Honeywell · Electronic Components
M557T039B049J
Switch, Thermostatic
Part NumberM557T039B049J
ManufacturerHoneywell
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-090-6715 (NSN)
Federal Item NameSWITCH,THERMOSTATIC
Federal Supply Class5930 — Switches
Precious Material And LocationCONTACTS SILVER
Contact Stimulus Rating50.00 ACTUATION POINT NOMINAL DEGREES FAHRENHEIT AND 40.00 DEACTUATION POINT NOMINAL DEGREES FAHRENHEIT
Contact Voltage Rating In Volts28.0 DC AT SEA LEVEL SECOND VOLTAGE
Overall Length1.076 INCHES MINIMUM AND 1.108 INCHES MAXIMUM
Precious MaterialSILVER
Contact Load Current Rating6.0 AMPERES RESISTIVE LOAD FIRST VOLTAGE
Media For Which DesignedGAS OR LIQUID
Temp Sensing Element TypeINTERNAL SENSOR
Overall Height0.605 INCHES MAXIMUM
Unthreaded Mounting Hole Diameter0.108 INCHES MINIMUM AND 0.122 INCHES MAXIMUM
Contact Action StimulusINCREASE
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 M557T039B049J available?
We can source M557T039B049J 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 M557T039B049J by Honeywell obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M557T039B049J 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 M557T039B049J?
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 M557T039B049J?
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.