The Columbus Electric Company RH3A Pressure Switch is a pressure‑operated device that opens or closes an electrical circuit when a defined pressure is reached. As the RH3A model from Columbus Electric, it provides automatic control by responding to pressure changes to activate or deactivate connected equipment. It is suited for installations where a reliable pressure threshold is used to initiate a control action, offering a direct, mechanical means to implement pressure‑based switching. Identified by the Columbus Electric Company name and the RH3A designation, this part is selected to match installations that specify the RH3A pressure switch.
