New capillary thermostat package for reefers

The WK, WK-H and WP cold capillary mechanical switch thermostats offer accurate temperature control that are activated by temperature change in the capillary tube sensor.

The sensor is charged with a special refrigerant gas, this change is converted to travel via the bellows/diaphragm, which is actuated by the mechanical level switch closing on temperature rise. They can be used as temperature or defrost control elements with or without constant cut in.

Specific performance capabilities include operating temperatures of 0ºC – 40ºC (WK Series), -35ºC to 40ºC (WK-H Series) and -30ºC to 55ºC (WP Series). Amperage capacities vary between models with the WK-H Series featuring the higher amperage of 25A. All three thermostat models are available with or without forced-OFF and forced-ON positions and with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) switching contacts.