Micro Snap Action Switches, Float Switches, Air Flow Sensors…

Best Snap Acting Switch for HVAC Industry

HVAC Fan ControlsSenasys manufacturers a large variety of snap acting switches for HVAC systems:

  • JMP snap action micro switch
  • Bi-metal temperature switches
  • Bulb and capillary thermostats
  • Mechanical line voltage thermostats

Switches found in HVAC systems are mechanical controls that are based on physics. More times than none, most HVAC systems have a requirement for these controls rather than an electronic type controller because failure modes are limited versus an electronic control. Rather than an electronic controller using inputs/outputs to communicate with the HVAC equipment, our snap acting switches react to change in the environment causing the equipment mode to change as a reaction.

For more information about the snap acting switches Senasys offers to the HVAC industry, continue reading below.

If you have a heating or cooling application, click here to contact our technical support team.


JMP Snap Action Micro Switches

Our JMP micro switch product line are snap acting micro switches that can be paired with an actuator to sense environment change, such as air flow or liquid level, causing the micro switch contacts to react.

Air Flow Sensing Micro Switch

The JMP sail switch is commonly used an an air flow switch. When air flow is lost in the system, the sail actuator will release the micro switch’s plunger, closing the contacts to power on a booster fan to restore air flow. Click here to learn more, or contact us!

Liquid Level Sensing Micro Switch

The JMP float switch is commonly used to sense a pre-defined liquid level, such as a dehumidifier drip pan. When the level is met, this simple float switch senses the change closing the micro switch contacts to turn on a pump to lower the water level, or open the contacts to shut the system down completely. Click here to learn more!

Temperature Sensing Switches

In addition to our JMP snap action micro switch products, Senasys also designs and manufactures a number of temperature sensing switches to control or limit HVAC equipment.

Bi-Metal Snap Disc Temperature Switches

Quality-engineered thermal sensors specifically designed for a variety of major HVAC appliances, including room unit and space heaters, air conditioning systems and wood stoves. Commonly used as a limit, when temperature within the system exceeds the defined set point, the contacts open to shut the appliance off. For more information about our bi-metal snap disc switches, click here.

Bi-Metal Duct Limit Switches

Our bi-metal duct limit switches are used to shut down HVAC equipment as well. Mounted to the outside of an air duct, the switch senses an increase of temperature within the duct system shutting down the equipment to avoid the possible travel of fire, smoke, or other harmful environments. Visit our website to learn more!

Bulb and Capillary Thermostats

Our bulb and capillary thermostat line are found to be used as limit or control in HVAC equipment. Similar to our bi-metal temperature switches, the bulb and capillary style uses a liquid filled sensing element which expands/contracts when temperature changes opening or closing the micro switch contacts. Click here to learn more!

Line Voltage Thermostats

The line voltage thermostats function like a bulb and capillary style thermostat, but are commonly used among end users to control industrial heaters, barn fans and other HVAC equipment. When temperature within the system changes, the thermostat will either turn on an industrial heater, a fan, or shut a system down. Visit our website to learn more!

For more information about our snap action switches, visit senasys.com, or contact us!

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