TDR4550 — RELAY,THERMAL

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

TDR4550: RELAY,THERMAL.

The RELAY,THERMAL is a the manufacturer industrial component. Key specifications include overall_length: 2.500 INCHES NOMINAL IN, overall_diameter: 1.286 INCHES NOMINAL IN, special_features: 10.0 TO 40.0 SEC RELEASE TIME, contact_arrangement: SINGLE POLE, DOUBLE THROW, delay_time_in_seconds: 75.0 FIXED OPERATE NOMINAL, environmental_protection: HERMETIC. This part is cataloged in the U.S.

Government catalog under NSN 5945-00-615-2477, 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

TDR4550

NSN: 5945-00-615-2477
FSC: 5945 — Relays and Solenoids
CAGE: 57741 — NAULT ROBERT DBA TDR ELECTRONICS (USA)

SPECIFICATIONS

overall_length	2.500 INCHES NOMINAL IN
overall_diameter	1.286 INCHES NOMINAL IN
special_features	10.0 TO 40.0 SEC RELEASE TIME
contact_arrangement	SINGLE POLE, DOUBLE THROW
delay_time_in_seconds	75.0 FIXED OPERATE NOMINAL
environmental_protection	HERMETIC
terminal_type_and_quantity	8 PIN
heater_power_rating_in_watts	5.0
mounting_facility_type_and_quantity	1 OCTAL BASE PLUG-IN
contact_maximum_current_rating_in_amps	3.0 AC
NSN	5945-00-615-2477

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY TYPE AND QUANTITY: 1 OCTAL BASE PLUG-IN

•

CONTACT MAXIMUM VOLTAGE RATING IN VOLTS: 230.0 AC

•

DELAY TIME IN SECONDS: 75.0 FIXED OPERATE NOMINAL

•

CONTACT ARRANGEMENT: SINGLE POLE, DOUBLE THROW

•

OVERALL DIAMETER: 1.286 INCHES NOMINAL IN

•

HEATER POWER RATING IN WATTS: 5.0

•

HEATER VOLTAGE RATING IN VOLTS: 26.5

TECHNICAL CHARACTERISTICS

MOUNTING FACILITY TYPE AND QUANTITY	1 OCTAL BASE PLUG-IN
CONTACT MAXIMUM VOLTAGE RATING IN VOLTS	230.0 AC
DELAY TIME IN SECONDS	75.0 FIXED OPERATE NOMINAL
CONTACT ARRANGEMENT	SINGLE POLE, DOUBLE THROW
OVERALL DIAMETER	1.286 INCHES NOMINAL IN
HEATER POWER RATING IN WATTS	5.0
HEATER VOLTAGE RATING IN VOLTS	26.5
OVERALL LENGTH	2.500 INCHES NOMINAL IN
CONTACT MAXIMUM CURRENT RATING IN AMPS	3.0 AC
SPECIAL FEATURES	10.0 TO 40.0 SEC RELEASE TIME

OTHER ITEMS IN FSC 5945 — Relays and Solenoids

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

5945-00-000-0093 5945-00-001-1891 5945-00-001-2622 5945-00-001-2795 5945-00-001-2806 5945-00-001-2938 5945-00-001-3015 5945-00-001-3016

SUBSTITUTES & CROSS-REFERENCES 2

26-5-75BReference document

Same NSN cross-reference

Reference document — Secondary reference

26.5-75-SBReference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is TDR4550?

TDR4550 is a RELAY,THERMAL.

What parts can replace TDR4550?

There are 2 known substitutes for TDR4550: 26-5-75B, 26.5-75-SB. Substitute compatibility should be verified for your specific system.

What is the NSN for TDR4550?

TDR4550 is cataloged in the U.S. Government catalog under NSN 5945-00-615-2477. This indicates validated use in U.S. government and defense supply chains.

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TDR4550 — RELAY,THERMAL

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