We are manufacturer product  for customers satisfy.  Automatic Changeover Switches in Single and Three Phase up to 500 Amps  CLD (Current Limiting Device) with Auto Changeover and Auto Re-set and  AMF Panels (Auto start and stop for generator.
When main supply is resumed, the connected load is automatically shifted on mains and engine switch off system specifically for portable generators (petrol/kerosene). Low/High Voltage Controller  also manufacturer in the  company.