Omega Engineering, Inc. · Electronic Components
TSW-21
Switch, Thermostatic
Part NumberTSW-21
ManufacturerOmega Engineering, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-652-0175 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Terminal TypeWIRE LEAD
Mounting MethodUNTHREADED HOLE(S)
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED
Overall Diameter9.7 MILLIMETERS NOMINAL
Overall Length171.5 MILLIMETERS NOMINAL
Contact Action StimulusINCREASE
Unthreaded Mounting Hole Diameter9.7 MILLIMETERS NOMINAL
Temp Sensing Element TypeDIAPHRAGM
Contact Adjustment Range-13.0 TO 63.0 ACTUATION POINT DEGREES FAHRENHEIT
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
Style DesignatorCYLINDRICAL
ESD/EMICode A — ESD/EMI sensitive item
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 TSW-21 available?
We can source TSW-21 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 TSW-21 by Omega Engineering, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If TSW-21 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 TSW-21?
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 TSW-21?
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.