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gas-gap heat switches
We make a wide range of heat switch designs for a variety of uses, including bespoke designs to meet individual customer requirements. There are two broad categories of heat switch:

Active
These have an external absorber activated by a heater element, typically used for systems that are cycled under user control.

Passive
These have an internal absorber and automatically turn off when they cool. They are typically used for the rapid cool-down and subsequent thermal isolation of items of equipment.

Both kinds of heat switch can be filled with either 3He or 4He gas, depending on the temperature range over which operation is required.

Gas gap heat swiches
heat switches