Backersafe Immersion Heaters Elements are manufactured in High Grade Stainless Steel (The next best thing to Titanium). Complete with 18" BT7 Thermostat & Gasket Using a non re-settable BT rod thermostat, which in addition has within the head of the immersion heater a secondary single re-settable button thermostat in series with the main rod thermostat. Backersafe Immersion Heaters are manufactured to the latest Legislation of BSEN60335-2-73. Two specific clauses within this specification are aimed at eliminating the risk of boiling water. The most significant requirement is that the Immersion Heater be isolated from the mains supply, should the primary thermostat fail with the contacts closed, which would allow the water to reach a temperature in excess of 85C.
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