including Robertshaw 41-401 and Honeywell Q4100C9042

and contactor coils

fitting seamlessly into tankless water heater or storage tank setups requiring CSA certified performance up to 250°F

hermetically sealed tip to protect the sensing element from moisture

making it suitable for modern high-pressure R-410A HVAC systems

Johnson Controls R310AD-1 Sensing Switch Els PW 17895 including Robertshaw 41-401 and HoneywellThe Johnson Controls R310AD 1 Sensing Switch is a critical component for contractors looking to eliminate nuisance lockouts in commercial HVACR systems. Built with a solid state normally open switch, this device detects alternating current (AC) flow in a single circuit without direct electrical connection, providing a 0. 5 ampere fixed trip point. It is specifically engineered to interface with low voltage control circuits, making it the standard