Kearfott · Electronic Components
B514001021
Switch, Thermostatic
Part NumberB514001021
ManufacturerKearfott
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-156-3660 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Style DesignatorDISC
Terminal TypePIN
Contact Action StimulusINCREASE
Nonpile Up Contact Arrangement1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Nominal Thread Size0.250 INCHES SINGLE THREADED BUSHING
Media For Which DesignedGAS OR LIQUID
Frequency In Hertz60.0 FIRST VOLTAGE
Thread Class2A SINGLE THREADED BUSHING
Mounting MethodTHREADED BUSHING
Contact Voltage Rating In Volts30.0 DC AT SEA LEVEL SECOND VOLTAGE
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE AND ACTUATION POINT NOT ADJUSTABLE
Vendor Part Numbers4BTL7-45-3, 4BTL2-45-3
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 B514001021 available?
We can source B514001021 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 B514001021 by Kearfott obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B514001021 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 B514001021?
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 B514001021?
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.