Modine 3H0400780001 Limit Switch 323269-701 the H91MA-4C REVB is engineered

the H91MA-4C REVB is engineered to withstand the demanding duty cycles of mechanical rooms

and specific drainage tubes

Precise Timing Control: Microprocessor circuitry ensures repeatable 30-second pre-purge and 15-second inter-purge sequences for consistent performance

The kit provides the electrical enclosure and internal relays

reducing field diagnostic time and installation errors

Modine 3H0400780001 Limit Switch 323269-701 the H91MA-4C REVB is engineeredThe 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