It offers additional protection against overheating. It is standard on heaters of 30 KW and less and not in excess of 300 volts, and optional on all others. This switch must be manually reset to make the heater operational.
Pilot lights are mounted on the control box to indicate that either a function of the heater is operating or a failure condition is present. The most commonly specified pilot lights functions are: power on, heating on, no airflow, overheating, stages on. The pilot lights' functio...Learn More
Used to protect the total load or individual stages. High Rupture Capacity type (HRC Form 1).Learn More
Mercury contactors are used for stage switching. Advantages: silent operation. Exceptionally reliable. Long life expectancy (Tested for 1,000,000 cycles) Note: Mercury contactors are position sensitive, hence it is important to specify in which position the heater is to be instal...Learn More
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H4R 1L1 map