Eaton Corporation · Electronic Components
AR421A
Relay, Electromagnetic
Part NumberAR421A
ManufacturerEaton Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-01-118-1449 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Mounting Facility Type And Quantit3 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Terminal Type And Quantity10 SCREW ALL FUNCTIONS
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL SINGLE MOUNTING FACILITY
Nonpile Up Main Contact Arrangemen4 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Winding Quantity1
Center To Center Distance Between7.750 INCHES NOMINAL SINGLE MOUNTING FACILITY
Coil Quantity1
Main Contact Load Current Rating A10.0 AMPERES AC RESISTIVE LOAD
Duty TypeCONTINUOUS
Frequency In Hertz60.0 NOMINAL
Overall Width5.656 INCHES NOMINAL
Vendor Part NumbersAR211A
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is AR421A available?
We can source AR421A even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is AR421A by Eaton Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If AR421A has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like AR421A?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for AR421A?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.