Eaton Aerospace · Electronic Components
21SN04-25H
Switch, Pressure
Part Number21SN04-25H
ManufacturerEaton Aerospace
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-321-9437 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Overall Width1.400 INCHES MAXIMUM
Media For Which DesignedGAS OR LIQUID
Contact Load Current Rating1.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Pressure Switch TypeDIFFERENTIAL
Overall Height2.400 INCHES MAXIMUM
Proof Pressure200.00 POUNDS PER SQUARE INCH GAGE
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SINGLE VOLTAGE
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 21SN04-25H available?
We can source 21SN04-25H 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 21SN04-25H by Eaton Aerospace obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21SN04-25H 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 21SN04-25H?
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 21SN04-25H?
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.