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Technical Data Sheet
PartsTable / COMPONENT / 310-18721-01
310-18721-01 ✓ 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 body_width: 1.780 INCHES MAXIMUM IN, body_height: 3.280 INCHES MAXIMUM IN, body_length: 3.000 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, mounting_method: UNTHREADED HOLE(S) SINGLE GROUP, frequency_rating: 15.0 KILOHERTZ NOMINAL SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-222-4442, 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
310-18721-01
NSN: 5950-01-222-4442
FSC: 5950
CAGE: 95266 — OECO, LLC DBA PACIFIC SCIENTIFIC OECO DIV FIRE SAFETY AND POWER SYSTEMS (USA)
SPECIFICATIONS
body_width1.780 INCHES MAXIMUM IN
body_height3.280 INCHES MAXIMUM IN
body_length3.000 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
mounting_methodUNTHREADED HOLE(S) SINGLE GROUP
frequency_rating15.0 KILOHERTZ NOMINAL SINGLE COMPONENT
reliability_indicatorNOT ESTABLISHED
maximum_operating_temp130.0 CELSIUS DEGC
mounting_hole_diameter0.156 INCHES NOMINAL SINGLE GROUP IN
winding_operating_current2.3 AMPERES DC MINIMUM AND 5.1 AMPERES AC MAXIMUM SINGLE COMPONENT FOURTH SECONDARY
winding_operating_voltage8.48 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
mounting_facility_quantity4 SINGLE GROUP
NSN5950-01-222-4442
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 310-18721-01 MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
•
WINDING OPERATING VOLTAGE: 8.48 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
•
MAXIMUM OPERATING TEMP: 130.0 CELSIUS DEGC
•
WINDING OPERATING CURRENT: 10.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD PRIMARY
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
BODY WIDTH: 1.780 INCHES MAXIMUM IN
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
TECHNICAL CHARACTERISTICS (FLIS)
WINDING OPERATING VOLTAGE8.48 AC VOLTS NOMINAL SINGLE COMPONENT SECOND PRIMARY
MAXIMUM OPERATING TEMP130.0 CELSIUS DEGC
WINDING OPERATING CURRENT10.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD PRIMARY
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
BODY WIDTH1.780 INCHES MAXIMUM IN
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
WINDING OPERATING CURRENT15.0 AMPERES DC MINIMUM AND 20.0 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
WINDING OPERATING VOLTAGE10.00 DC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
WINDING OPERATING VOLTAGE268.66 AC VOLTS NOMINAL SINGLE COMPONENT FIRST PRIMARY
MOUNTING HOLE DIAMETER0.156 INCHES NOMINAL SINGLE GROUP IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
N11780Interchangeable
interchangeable cross-reference
interchangeable
11780Interchangeable
interchangeable cross-reference
interchangeable
2MS10B1Interchangeable
interchangeable cross-reference
interchangeable
1321-0610Interchangeable
interchangeable cross-reference
interchangeable
MS15718-29Interchangeable
interchangeable cross-reference
interchangeable
W500-610Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 310-18721-01?
310-18721-01 is a RELAY,ELECTROMAGNETIC.
What parts can replace 310-18721-01?
There are 15 known substitutes for 310-18721-01: N11780, 11780, 2MS10B1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 310-18721-01?
310-18721-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-01-222-4442. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026