Automatic transfer switch is used for hospital, bank and other important places TypeCircuit ... , 100TSQ4-225/3P, 4PTSM21 MCCB225AAC 400V100, 125, 140, 160, 180, 200, 225TSQ4-400/3P, 4PTSM21 MCCB400AAC 400V225, 250, 315, 350, 400TSQ4 ... -800/3P, 4PTSM21 MCCB800AAC 400V630, 700, 800 TSQ4 Automatic Transfer Switch