Cotherm Spa Heater High Limit Manual 24x516 Capillary Bulb Red Reset Button

Hydroquip Manual Hi Limit by Eaton Mears 275 3275 is for older spa systems with the familiar Red reset button found on many spa pack heaters from the early days. 3.0 long by 516 wide copper capillary bulb is attached with a 24 length of copper wire. Bulb inserts into thermowell, and will trip the high limit when temperatures exceed 121 degrees Fahrenheit. Single pole, Single Throw SPST 20 amp hi limit is used on Hydroquip spa controllers, among other non digital air activated spa controls.

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