMUM AND 8.719 INCHES MAXIMUM IN
INTERRUPTION INDICATOR METHODOPAQUE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
TR400RInterchangeable
interchangeable cross-reference
interchangeable
E0N400Interchangeable
interchangeable cross-reference
interchangeable
FRNR400Interchangeable
interchangeable cross-reference
interchangeable
WF791Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-15160/21Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-15160/21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F21A250V300A?
F21A250V300A is a FUSE,CARTRIDGE. It is classified as a MRO (MRO_GENERAL).
What parts can replace F21A250V300A?
There are 22 known substitutes for F21A250V300A: TR400R, E0N400, FRNR400 and 19 more. Substitute compatibility should be verified for your specific system.
Is F21A250V300A still available?
F21A250V300A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026