Fixed temperature bulb and capillary thermostats has a liquid filled bulb with a temperature set point that expands the diaphragm actuating a snap action switch. Adjustable and fixed temperature models available. Direct from USA manufacturer. Custom options available.

Original equipment manufacturers worldwide use fixed temperature bulb and capillary thermostats designed and manufactured by Senasys Inc. No matter which style or model you choose, all of the capillary thermostat switches operate using the same physics. A fluid is encapsulated in a metal and when the temperature changes the fluid either expands or contracts. This fluid change moves a diaphragm which is in touch with a snap action switch and either opens or closes a circuit.

Commercial food equipment manufacturer’s incorporate Senasys’ high quality, UL approved thermostat switches and control. Other important applications are pool and spa, HVAC equipment and products for the home.

All of the Stemco, Cemco and Essex International Capillary Thermostat switches built by Senasys can also be built to customer specifications. This insures you get the exact control you want without paying for features you don’t need.