Standard protocols recommend not exceeding 1/2 PSI (14" WC) inlet pressure to avoid damaging the internal regulator components

always verify the technical datasheet of your compressor model to ensure the trip curve matches

This is an aftermarket beverage part manufactured to identical technical specifications as the original

High BTU Capacity: Rated up to 415

Marley Engineered Products 4520-2018-003 Limit Switch Standard protocols recommend not exceedingThe Marley Engineered Products 4520 2018 003 Limit Switch is a critical safety component engineered for forced air heating applications where precise thermal protection is non negotiable. This 180 degree F auto reset limit switch serves as a high limit safety cut out, functioning as a normally closed (NC) switch that opens the circuit if the plenum or heating element temperature exceeds the 180F threshold. As a genuine Marley OEM replacement part, it