Sensata Technologies · Electronic Components
21494-2
Switch, Thermostatic
Part Number21494-2
ManufacturerSensata Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-137-8823 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Temp Sensing Element TypeINTERNAL SENSOR
Style DesignatorPLUG
Body Length0.890 INCHES MAXIMUM
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Media For Which DesignedGAS OR LIQUID
Mounting MethodTHREADED BUSHING
Contact Voltage Rating In Volts30.0 DC AT SEA LEVEL THIRD VOLTAGE
Contact Load Current Rating4.0 AMPERES RESISTIVE LOAD SECOND VOLTAGE
Frequency In Hertz60.0 SINGLE VOLTAGE
Hazardous Locations EnvironmentalWATERTIGHT
Terminal TypeWIRE LEAD
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 21494-2 available?
We can source 21494-2 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 21494-2 by Sensata Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21494-2 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 21494-2?
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 21494-2?
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.