Limits 25 amp rated single pole with a high-tech 121 F temperature rating. Before the valve is in a well or groove tube or immediately heater 36 capillary length, this 1/4 thick ball will get best results when installed dry as a safety device! If you know that calibration has been performed, do not attempt to perform field adjustments! Replace the new one with the bad HI limitations. Specs: High Limit Application - General High Limit Style - Capillary Ball Diameter - 1/4 Bulb Length - 4 Capillary Length - 36 Poles/Throw - Single Pole Single Throw (SPST) HI Limit Amps - 25A Electrical Connection - Screw Terminals