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Technical Data Sheet
1R-645U-2C-12D ✓ 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 material: SILVER CONTACT, duty_type: CONTINUOUS, thread_class: 2B SINGLE MOUNTING FACILITY, overall_width: 1.094 INCHES MAXIMUM IN, overall_height: 2.156 INCHES MAXIMUM IN, overall_length: 1.875 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-01-177-2813, 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
1R-645U-2C-12D
NSN: 5945-01-177-2813
FSC: 5945
CAGE: 73949 — GUARDIAN ELECTRIC MANUFACTURING CO DIV GUARDIAN ELECTRIC MFG CO (USA)
SPECIFICATIONS
materialSILVER CONTACT
duty_typeCONTINUOUS
thread_class2B SINGLE MOUNTING FACILITY
coil_quantity1
overall_width1.094 INCHES MAXIMUM IN
overall_height2.156 INCHES MAXIMUM IN
overall_length1.875 INCHES MAXIMUM IN
thread_directionRIGHT-HAND SINGLE MOUNTING FACILITY
winding_quantity1
precious_materialSILVER
nominal_thread_size0.164 INCHES SINGLE MOUNTING FACILITY IN
environmental_protectionDUSTPROOF
NSN5945-01-177-2813
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 1R-645U-2C-12D MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
PRECIOUS MATERIAL AND LOCATION: CONTACTS SILVER
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 10.0 AMPERES AC RESISTIVE LOAD
TERMINAL TYPE AND QUANTITY: 8 TAB, SOLDER LUG ALL FUNCTIONS
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP: 12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
WINDING QUANTITY: 1
MATERIAL: SILVER CONTACT
TECHNICAL CHARACTERISTICS (FLIS)
PRECIOUS MATERIAL AND LOCATIONCONTACTS SILVER
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE10.0 AMPERES AC RESISTIVE LOAD
TERMINAL TYPE AND QUANTITY8 TAB, SOLDER LUG ALL FUNCTIONS
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP12.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
WINDING QUANTITY1
OVERALL HEIGHT2.156 INCHES MAXIMUM IN
MATERIALSILVER CONTACT
PRECIOUS MATERIALSILVER
COIL QUANTITY1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
045204Interchangeable
interchangeable cross-reference
interchangeable
874538Interchangeable
interchangeable cross-reference
interchangeable
45204Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1R-645U-2C-12D?
1R-645U-2C-12D is a RELAY,ELECTROMAGNETIC.
What parts can replace 1R-645U-2C-12D?
There are 3 known substitutes for 1R-645U-2C-12D: 045204, 874538, 45204. Substitute compatibility should be verified for your specific system.
What is the NSN for 1R-645U-2C-12D?
1R-645U-2C-12D is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-01-177-2813. This indicates validated use in U.S. government and defense supply chains.
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