Shallco, Inc. · Electronic Components
28-PM-4
Switch, Rotary
Part Number28-PM-4
ManufacturerShallco, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-254-9720 (NSN)
Federal Item NameSWITCH,ROTARY
Federal Supply Class5930 — Switches
Switch Actuator Indexing Position4 SINGLE ACTUATOR
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL
Precious Material And LocationCONTACT SURFACES SILVER AND CNTACT SURFACES GOLD
Pole Quantity2 SINGLE SECTION REAR
Contact Switching ActionMAKES BEFORE BREAKS SINGLE SECTION REAR
Mounting MethodPRINTED CIRCUIT SINGLE MOUNTING FACILITY
Overall Length0.546 INCHES NOMINAL
Overall Diameter0.500 INCHES NOMINAL
Individual Section Quantity1
Style DesignatorMINIATURE, PIN MOUNT
Contact Load Current Rating3.0 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 28-PM-4 available?
We can source 28-PM-4 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 28-PM-4 by Shallco, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 28-PM-4 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 28-PM-4?
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 28-PM-4?
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.