Phase selector with voltage and current protection Rated supply voltage: AC 3*220V Max load current: 63A Current protection: 1-63A adjustable Operation voltage range: AC140V-300V Rated frequency:50/60Hz Hysteresis:Over voltage and asymmetry:5V, Under voltage:3VAsymmetry trip delay: 10s Voltage measurement accuracy: 1%(over the whole range) Rated insulation voltage: 450V Output contact: 1NO Electrical life:100000 Mechanical life: 100000 Protection degree: IP20 Pollution degree: 3 Altitude: 2000m Humidity: Lessthan 50% at 40(without condensation) Colour:White Material:PC Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * phase selector Only the above package content, other products are not included. Note: Light reflection 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.