... step load ban variable adjustment.The digital meter displays the line voltage, line ampere, frequcy, power factor(optional) and power ... -400KWRated Load0-400KWPhaseSingle or Three Phase(either one)Voltage Rating180-240V/380-440VHz50/60Load steps8 steps including ... heating elements with cooling fins.DIGITAL METERINGPower monitoring meter displaying the amper, voltage, KVA, KW, with funiction of logging ...