Automatic transfer switch is used for hospital, bank and other important places TypeCircuit ... , 25, 32, 40, 50, 63TSQ4-63/3P, 4PTSM21 MCCB63AAC 400VTSQ4-100/3P, 4PTSM21 MCCB100AAC 400V16, 20, 32, 40, 50, 63, 80 ... , 630TSQ4-800/3P, 4PTSM21 MCCB800AAC 400V630, 700, 800 TSQ4 Automatic Transfer Switch