1.motor protection: overload, overcurrent, phase failure, over voltage etc. 2. measure volt, amp, watt, kwh 3. Modbus/ ... installation. Proper for 35mm DIN rail.1. Protection: ProtectionPMAC802PMAC801start overtime√√Over load √ √Over current √ √Phase failure √ √Current unbalance √ √Short circuit √ √Earth fault ...