This product is part of EcoFlex ERP THERMOSTATS


ERP combistat 1-pole temperature regulation with ECO setpoint and 2-pole failsafe safety limiter with manual reset.


  • Combined control and safety functions to reduce wiring and mounting costs
  • Independent non self resetting safety
  • Guarantee of safety operation : failsafe capillary
  • Factory pre-set fixed temperature, OEM or end-user adjustable temperature
  • User detectable intermediate ECO temperature position directly on the thermostat
  • Changeover contact option on control or safety limiter to pilot signal lamp
  • Available with separate
  • Protective capillary sleeving available


Regulation : A rise in temperature causes the expansion of liquid within the bulb and capillary. The liquid acts on a bellows assembly within the housing to open and close electrical contacts

Safety limiter with capillary : The liquid within the capillary is transformed to vapour with an abnormal increase in temperature. The increase in volume acts on a mechanism to open electrical contacts. In case of damage to the capillary, the fail-safe limiter operates automatically. The limiter is manually resettable.

Technical characteristics
  • BBX
Type Single pole single throw (SPST) control with double pole capillary safety limiter
Temperature range 0 to 115°C / 32 to 239°F
Safety limiter temperature Fixed 70 - 125°C / 158 - 257°F
Rating 20A - 240V / 16A - 400V
Material Copper
Capillary length Up to 2500mm / up to 98''
Safety limiter capillary Spiralled or single / double / triple bent capillary
Technical drawings