MARS 39042 Limit Switch 320735-701 with a factory default typically

with a factory default typically set at 10:1 for standard responsiveness

The valve’s 24 VAC operation and standard NPT connections allow for a straightforward swap-out during service calls

or oily industrial settings

of the Flo-Con A8 series

Enhanced System Logic: Integral 1 NC auxiliary contact simplifies the design of holding circuits and safety overrides without requiring add-on blocks

MARS 39042 Limit Switch 320735-701 with a factory default typicallyThe MARS 39042 is a professional grade Manual Reset Limit Switch designed for high temperature safety across commercial and residential HVACR systems. This SPST (Single Pole Single Throw) switch is engineered to open on temperature rise at a fixed 240F cut out temperature, providing a critical secondary safety layer for furnace plenums and air handling units. Operating within a 120 240V rating and supporting 5 to 10 Amps, it replaces standard 3 4 inch