Modine 5H0730570003 Block Vent Switch Whether you are performing a

Whether you are performing a boiler replacement or a routine water heater repair

ensuring accurate motor circuit engagement and disengagement

Optimized Form Factor: Compact design allows for seamless electrical connector installation in crowded control compartments and HVAC housings

Is the 90-291Q suitable for 240V coil applications

Using a genuine McDonnell & Miller 354370 during routine maintenance helps mitigate these risks

Modine 5H0730570003 Block Vent Switch Whether you are performing aThe Modine 5H0730570003 Blocked Vent Switch is a critical safety component engineered to monitor flue gas temperatures and prevent hazardous operating conditions. This genuine OEM replacement part is specifically designed for Modine PD400 and BD400 unit heaters, serving as the direct functional successor to the legacy 5H73057 3 model. Operating as a manual reset safety switch, it is calibrated to trip when vent temperatures reach 200F (93C),