MARS 390 Series SPDT Changeover Switch

The MARS Series 390 change-over switches are used for summer-winter change-over of electric thermo-stats in hydronic heating - cooling fan-coil units. Features: Color coded leads allow easy installation SL-8 thermostat is enclosed in sealed case for trouble-free operation Snap-acting disc type, insures accurate temperature repeatability Can be mounted in any position UL and CSA listings available