Schneider Electric ATV310HU55N4E Easy Altivar 310 variable speed drive 5.5 kW heavy duty / 7.5 kW normal duty 380-460 V 3-phase. The Schneider Electric ATV310HU55N4E is an Easy Altivar 310 variable speed drive rated 5.5 kW / 7.5 hp in heavy duty and 7.5 kW / 10 hp in normal duty, fed from a three-phase 380...460 V network. The ATV310HU55N4E supplies 12.6 A continuous output current in heavy duty and 16.0 A in normal duty, with 18.9 A transient current for 60 s, an output frequency range of 0.5...400 Hz and a switching frequency adjustable from 2 to 12 kHz. Control laws include voltage/frequency ratio, quadratic U/f energy saving and sensorless vector control (SVC), and Modbus RTU communication is standard on the front RJ45 port. The unit is supplied without EMC filter, is protected to IP20 (IP4X on top), measures 184 x 140 x 151 mm and weighs 1.8 kg. It is well suited to water and wastewater pumping, HVAC fans, food processing machinery and textile lines.