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Machine Design

Capillary thermostat

The WK, WK-H, and WP Series of capillary thermostats, complete with mounting hardware, offer accurate temperature control, smooth adjusting, and reliability. These mechanical switches are activated by temperature change in the capillary tube. The sensor is charged with a refrigerant gas, and temperature changes are converted to travel via the bellows/ diaphragm, which is actuated by the mechanical-level switch closing on temperature rise. The devices can be used as temperature or defrost control elements with or without constant cut in.

Performance capabilities include operating temperatures of 0 to 40°C (WK Series), –35 to 40°C (WK-H Series), and –30 to 55°C (WP Series). Amperage capacities vary between models with the WK-H Series featuring the higher amperage of 25 A. All models are available with or without forced off and forced on positions and with SPST or SPDT switching contacts.

Selco Products
8780 Technology Way
Reno, NV 89521
(800) 257-3526


© 2012 Penton Media, Inc.

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