All of our domestic immersion heaters are fitted as standard with an RDT combined thermostat and resettable safety cut-out. Our RDT resettable thermostats provide a further level of protection against boiling to steam, to achieve compliance with BS EN 60335-2-73 standards, without the need to drain down the hot water cylinder.
Our RDT resettable thermostats have an adjustable temperature range from 10°C to 60°C, but are factory pre-set to the maximum 60°C for normal operation to safeguard against harmful water borne bacteria such as Legionella. Our thermostats have a manual reset which incorporates patented MFS technology to ensure single pole safety operation.