RT Series of Temperature Switches have a vapour
filled thermostatic element, which consists of a sensing
bulb, capillary tube and a bellows element. The entire
element contains a charge which reacts to temperature
variations at the sensing bulb, so that pressure on the
bellows increases on rising temperature. The bellows
movement due to this increase in pressure is utilised to
operate the switch.
Available in various ranges to control temperature
upto 300°C, with high over temperature limits. RT
temperature switches are available with a selection of
capillary lengths. The vapour filled system features
small bulb sizes making installation easy.