Janco · Electronic Components
1784-3
Switch, Rotary
Part Number1784-3
ManufacturerJanco
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-078-6487 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Style DesignatorTAP, CIRCULAR, BUSHING MOUNT
Switch Actuator Positioning Increm90.0 DEGREES SINGLE ACTUATOR
Individual Section Quantity5
Overall Diameter2.120 INCHES NOMINAL
Pole Quantity1 EACH SECTION FRONT
Contact Voltage Rating In Volts115.0 AC AT SEA LEVEL
Thread Length0.470 INCHES NOMINAL SINGLE MOUNTING FACILITY
Nonturn Device Radius0.372 INCHES NOMINAL AT 6:00 OCLOCK
Nominal Thread Size0.468 INCHES SINGLE MOUNTING FACILITY
Shaft TypeROUND, FLATTED SINGLE ACTUATOR
Switch Actuator Indexing Position4 SINGLE ACTUATOR
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 1784-3 available?
We can source 1784-3 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 1784-3 by Janco obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1784-3 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 1784-3?
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 1784-3?
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.