Hughey & Phillips · Electronic Components
SW4840
Switch, Mercury
Part NumberSW4840
ManufacturerHughey & Phillips
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-350-8359 (NSN)
Federal Item NameSWITCH,MERCURY
Federal Supply Class5930 — Switches
Contact Load Current Rating At Max20.000 AMPERES RESISTIVE AC
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
Switch Actuation Differential Angl30.0 DEGREES NOMINAL
Body Diameter0.750 INCHES NOMINAL
Mounting MethodTERMINAL
Body StyleCASED
Terminal Type And Quantity3 WIRE LEAD
Maximum Voltage Rating In Volts115.0 AC
Body Length2.500 INCHES NOMINAL
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 SW4840 available?
We can source SW4840 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 SW4840 by Hughey & Phillips obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SW4840 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 SW4840?
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 SW4840?
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.