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GT75439 — RELAY,THERMAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

GT75439: RELAY,THERMAL.

The RELAY,THERMAL is a the manufacturer industrial component. Key specifications include overall_width: 1.375 INCHES NOMINAL IN, overall_height: 1.250 INCHES NOMINAL IN, overall_length: 2.375 INCHES NOMINAL IN, contact_arrangement: SINGLE POLE, SINGLE THROW, NORMALLY OPEN, delay_time_in_seconds: 230.0 FIXED OPERATE NOMINAL, environmental_protection: HERMETIC. This part is cataloged in the U.S.

Government catalog under NSN 5945-00-849-4749, 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
GT75439
NSN: 5945-00-849-4749
FSC: 5945 — Relays and Solenoids
CAGE: 93929 — RADIODETECTION, LLC (USA)
SPECIFICATIONS
overall_width1.375 INCHES NOMINAL IN
overall_height1.250 INCHES NOMINAL IN
overall_length2.375 INCHES NOMINAL IN
contact_arrangementSINGLE POLE, SINGLE THROW, NORMALLY OPEN
delay_time_in_seconds230.0 FIXED OPERATE NOMINAL
environmental_protectionHERMETIC
heater_power_rating_in_watts4.0
mounting_facility_type_and_quantity3 UNTHREADED HOLE(S)
contact_maximum_current_rating_in_amps2.0 AC OR 1.0 DC
NSN5945-00-849-4749
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,THERMAL TITLE COMPONENT PN GT75439 MFR RELAY,THERMAL
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 3 UNTHREADED HOLE(S)
•
CONTACT MAXIMUM VOLTAGE RATING IN VOLTS: 250.0 AC AND 32.0 DC
•
DELAY TIME IN SECONDS: 230.0 FIXED OPERATE NOMINAL
•
CONTACT ARRANGEMENT: SINGLE POLE, SINGLE THROW, NORMALLY OPEN
•
HEATER POWER RATING IN WATTS: 4.0
•
HEATER VOLTAGE RATING IN VOLTS: 6.3
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY TYPE AND QUANTITY3 UNTHREADED HOLE(S)
OVERALL HEIGHT1.250 INCHES NOMINAL IN
CONTACT MAXIMUM VOLTAGE RATING IN VOLTS250.0 AC AND 32.0 DC
DELAY TIME IN SECONDS230.0 FIXED OPERATE NOMINAL
CONTACT ARRANGEMENTSINGLE POLE, SINGLE THROW, NORMALLY OPEN
HEATER POWER RATING IN WATTS4.0
HEATER VOLTAGE RATING IN VOLTS6.3
OVERALL LENGTH2.375 INCHES NOMINAL IN
OVERALL WIDTH1.375 INCHES NOMINAL IN
CONTACT MAXIMUM CURRENT RATING IN AMPS2.0 AC OR 1.0 DC
SUBSTITUTES & CROSS-REFERENCES 1
GT4164Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GT75439?
GT75439 is a RELAY,THERMAL.
What parts can replace GT75439?
There is 1 known substitute for GT75439: GT4164. Substitute compatibility should be verified for your specific system.
What is the NSN for GT75439?
GT75439 is cataloged in the U.S. Government catalog under NSN 5945-00-849-4749. 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.