Topworx · Electronic Components
81-20126-A2
Switch, Proximity
Part Number81-20126-A2
ManufacturerTopworx
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-463-8500 (NSN)
Federal Item NameSWITCH,PROXIMITY
Federal Supply Class5930 — Switches
Operating Temp Rating-40.0 FAHRENHEIT MINIMUM AND 221.0 FAHRENHEIT MAXIMUM
Overall Width1.500 INCHES NOMINAL
Frequency In Hertz60.0 SECOND VOLTAGEUNABLE TO DECODE
Contact Voltage Rating In Volts600.0 AC AT SEA LEVEL FOURTH VOLTAGE
Contact Load Current Rating0.5 AMPERES RESISTIVE LOAD EIGHTH VOLTAGE
Thread Quantity Per Inch14 SINGLE THREADED HOLE
Terminal TypeWIRE LEAD
Thread Series DesignatorNPT SINGLE THREADED HOLE
Overall Length3.880 INCHES NOMINAL
Nominal Thread Size0.500 INCHES SINGLE THREADED HOLE
Overall Height1.500 INCHES NOMINAL
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 81-20126-A2 available?
We can source 81-20126-A2 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 81-20126-A2 by Topworx obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 81-20126-A2 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 81-20126-A2?
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 81-20126-A2?
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.