... ISO9000 certification single phase, 220V AC 0.75KW inverter constant,variable torque mode, flexible I/O, field bus VD4 series single ... 0.75KW, rated output current: 4.7A, can add brake resistor, operation panel is removable, External Dimension: 50*190*144VD4- ... ;over load protectionOption partsextension cable of digital panel; brake resistor. frequency inverter VD4 series variable frequency inverter