6121001900, SV0037IS7-4NO, VARIABLE FREQUENCY DRIVE ,SENSORLESS VECTOR & V/HZ CONTROL,HEAT SINK OUT THE BACK MOUNTING OPTION,FIELDBUS AND CLOSED LOOP OPTIONS,HD OPERATION: - 10 - 50°C, IP00 / NEMA 1 (KIT), THREE PHASE 380 - 480 VAC (-15% - +10%), NEMA 1