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4257-A1 — FUSE LINK,THERMAL

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4257-A1: FUSE LINK,THERMAL.

The FUSE LINK,THERMAL is a the manufacturer industrial component. Key specifications include temp_rating: 128.0 CELSIUS DEGC, overall_length: 0.457 INCHES NOMINAL IN, terminal_length: 1.380 INCHES NOMINAL IN, overall_diameter: 0.158 INCHES NOMINAL IN, maximum_voltage_rating_in_volts: 277.0 AC, continuous_current_rating_in_amps: 15.000. This part is cataloged in the U.S.

Government catalog under NSN 5920-01-189-2354, 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→ 4257-A1
NSN: 5920-01-189-2354
FSC: 5920 — Fuses, Arrestors, Absorbers, and Protectors
CAGE: 27012 — MICRO DEVICES CORP SUB OF EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
temp_rating128.0 CELSIUS DEGC
overall_length0.457 INCHES NOMINAL IN
terminal_length1.380 INCHES NOMINAL IN
overall_diameter0.158 INCHES NOMINAL IN
maximum_voltage_rating_in_volts277.0 AC
continuous_current_rating_in_amps15.000
NSN5920-01-189-2354
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FUSE LINK,THERMAL TITLE COMPONENT PN 4257-A1 MFR FUSE LINK,THERMAL
KEY FEATURES
•
CONTINUOUS CURRENT RATING IN AMPS: 15.000
•
TEMP RATING: 128.0 CELSIUS DEGC
•
OVERALL DIAMETER: 0.158 INCHES NOMINAL IN
•
TERMINAL LENGTH: 1.380 INCHES NOMINAL IN
•
MAXIMUM VOLTAGE RATING IN VOLTS: 277.0 AC
TECHNICAL CHARACTERISTICS
CONTINUOUS CURRENT RATING IN AMPS15.000
TEMP RATING128.0 CELSIUS DEGC
OVERALL DIAMETER0.158 INCHES NOMINAL IN
TERMINAL LENGTH1.380 INCHES NOMINAL IN
OVERALL LENGTH0.457 INCHES NOMINAL IN
MAXIMUM VOLTAGE RATING IN VOLTS277.0 AC
OTHER ITEMS IN FSC 5920 — Fuses, Arrestors, Absorbers, and Protectors
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5920-00-001-3111 5920-00-001-3260 5920-00-001-3261 5920-00-001-3262 5920-00-001-3263 5920-00-001-3264 5920-00-001-3296 5920-00-001-3840
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4257-A1?
4257-A1 is a FUSE LINK,THERMAL. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 4257-A1?
4257-A1 is cataloged in the U.S. Government catalog under NSN 5920-01-189-2354. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.