making it an ideal replacement for standard 230V HVAC/R motor applications

Is this switch compatible with 24V or 120V systems

providing a 40°F differential that ensures stable blower cycles and prevents short-cycling

This seal is typically installed at the bottom of the section ports to establish a secure fluid connection between the cast iron sections of the boiler block

Refer to the wiring diagram on the Lennox 10P17 housing

Berko 4520-2048-000 Limit Switch making it an ideal replacementThe Berko 4520 2048 000 is an OEM 135F CO Auto Limit Switch designed for high performance thermal regulation in Marley Engineered Products and QMark 900 Series B heating systems. This 2 pole limit switch operates with an automatic reset mechanism, functioning as a critical safety component that opens on temperature rise to prevent overheating. Engineered for HVACR technical specifications, it features a single pole single throw (SPST) switch action,