Lochinvar & A.O. Smith 100111057 Switch 326058-757 Engineered with silver-plated contacts

Engineered with silver-plated contacts

making it a critical component for restoring PSC blower motor and 120V HSI ignition sequences in compatible HVACR units

As a permanent split capacitor (PSC) motor

Fail-Safe Operation: Mechanical spring return ensures the valve returns to the stem-up position during a loss of pilot air

and persistent rollout switch tripping

Lochinvar & A.O. Smith 100111057 Switch 326058-757 Engineered with silver-plated contactsThe Lochinvar & A. O. Smith 100111057 Blocked Inlet Switch is a critical safety component designed for high efficiency commercial water heaters and boilers, including the Cyclone Xi BTH and Shield series. This normally closed (NC) pressure switch monitors the combustion air intake, ensuring the blower assembly receives adequate airflow for safe operation. Engineered with a dedicated 0. 85" W. C. trip point, it immediately breaks the safety circuit if