PartsTable
Technical Data Sheet
PartsTable / COMPONENT / HE421A0500
HE421A0500 ✓ 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,REED is a the manufacturer industrial component. Key specifications include duty_type: CONTINUOUS, coil_quantity: 11, overall_width: 0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN, overall_height: 0.405 INCHES MAXIMUM0.405 INCHES MAXIMUM IN, overall_length: 1.200 INCHES NOMINAL1.200 INCHES NOMINAL IN, winding_quantity: 11. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-01-078-6457, 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
HE421A0500
NSN: 5945-01-078-6457
FSC: 5945
CAGE: 12617 — HAMLIN INC (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
coil_quantity11
overall_width0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN
overall_height0.405 INCHES MAXIMUM0.405 INCHES MAXIMUM IN
overall_length1.200 INCHES NOMINAL1.200 INCHES NOMINAL IN
winding_quantity11
terminal_type_and_quantity4 PIN ALL FUNCTIONS
winding_dc_resistance_rating200.0 OHMS NOMINAL SINGLE WINDING
mounting_facility_type_and_quantity1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
nonpile-up_main_contact_arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
nominal_operating_current_rating_and_type30.0 MILLIAMPERES DC SINGLE WINDING
main_contact_maximum_voltage_rating_in_volts150.0 AC AND 100.0 DC
NSN5945-01-078-6457
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,REED TITLE COMPONENT PN HE421A0500 MFR RELAY,REED
KEY FEATURES
•
NONPILE-UP MAIN CONTACT ARRANGEMENT: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
•
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP: 6.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
•
TERMINAL TYPE AND QUANTITY: 4 PIN ALL FUNCTIONS
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
•
NOMINAL OPERATING CURRENT RATING AND TYPE: 30.0 MILLIAMPERES DC SINGLE WINDING
•
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE: 500.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC RESISTIVE LOAD
•
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS: 150.0 AC AND 100.0 DC
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH1.200 INCHES NOMINAL1.200 INCHES NOMINAL IN
NONPILE-UP MAIN CONTACT ARRANGEMENT1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
OPERATING VOLTAGE RATING AND TYPE AT SPECIFIED TEMP6.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
TERMINAL TYPE AND QUANTITY4 PIN ALL FUNCTIONS
MOUNTING FACILITY TYPE AND QUANTITY1 PLUG-IN TERMINAL(S) SINGLE MOUNTING FACILITY
NOMINAL OPERATING CURRENT RATING AND TYPE30.0 MILLIAMPERES DC SINGLE WINDING
MAIN CONTACT LOAD CURRENT RATING AT MAXIMUM RATED VOLTAGE500.0 MILLIAMPERES AC AND 500.0 MILLIAMPERES DC RESISTIVE LOAD
MAIN CONTACT MAXIMUM VOLTAGE RATING IN VOLTS150.0 AC AND 100.0 DC
WINDING DC RESISTANCE RATING200.0 OHMS NOMINAL SINGLE WINDING
OVERALL WIDTH0.400 INCHES NOMINAL0.400 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
4730Interchangeable
interchangeable cross-reference
interchangeable
SEB-H308Interchangeable
interchangeable cross-reference
interchangeable
90J1R0Interchangeable
interchangeable cross-reference
interchangeable
4743SWRInterchangeable
interchangeable cross-reference
interchangeable
SC-B-125338Interchangeable
interchangeable cross-reference
interchangeable
SCC91453Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy HE421A0500?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is HE421A0500?
HE421A0500 is a RELAY,REED.
What parts can replace HE421A0500?
There are 15 known substitutes for HE421A0500: 4730, SEB-H308, 90J1R0 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HE421A0500?
HE421A0500 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-01-078-6457. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — HE421A0500

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026