Duke Mfg · Electronic Components
137A
Switch, Thermostatic
Part Number137A
ManufacturerDuke Mfg
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-001-3178 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Bulb Length7.562 INCHES NOMINAL
Bulb Diameter0.250 INCHES NOMINAL
Overall Length1.656 INCHES NOMINAL
Contact Action StimulusINCREASE
Contact Adjustment TypeEXTERNAL ACTUATION POINT SHAFT
Contact Load Current Rating25.0 AMPERES RESISTIVE LOAD SINGLE VOLTAGE
Capillary Tube Length24.000 INCHES NOMINAL
Temp Sensing Element TypeCAPILLARY TUBE-BULB
Mounting MethodBRACKET(S)
Contact AdjustabilityACTUATION POINT ADJUSTABLE
Contact Voltage Rating In Volts250.0 AC AT SEA LEVEL SINGLE VOLTAGE
Vendor Part NumbersSE5300-652
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 137A available?
We can source 137A 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 137A by Duke Mfg obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 137A 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 137A?
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 137A?
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.