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Technical Data Sheet
51-08121-55 ✓ 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, thread_class: 2B SINGLE MOUNTING FACILITY, overall_width: 1.015 INCHES NOMINAL IN, overall_height: 1.000 INCHES MAXIMUM IN, overall_length: 1.500 INCHES NOMINAL IN, frequency_in_hertz: 60.0 NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-189-2094, 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
51-08121-55
NSN: 5945-00-189-2094
FSC: 5945
CAGE: 59291 — ELKAY MFG CO WATER COOLER DIV (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
thread_class2B SINGLE MOUNTING FACILITY
coil_quantity1
overall_width1.015 INCHES NOMINAL IN
overall_height1.000 INCHES MAXIMUM IN
overall_length1.500 INCHES NOMINAL IN
winding_quantity1
frequency_in_hertz60.0 NOMINAL
nominal_thread_size0.164 INCHES SINGLE MOUNTING FACILITY IN
thread_quantity_per_inch32 SINGLE MOUNTING FACILITY
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
mounting_facility_patternIN-LINE SINGLE MOUNTING FACILITY
NSN5945-00-189-2094
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 51-08121-55 MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP: 230.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
WINDING QUANTITY: 1
TERMINAL TYPE AND QUANTITY: 4 PIN ALL FUNCTIONS
MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
MOUNTING FACILITY PATTERN: IN-LINE SINGLE MOUNTING FACILITY
COIL QUANTITY: 1
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP230.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
OVERALL HEIGHT1.000 INCHES MAXIMUM IN
WINDING QUANTITY1
TERMINAL TYPE AND QUANTITY4 PIN ALL FUNCTIONS
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
OVERALL LENGTH1.500 INCHES NOMINAL IN
MOUNTING FACILITY PATTERNIN-LINE SINGLE MOUNTING FACILITY
COIL QUANTITY1
OVERALL WIDTH1.015 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.164 INCHES SINGLE MOUNTING FACILITY IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
8121Interchangeable
interchangeable cross-reference
interchangeable
CR-141Interchangeable
interchangeable cross-reference
interchangeable
SS-7208HInterchangeable
interchangeable cross-reference
interchangeable
13B23947-00Interchangeable
interchangeable cross-reference
interchangeable
2N3947Interchangeable
interchangeable cross-reference
interchangeable
672-2090-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51-08121-55?
51-08121-55 is a RELAY,ELECTROMAGNETIC.
What parts can replace 51-08121-55?
There are 16 known substitutes for 51-08121-55: 8121, CR-141, SS-7208H and 13 more. Substitute compatibility should be verified for your specific system.
Is 51-08121-55 still available?
51-08121-55 is currently cancelled.
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