Janco · Electronic Components
56-1940
Switch, Rotary
Part Number56-1940
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-256-1258 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Thread Series DesignatorUNS SINGLE MOUNTING FACILITY
Contact Switching ActionBREAKS BEFORE MAKES THIRD SECTION REAR
Switch Actuator Indexing Position12 SINGLE ACTUATOR
Shaft Flat Slot Angular Location180.0 DEGREES FROM NONTURN DEVICE SINGLE ACTUATOR
Contact Load Current Rating3.0 AMPERES RESISTIVE LOAD AND 2.0 AMPERES INDUCTIVE LOAD DC AT SEA LEVEL
Pole Quantity2 FOURTH SECTION REAR
Switch Actuator Stop Device TypeFIXED STOP SINGLE ACTUATOR
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Terminal TypeTAB, SOLDER LUG
Vendor Part Numbers366774-9
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 56-1940 available?
We can source 56-1940 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 56-1940 by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 56-1940 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 56-1940?
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 56-1940?
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.