United Electric Controls · Electronic Components
J21K-9559
Switch, Pressure
Part NumberJ21K-9559
ManufacturerUnited Electric Controls
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-444-5807 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Contact AdjustabilityACTUATION POINT ADJUSTABLE
Overall Length8.060 INCHES NOMINAL
Contact Voltage Rating In Volts480.0 AC AT SEA LEVEL SINGLE VOLTAGE
Body Length3.000 INCHES NOMINAL
Pressure Switch TypeDIFFERENTIAL
Contact Load Current Rating15.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Mounting MethodUNTHREADED HOLE(S)
Style DesignatorRECTANGULAR
Contact Action StimulusINCREASE
Overall Width67.500 MILLIMETERS 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 J21K-9559 available?
We can source J21K-9559 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 J21K-9559 by United Electric Controls obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If J21K-9559 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 J21K-9559?
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 J21K-9559?
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.