Janco · Electronic Components
12-1900-1-C18C
Switch, Rotary
Part Number12-1900-1-C18C
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-433-6761 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Terminal TypeTAB, SOLDER LUG
Pole Quantity1 SINGLE SECTION FRONT
Contact Switching ActionBREAKS BEFORE MAKES SINGLE SECTION REAR
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Shaft Diameter0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM SINGLE ACTUATOR
Hazardous Locations EnvironmentalEXPLOSION PROOF
Switch Contact Basic DesignNONPILE-UP SYMMETRICAL
Switch Actuator Indexing Position18 SINGLE ACTUATOR
Nominal Thread Size0.469 INCHES SINGLE MOUNTING FACILITY
Operating Temp Range-55.0 TO 125.0 CELSIUS
Overall Length1.750 INCHES NOMINAL
Vendor Part NumbersGS835BB1C18NC
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 12-1900-1-C18C available?
We can source 12-1900-1-C18C 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 12-1900-1-C18C by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 12-1900-1-C18C 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 12-1900-1-C18C?
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 12-1900-1-C18C?
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.