Electro Switch Corp. · Electronic Components
121903LS
Switch, Rotary
Part Number121903LS
ManufacturerElectro Switch Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-481-3834 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Features ProvidedACTUATOR KNOB
Thread Class2B SINGLE MOUNTING FACILITY
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY
Contact Voltage Rating In Volts125.0 AC AT SEA LEVEL
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Pole Quantity1 EACH SECTION REAR
Switch Actuator Indexing Position3 SINGLE ACTUATOR
Overall Length2.906 INCHES NOMINAL
Terminal TypeTAB W/SCREW
Thread Quantity Per Inch24 SINGLE MOUNTING FACILITY
Overall Height2.500 INCHES NOMINAL
Cancelled NSN5930-01-014-2296 (cancelled)
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 121903LS available?
We can source 121903LS 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 121903LS by Electro Switch Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 121903LS 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 121903LS?
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 121903LS?
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.