• Switching Mode Power Supply architecture
• High immunity to inverters high frequency noise
• Can detect power source phase reversal before motor start, also can detect Phase-loss and unbalance while motor operating or before motor start
• Suitable for main power source and motor starter circuit to prevent damage from insufficient phase or phase reversal 
• Phase sequence detection- Output contact Release while phase reversal
• Phase-loss detection - 3sec fixed tripping delay
• 3-phase voltage balance decetion - 3sec fixed tripping delay
• 1sec fixed reset delay
• Install on DIN rail and no socket require