Robertshaw 5500-134M Infinite Switch 5% Black Dial 120V

The Robertshaw 5500-134M Commercial Infinite Switch 120V 5% is a control component used in commercial equipment to regulate variable heat output during operating cycles in HVAC systems. It operates with compatible heating elements by adjusting electrical flow through rotary control settings, allowing controlled temperature response in food service and processing applications. The black dial interface supports clear manual adjustment. It works as an essential part of the equipment control assembly by regulating heating performance and reducing irregular temperature operation in commercial conditions requiring stable thermal control.