Sensata Technologies · Electronic Components
21730
Switch, Thermostatic
Part Number21730
ManufacturerSensata Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-078-3578 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Hazardous Locations EnvironmentalEXPLOSION PROOF
Features ProvidedELECTRICAL BOX CONNECTOR
Temp Sensing Element TypeINTERNAL SENSOR
Operating Temp Rating-65.0 FAHRENHEIT MINIMUM AND 300.0 FAHRENHEIT MAXIMUM
Mounting MethodBRACKET(S) AND SLOT
Body Diameter0.665 INCHES MAXIMUM
Contact Action StimulusDECREASE
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Terminal TypeCONNECTOR, RECEPTACLE
Body Height1.150 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
Vendor Part Numbers644792-103
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 21730 available?
We can source 21730 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 21730 by Sensata Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21730 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 21730?
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 21730?
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.