4PRO ATS-125A-4P-iRC Automatic Transfer Changeover Switch 125A 120/208V 50Hz 60Hz 1-3 Phase

- 3 working positions: main power ON - backup power OFF; main power OFF - backup power ON; main and backup power OFF; - singleness motor drive providing smooth, reliable, low noise operation - driving motor energized only during switching operations with outstanding energy saving - distinct ON and OFF position and activity indicators - high security and reliability with working life more than 8000 times