ATO single phase auto AC voltage stabilizers with capacity rating from 500VA to 50kVA, 140V to 260V input voltage range, high performance and compact size, are ideal for the home purpose. ATO 3 phase auto AC voltage stabilizers with capacity rating from 8kVA to 300kVA, 175V-265V (phase voltage)/304V-456V (line voltage) AC input voltage range, 380V