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United Electric Controls  · Electronic Components

J21K-232-9559

Switch, Pressure

Part NumberJ21K-232-9559
ManufacturerUnited Electric Controls
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Contact Action StimulusINCREASEINCREASE
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Overall Width4.750 INCHES NOMINAL4.750 INCHES NOMINAL
Media For Which DesignedGAS OR GAS OR LIQUIDLIQUID
Thread Series DesignatorNPT ALL PRESSURE CONNECTIONNPT ALL PRESSURE CONNECTION
Pressure Switch TypeDIFFERENTIALDIFFERENTIAL
Nominal Thread Size0.250 INCHES ALL PRESSURE CONNECTION0.250 INCHES ALL PRESSURE CONNECTION
Contact Adjustment TypeINTERNAL ACTUATION POINT HEX NUT AND INTERNAL ACTUATION POINT HEX NUT AND INTERNAL DEACTUATION POINT HEX NUTINTERNAL DEA
Longest Vertical Distance Between1.875 INCHES NOMINAL1.875 INCHES NOMINAL
Proof Pressure110.00 POUNDS PER SQUARE INCH110.00 POUNDS PER SQUARE INCH
Contact AdjustabilityACTUATION POINT ADJUSTABLE AND ACTUATION POINT ADJUSTABLE AND DEACTUATION POINT ADJUSTABLEDEACTUATION POINT ADJUSTABLE
Cancelled NSN5930-00-232-3226 (cancelled)
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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

Frequently asked

Is J21K-232-9559 available?
We can source J21K-232-9559 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-232-9559 by United Electric Controls obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If J21K-232-9559 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-232-9559?
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-232-9559?
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.