McPherson Controls TCS3P150 is modularized design Automatic Transfer Switch, also known as ATS. With rated current of 150Amp and rated voltage of 120 VAC or 240 VAC single phase. It is electrically and manually operated. This Automatic Transfer Switch is ideal for household and telecommunication cell site use. All plastic parts used on the ATS are made with UL 94V-0 plastic to comply with the highest safety standards. Non-UL Listed Export Only, Please Call for Purchasing.