1.Electromagnetism drive type ATS has got UL Certificate. 2.Rating current:20-5000A , ... 2P,3P or 4P 3.ATS Switch Electromagnetism drive type ATS switch(ATS) adopts twenty century advanced technology,with relible ... the places, needed double power continuedly, such as emporium, telecom, fire protection, military, mine, ship, elevator, industrial production line and so ...