Usage Tips:Please noted: 63A With N 220V for 3*220V+N, Dispaly each phase 220V. Three phase Voltage Current Relay Protector 63A 220V 3P+N Over Under Voltage Relay Current limiter adjustable. Over-voltage protection: Adjustable .Under-voltage protection: Adjustable .Over-Current protection: Adjustable. Asymmetry protection. Phase squence protection. Active time and reconnect time adjsutable. Voltage and current can be manually calibrated Code: Parameter, Value P1: Power , 1-500S U1: Over Voltage , 230-300V U2: Recovery Voltage , 220-295V U3: Recovery Time , 1-500S U4: Power Off delay Time , 0.1-30S U5: Under Voltage , 140-210V U6: Recovery Voltage , 145-215V U7: Recovery Time , 1-500S U8: Power Off delay Time , 0.1-30S U9: Voltage Deviation , -9.5 to 9.5% U10: Asymmetry , 20-99V U11: Phase squence protect , on/off C1: Over Current , 3-63A C2: Recovery Time, 1-500S C3: Power Off delay Time, 0.1-30S C4: Current Deviation, -9.5 to 9.5% C5: Continues Over Current Times, 1-20 off size: 91 x 67 x 90mm Material: PC plastic colour: grey + white Package Contents: 1 x Voltage protector Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.