Howell Laboratories · Electronic Components
4381C-G503
Switch, Rotary
Part Number4381C-G503
ManufacturerHowell Laboratories
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-286-7783 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Terminal TypeTAB W/SCREW
Contact Voltage Rating In Volts500.0 AC AT SEA LEVEL
Overall Length4.657 INCHES NOMINAL
Switch Actuator Positioning Increm90.0 DEGREES SINGLE ACTUATOR
Mounting MethodBRACKET(S) AND THREADED HOLE(S) SINGLE MOUNTING FACILITY
Switch Contact Basic DesignNONPILE-UP NONSYMMETRICAL
Contact Load Current Rating30.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
Overall Width2.531 INCHES NOMINAL
Style DesignatorTAP, CIRCUIT SELECTOR
Nominal Thread Size0.250 INCHES SINGLE MOUNTING FACILITY
Thread Class2B SINGLE MOUNTING FACILITY
Vendor Part Numbers123105AA
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 4381C-G503 available?
We can source 4381C-G503 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 4381C-G503 by Howell Laboratories obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4381C-G503 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 4381C-G503?
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 4381C-G503?
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.