This product is part of SINGLE & DUAL THERMOSTAT HOUSING
Relevant applications:


Oil boiler control. Robust plastic housing consisting of control and limiter capillary thermostats. Available in either 2 x thermostat (twinstat) configuration or as a single BBSC capillary combination thermostat for greater accuracy and reduced temperature deviation



  • Suitable for use with or without immersion pocket
  • Pre-wired internally for ease of installation
  • Anti-tamper control stops
  • Terminals for auxiliary control circuits
  • Customised colours and branding



Control: a rise in temperature causes the expansion of liquid within the bulb and capillary.

The liquid acts on a bellows assembly within the plastic housing to open and close electrical contacts.

High limit: in case of abnormal rise in temperature, liquid expansion in the bulb and capillary of the dedicated safety limiter acts on a bellows assembly to open electrical contacts.

The limiter is manually resettable.

Technical characteristics
  • DCR
Type Dual control and regulation
Temperature range 0 to 90°C (others on request)
Safety limiter temperature 90 to 110°C, or fixed 100°C (others on request)
Rating 20A - 250V
Material Copper
Capillary length Up to 1500mm
Connections Screw and pillar terminals
Approvals CE conformity, ENEC mark according to EN 60730-1, EN 60730-2-9, ROHS conformity
Technical drawings