This Tesla 3kW immersion heater is fitted with a dual safety protection thermostat rated at 15 amp. The unit is fully approved and tested to EN60335-2-73. The thermostat is also independently approved by BEAB to EN60730-1. Immersion heaters are manufactured and approved to EN 60335-2-73. All Immersion Heaters are supplied with a dual safety thermostat. Suitable for soft water areas. For use with copper cylinders only.