Always verify the part number against the furnace wiring diagram or cabinet labels

For 120/240 VAC applications

providing reliable protection against over-amping during the critical start cycle

It is designed for closed-loop hydronic systems

Sterling HVAC 11J11R00306-002 Limit Switch Els PW 17895 Always verify the part numberThe Sterling HVAC 11J11R00306 002 is a high limit safety control designed for precise thermal monitoring in gas fired unit heaters. This OEM limit switch operates on a 170 40F logic, meaning it is engineered to open the electrical circuit at a 170F temperature rise and automatically reset upon a 40F drop (closing at 130F). As a critical furnace safety switch, it prevents heat exchanger damage by interrupting the gas valve circuit if internal