Johnston Boiler · Electronic Components
11993
Switch, Pressure
Part Number11993
ManufacturerJohnston Boiler
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-145-9231 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Contact AdjustabilityDEACTUATION POINT NOT ADJUSTABLE, MANUAL RESET AND ACTUATION POINT ADJUSTABLE, PRESET
Body Height3.875 INCHES NOMINAL
Contact Action StimulusINCREASE
Pressure Connector TypePLAIN, THREADED INTERNAL SINGLE CONNECTION
Pressure Switch TypeDIFFERENTIAL
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Overall Height4.969 INCHES NOMINAL
Contact Load Current Rating5.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Thread Length0.750 INCHES NOMINAL SINGLE PRESSURE CONNECTION
Thread Series DesignatorNPT SINGLE PRESSURE CONNECTION
Overall Length4.500 INCHES NOMINAL
Overall Diameter1.13 INCHES NOMINAL
Body StyleCYLINDRICAL
Terminal Type And Quantity2 WIRE LEAD
Voltage Rating In Volts12.0 DC NOMINAL
Electric Power Rating8.0 WATTS NOMINAL
Power Takeoff Connection TypeINTERNAL PLUNGER
MaterialCOPPER ALLOY AND ZINC CASE
Duty TypeINTERMITTENT
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 11993 available?
We can source 11993 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 11993 by Johnston Boiler obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 11993 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 11993?
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 11993?
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.