Frequently Asked Questions

Likely both! When a machine needs higher reliability to operate, or cannot survive a digital control failure or power interruption, engineers will use something a more reliable such as a capillary or snap disc thermostat switch.

Click here to learn more.

Click here to find a simple capillary cross reference guide to help find the correct switch.

Bulb and Capillary style thermostats use expanding liquid to open or close contacts in response to temperature changes. No matter which style or model you choose, all of the capillary thermostats operate using the same physics. A fluid is encapsulated in a metal tube (bulb and capillary) and when the temperature changes the fluid either expands or contracts. This fluid change moves the head which triggers a snap action switch either opening or closing the circuit.

Click here to learn more.

Click here for an easy installation guide.

Our bulb & capillary thermostats are 100% tested before they leave our facility, and they are ambient compensated.

Click here to learn more.

Bulb & capillary thermostats have a lot of different options available to meet your application requirements.

Click here to find a step by step guide that outlines the detail to determine the best thermostat for your application.

Our capillary thermostats are designed & manufactured at our facilities in Eau Claire, Wisconsin, U.S.A.

Because our capillary thermostats are each design to meet customer specifications, typically they are made to order with a 6-8 week lead time. We do stock some standard production models for prototype testing. Contact us for further information.