The Marley Engineered Products 4520-2059-000 is an OEM 160-230F AUTO Limit Switch designed for high-accuracy temperature monitoring in HVAC heating systems

optimizing service time for field contractors

this SPST (Single Pole Single Throw) switch opens on temperature rise

such as a clogged MERV-rated air filter

MARS 12921 Run Capacitor The Marley Engineered Products 4520-2059-000The MARS 12921 Run Capacitor is a fundamental component for maintaining the efficiency of single phase electric motors in HVAC and refrigeration systems. This 40 MFD 370V oval run capacitor is engineered for continuous duty, providing the necessary phase shift to keep compressors and fan motors running cool and stable. Built to UL 810 standards, it features a non PCB, oil filled aluminum construction and a patented internal pressure sensitive