Janco · Electronic Components
4-1900M-4-2N
Switch, Rotary
Part Number4-1900M-4-2N
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-316-3426 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
Shaft Diameter0.250 INCHES NOMINAL SINGLE ACTUATOR
Throw Quantity2 EACH SECTION REAR
Pole Quantity3 EACH SECTION FRONT
Overall Diameter1.100 INCHES NOMINAL
Rotor Through Connection Quantity3 EACH SECTION
Terminal TypeTAB, SOLDER LUG
Contact Load Current Rating0.5 AMPERES RESISTIVE LOAD AND 50.0 MILLIAMPERES INDUCTIVE LOAD DC AT SEA LEVEL
Nonturn Device Radius0.375 INCHES NOMINAL AT 3:00 OCLOCK
Individual Section Quantity4
Thread Class2A SINGLE MOUNTING FACILITY
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 4-1900M-4-2N available?
We can source 4-1900M-4-2N 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 4-1900M-4-2N by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4-1900M-4-2N 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 4-1900M-4-2N?
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 4-1900M-4-2N?
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.