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Technical Data Sheet
A3157721 ✓ Verified by PartsTable
· COMPONENT
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 RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include duty_type: CONTINUOUS, storage_type: GENERAL PURPOSE WAREHOUSE, cubic_measure: 21.578 CUBIC INCHES, overall_width: 3.125 INCHES MAXIMUM IN, overall_height: 1.938 INCHES MAXIMUM IN, overall_length: 3.563 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-01-252-1412, 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
A3157721
NSN: 5945-01-252-1412
FSC: 5945
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
storage_typeGENERAL PURPOSE WAREHOUSE
coil_quantity1
cubic_measure21.578 CUBIC INCHES
overall_width3.125 INCHES MAXIMUM IN
overall_height1.938 INCHES MAXIMUM IN
overall_length3.563 INCHES MAXIMUM IN
fragility_factorMODERATELY RUGGED
winding_quantity1
mounting_slot_width0.281 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
arc_quenching_methodAIR
end_item_identificationADAPTER,TEST
NSN5945-01-252-1412
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN A3157721 MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
COIL QUANTITY: 1
TERMINAL TYPE AND QUANTITY: 4 THREADED STUD ALL FUNCTIONS
PURPOSE FOR WHICH DESIGNED: GENERAL
DUTY TYPE: CONTINUOUS
MOUNTING FACILITY PATTERN: IN-LINE SINGLE MOUNTING FACILITY
WINDING QUANTITY: 1
FRAGILITY FACTOR: MODERATELY RUGGED
TECHNICAL CHARACTERISTICS (FLIS)
COIL QUANTITY1
TERMINAL TYPE AND QUANTITY4 THREADED STUD ALL FUNCTIONS
END ITEM IDENTIFICATIONADAPTER,TEST
PURPOSE FOR WHICH DESIGNEDGENERAL
DUTY TYPECONTINUOUS
MOUNTING FACILITY PATTERNIN-LINE SINGLE MOUNTING FACILITY
WINDING QUANTITY1
FRAGILITY FACTORMODERATELY RUGGED
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS24.0 DC
NONPILE-UP MAIN CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
24903LHInterchangeable
interchangeable cross-reference
interchangeable
635J950 ITEM 140Interchangeable
interchangeable cross-reference
interchangeable
124903Interchangeable
interchangeable cross-reference
interchangeable
12421Interchangeable
interchangeable cross-reference
interchangeable
124-114111Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3157721?
A3157721 is a RELAY,ELECTROMAGNETIC.
What parts can replace A3157721?
There are 5 known substitutes for A3157721: 24903LH, 635J950 ITEM 140, 124903 and 2 more. Substitute compatibility should be verified for your specific system.
Is A3157721 still available?
A3157721 is currently cancelled.
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