Johnson Controls Inc. Control Products Div · Electronic Components
A28KA-1
Switch, Thermostatic
Part NumberA28KA-1
ManufacturerJohnson Controls Inc. Control Products Div
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-250-1541 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Temp Sensing Element TypeCAPILLARY TUBE-BULB
Mounting MethodFLANGE AND UNTHREADED HOLE(S)
Features ProvidedELECTRICAL ACCESS PORT
Contact Action StimulusINCREASE
Capillary Tube Length120.0 INCHES NOMINAL
Bulb Length2.500 INCHES NOMINAL
Hazardous Locations EnvironmentalDUSTPROOF AND RAINPROOF AND WATERPROOF
Bulb Diameter0.290 INCHES NOMINAL
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
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 A28KA-1 available?
We can source A28KA-1 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 A28KA-1 by Johnson Controls Inc. Control Products Div obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A28KA-1 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 A28KA-1?
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 A28KA-1?
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.