This single-pole single-throw (SPST) vacuum switch is factory-set to trip at -

If your control signal is 24V AC/DC

This SKU specifically covers the replacement 8-3/4" Linkage Rod

What causes these coils to burn out

MARS 61755 Contactor This single-pole single-throw (SPST) vacuumThe MARS 61755 is a professional grade 2 pole definite purpose contactor engineered for demanding HVAC and refrigeration applications. Rated for 40 FLA (Full Load Amps), this 24V coil contactor provides high performance switching for compressors, motors, and heating elements. Featuring silver cadmium oxide contacts, it is designed to withstand the arcing common in inductive loads, ensuring superior mechanical and electrical life. The enclosed body