ATV310HU22N4E variable speed drive ATV310 – 2.2 kW – 3 hp – 380…460 V – 3 phase. his Easy Altivar 310 drive is a frequency inverter for three-phase asynchronous motors. Its protection index is IP20. It works at a rated power up to 2.2kW/3HP, and a rated voltage from 380V to 460V AC. Its compact size, robust design and ease of installation, based on the principle of plug and play and its integrated functions make it particularly suitable for applications involving industrial machines and certain consumer machines.