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Hot water cylinder thermostat

With an adjustable temperature range of between 20°C to 90°C, the Secure cylinder thermostat is suitable for mounting on either domestic hot water cylinders or large heating pipes. This cylinder thermostat is fitted to the hot water cylinder to ensure that water temperature is controlled to a safe temperature, whilst also saving energy by stopping uncontrolled heating of the hot water. This type of cylinder stat is intended for use as part of a fully pumped heating and hot water system, in conjunction with motorised zone valves, room thermostats, and two-channel central heating programmers.


  • Heating and hot water system
  • Stored hot water


  • 230V mains operation
  • Adjustable temperature range 20°C to 90°C
  • 16 Amp changeover (S.P.D.T.) contacts
  • Switching differential of approximately 8°C
  • Bimetallic sensor



Contact configuration SPDT
Operating voltage 220/240V 50/60Hz
Switch current 250V AC 16 Amps maximum
Temperature range +20 °c to +90 °C
Switching differential +8 °C Approx.
Enclosure protection IP40
Sensor system Bimetallic
Dimensions 105 x 70 x 53mm
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