MARS 39220 Limit Switch While the WLF hardware is

While the WLF hardware is robust

a failed blower motor

and 45-second warm-up cycles

its 277V rating and heavy-duty contacts allow it to switch various high-voltage resistive and inductive loads within its amperage specifications

MARS 39220 Limit Switch While the WLF hardware isThe MARS 39220 Limit Switch is a versatile, high reliability solution for field service technicians needing an exact or universal replacement for furnace high limit applications. This adjustable snap disc thermostat features a temperature range of 135F to 175F with a fixed 40F differential, allowing for precise calibration to match specific internal plenum requirements. Designed as an open on rise safety device, the 39220 ensures the heating circuit