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this modern OEM replacement gasket is manufactured using advanced heat-resistant synthetic materials and does not contain asbestos
ensuring electrical and physical alignment
the system "short cycling" (turning on and off rapidly)
Automated Recovery: Features an automatic reset at 105 degrees F
Always verify the part number against your specific unit's rating plate or manual before installation
Modine 5H0730570003 Block Vent Switch this modern OEM replacement gasketThe 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),