As a high pressure cutout switch

Industrial Build: Robust construction handles high-frequency use in PTAC motel A/C units and commercial systems

making it a standard replacement for many mid-to-high efficiency ICP chassis

as it requires a physical inspection of the burner assembly before the system can be restarted

If a flame is not sensed within the 10-second TFI window

Modine 3H0400780001 Limit Switch THPU32HP7Y As a high pressure cutoutThe Modine 3H0400780001 High Limit Switch is a critical safety component designed for heavy duty HVACR applications where thermal protection is paramount. This L165 40F limit switch is engineered to monitor excessive heat buildup, featuring a precise 165 degree Fahrenheit trip point. As a veteran grade HVAC replacement part, it functions as a primary fail safe by interrupting the electrical circuit (typically 20 amps at 120 240 VAC) when the