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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-B-621331
Switch Section, Rotary
Part NumberSM-B-621331
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-093-9517 (NSN)
Federal Item NameSWITCH SECTION,ROTARY
Federal Supply Class5930 — Switches
Operating Temp Range-65.0 TO 85.0 CELSIUS
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL
Pole Quantity2 SINGLE SECTION REAR
Contact Load Current Rating500.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL
Mounting Facility PatternTWO POSITION IN-LINE SINGLE MOUNTING FACILITY
Mounting MethodSTRUT AND UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Contact Switching ActionBREAKS BEFORE MAKES SINGLE SECTION REAR
Unthreaded Mounting Hole Diameter0.126 INCHES NOMINAL SINGLE MOUNTING FACILITY
Throw Quantity5 SINGLE SECTION REAR
Terminal TypePRINTED CIRCUIT
Longest Horizontal Distance Betwee1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY
Vendor Part Numbers4-2425-562
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 SM-B-621331 available?
We can source SM-B-621331 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 SM-B-621331 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-B-621331 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 SM-B-621331?
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 SM-B-621331?
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.