● ISO 9001:2015 · ANSI/ESD S20.20-2021 · ERAI Member · GIDEP · Woman-Owned Small Business 760.724.2800 · 855.RH.HAS.IT · info@rhelectronics.com
Electro National Corp.  · Electronic Components

RM28B

Relay, Electromagnetic

Part NumberRM28B
ManufacturerElectro National Corp.
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Time Delay0.050 SECONDS NOMINAL FIXED RELEASE TIME
Overall Width1.688 INCHES MAXIMUM
Thread Class2B SINGLE MOUNTING FACILITY
Nominal Thread Size0.138 INCHES SINGLE MOUNTING FACILITY
Mounting Facility Type And Quantit2 THREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding Quantity1
Overall Height1.125 INCHES MAXIMUM
Terminal Type And Quantity14 PIN ALL FUNCTIONS
Duty TypeCONTINUOUS
Pile Up Main Contact Form Arrangem4C
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
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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

Frequently asked

Is RM28B available?
We can source RM28B 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 RM28B by Electro National Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If RM28B 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 RM28B?
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 RM28B?
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.