... ) Exported to Pakistan,India,Thailand,Malaysia,HK etc. Model:Q2E Automatic transfer switch 4P Terminal typeIt can detect two power sources ... , it can send a signal to start generator command.Double-power Automatic Transfer Switch was consist by two units MCB or MCCB ... protection ,fire protection, over voltage, under voltage, lost phase protection. Automatic transfer switch ATS 220V Q2E 100-800A 3P,4P