Senasys 431 series 1/2″ epoxy sealed thermostat switches are direct replacement options to many other snap disc thermostats found on the market today. With competitive pricing, faster lead times and our ability to customize our thermostats to meet your application requirements, we are sure to be a top producer of the 1/2″ epoxy sealed thermostat switches on the market today!

As an easy guide for you we have created this simple cross reference guide to help you find the replacement epoxy sealed thermal switch you need. If you have one of the part numbers listed below, simply match it to our part number. Give us a call for for more information or visit our online store to purchase one of our standard options.

Senasys designs and manufactures 1/2″ epoxy sealed snap disc thermostat switches. Senasys switches are UL Recognized. All switches are made in the United States and our direct customer service would be happy to help you find the right switch for your application.

The 1/2″ sealed thermostat switches are commonly found in refrigeration equipment and agricultural settings used as a control or limit device when temperatures rise or fall past the defined preset temperature. See how epoxy sealed thermostats are used in everyday applications by clicking here!

These cost-effective sealed reset thermostat switches are produced to exacting standards to meet the needs of original equipment manufacturers and instrument makers for a low cost, stable, repeatable switch.

Multiple mounting options, terminals, and temperatures are available. Please contact us with your application requirements for availability.

Can’t find your part number listed? Give our direct support a call with your switch or application requirements and one of our customer service representatives will assist you!

Manufacturer Senasys Thermodisc (T-O-D)
Product Name 431 Series 39T Series
Bi-Metal Disc Size 1/2″ 1/2″
Disc Type Enclosed or Exposed Enclosed or Exposed
Function Open or Close on Temp. Rise Open or Close on Temp. Rise
Temp. Range 20°F to 220°F 15°F to 220°F
Contact Configuration Single Pole, Single Throw (SPST) Single Pole, Single Throw (SPST)
+100,000 Resistive Cycle Rating @120VAC 15 Amps 10 Amps
Mounting Types Surface, Airstream, Stud & Pipe
Wire Options 14AWG to 22AWG – Any length available. 14AWG to 18AWG, 3″ to 36″ length available.
Certifications UL, RoHS & REACH Compliant UL, CSA, VDE
Country of Origin USA Mexico

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The superior controls manufactured by Senasys have a history of solid performance in many industries. From 22.5 mm selectors, to the four quadrant lighted feedback CMC controls, almost any switching need can be, and has been utilized in a variety of applications. Select a group below for more information. When you have found a switch that fits your needs, simply fax or email your specs to us and let our highly trained engineers find the most efficient configuration for your applications.

Custom Soltutions

Senasys products are designed & manufactured to meet the needs of original equipment manufacturers worldwide.

Made in U.S.A.

Senasys products are designed & manufactured in Eau Claire, Wisconsin, U.S.A.