this 150F M/R Limit Switch acts as a primary fail-safe by opening the electrical circuit when ambient heat reaches the 150°F threshold

Designed for precise integration with York centrifugal chillers

Balanced Performance: Minimizes mechanical vibration

use the included regulator cover plate

Experienced HVAC contractors recognize the Lennox 66J78 Limit Switch as a critical safety component for maintaining furnace integrity and preventing heat exchanger damage

International Environmental 71159923 Actuator Els PW 17895 this 150F M/R Limit SwitchThe International Environmental 71159923 Actuator is a high performance, 277V N C 2 position actuator engineered specifically for fan coil units and demanding HVAC applications. This high temperature actuator is the direct OEM replacement for the Erie AG14T060E1, ensuring a drop in fit with no field modifications required. Designed for heavy duty service, it features a normally closed (N C) configuration that provides fail safe operation by returning