It comprises phial, capillary tube and diaphragm. Following an increase in temperature at the phial, the liquid expands in the capillary tube, causing the diaphragm to move. This movement activates a snap-action switch, causing opening or closing of switch contacts.


With in differential the thermostat keeps the temperature of any fluid/system regulated which is heated by, electricity, gas, oil or air


Temperature Setting 70 TO 350 °C
Differential 6-7 °C
Rated Load 16 Amp, 250 V a.c, 50 Hz a.c
Capillary length 500 mm to 1000 mm
Sensing Bulb Diameter Ø6 mm/ Ø3mm
Sensing Bulb Length 60 mm to 175 mm
Wiring 6.3mm Push On terminals