Johnson Controls, Inc. · Electronic Components
A-421-602
Relay, Electromagnetic
Part NumberA-421-602
ManufacturerJohnson Controls, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-01-278-8139 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Coil Quantity1
Duty TypeCONTINUOUS
Winding Quantity1
Nonpile Up Main Contact Arrangemen2 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Cubic Measure34.633 CUBIC INCHES
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Overall Width2.750 INCHES MAXIMUM
Terminal Type And Quantity4 SCREW ALL FUNCTIONS
Storage TypeGENERAL PURPOSE WAREHOUSE
Purpose For Which DesignedGENERAL
Unthreaded Mounting Hole Diameter0.120 INCHES NOMINAL SINGLE MOUNTING FACILITY
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 A-421-602 available?
We can source A-421-602 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 A-421-602 by Johnson Controls, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A-421-602 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 A-421-602?
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 A-421-602?
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.