It comprises a 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 the opening or closing of switch contacts.


Within differential, the combistat keeps the temperature of any fluid/system regulated by electricity, gas, oil, or air.


Temperature Range 30- 75 °C, 30-150 °C, 50-300 °C
Differential 6-7 °C
Rated Load 16 Amp, 250 V, 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