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