... Waveform distortion Non additional waveform distortion Protection funcations Over-voltage, over-current, phase shortage, phase-sequence and ... Produced(Previous Year) Voltage Regulator, Circuit Breaker, AC Contactor Voltage Regulator 50,000 Pieces / Month, Circuit Breaker 200,000 Pieces ... AC Contactor 30,000 Pieces / Month Voltage Regulator 550,000 Pieces, Circuit Breaker 1,200,000 Pieces, AC Contactor ...