Janco · Electronic Components
1905-2-B4
Switch, Rotary
Part Number1905-2-B4
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-316-3428 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Thread Class2A SINGLE MOUNTING FACILITY
Shaft Length0.375 INCHES NOMINAL SINGLE ACTUATOR
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Overall Diameter1.036 INCHES MAXIMUM
Rotor Through Connection Quantity1 EACH SECTION
First Flat Length0.250 INCHES NOMINAL SINGLE ACTUATOR
Pole Quantity1 EACH SECTION FRONT
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Mounting MethodTHREADED BUSHING SINGLE MOUNTING FACILITY
Terminal TypeTAB, SOLDER LUG
Contact Load Current Rating1.0 AMPERES RESISTIVE LOAD AND 0.5 AMPERES RESISTIVE LOAD DC AT SEA LEVEL
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 1905-2-B4 available?
We can source 1905-2-B4 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 1905-2-B4 by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1905-2-B4 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 1905-2-B4?
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 1905-2-B4?
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.