Williams P200400 Selector Switch the point can be trimmed

the point can be trimmed with a sharp blade to prevent mechanical binding against the housing

potentially allowing contaminants into the rest of the pneumatic loop

Can this relay be used in non-Marley equipment

Operating at a standard 120V rating

Durable steel construction maintains consistent spring tension over long-term operation in varied temperature environments

Williams P200400 Selector Switch the point can be trimmedThe Williams P200400 F145 30F Selector Switch is a critical temperature actuated control engineered specifically for Williams Forsaire Direct Vent Wall Furnaces and high performance HVAC systems. This OEM Williams P200400 component functions as a dual point thermal safety and operational interface, maintaining precise system thresholds at 145F and 30F. Built with a robust toggle mechanism, it serves as a protective switch to safeguard heat exchangers