Janco · Electronic Components
1905-3-B9
Switch, Rotary
Part Number1905-3-B9
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-460-3406 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Thread Class2A SINGLE MOUNTING FACILITY
Throw Quantity9 EACH SECTION REAR
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Shaft Diameter0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE ACTUATOR
Switch Actuator Positioning Increm30.0 DEGREES ALL ACTUATORS
Overall Diameter1.306 INCHES MAXIMUM
Thread Series DesignatorUNEF SINGLE MOUNTING FACILITY
Switch Actuator Stop Device TypeFIXED STOP ALL ACTUATORS
Overall Length2.462 INCHES NOMINAL
Shaft Length0.800 INCHES NOMINAL SINGLE ACTUATOR
Vendor Part NumbersA30-1-3-B9N, GS835U3B9N
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 1905-3-B9 available?
We can source 1905-3-B9 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 1905-3-B9 by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1905-3-B9 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 1905-3-B9?
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 1905-3-B9?
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.