Lockheed Martin Librascope Corporation · Electronic Components
L503000385
Relay, Electromagnetic
Part NumberL503000385
ManufacturerLockheed Martin Librascope Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-949-4940 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Overall Length1.410 INCHES NOMINAL
Winding Dc Resistance Rating500.0 OHMS NOMINAL SINGLE WINDING
Center To Center Distance Between0.400 INCHES NOMINAL SINGLE MOUNTING FACILITY
Coil Quantity1
Environmental ProtectionHERMETIC
Overall Width1.020 INCHES NOMINAL
Arc Quenching MethodAIR
Purpose For Which DesignedGENERAL
Nonpile Up Main Contact Arrangemen4 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Main Contact Load Current Rating A2.0 AMPERES AC INDUCTIVE LOAD
Unthreaded Mounting Hole Diameter0.096 INCHES NOMINAL SINGLE MOUNTING FACILITY
Vendor Part Numbers2424584
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 L503000385 available?
We can source L503000385 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 L503000385 by Lockheed Martin Librascope Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If L503000385 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 L503000385?
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 L503000385?
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.