also identified by model number CO-12

Operating on 120V electrical specifications

but thermal expansion protection is required

this 1 pole 40 amp 24V contactor offers a critical advantage: its silver cadmium oxide contacts are designed to minimize pitting and welding under heavy inductive loads

It is intended for use with standard threaded stem designs

White-Rodgers S84-11 Transformer also identified by model numberThe White Rodgers S84 11 Transformer is a heavy duty 120V to 24V step down transformer engineered for reliable performance in demanding residential and light commercial HVAC applications. As a Class 2 energy limiting transformer, this 40VA rated model provides a stable secondary output of 24VAC, making it the industry standard for powering gas valves, 24V thermostats, fan controls, and relay centers. Its universal mounting designsupporting plate,