TYPE OS-HM72-445W OS-HM72-455W OS-HM72-470W Max Power: 445W 455W 470W Open Circuit Voltage: 49.56V 49.85V 50.31V Max Power Voltage 41.21V 41.82V 42.69V Short Circuit Current 11.32A 11.41A 11.53A Max Power Current 10.8A 10.88A 11.01A Number of Cells 144(6*24) 144(6*24) 144(6*24) Size of Cells (mm) 166*83 166*83 166*83 Dimensions(mm) 2094*1038*35 Maximum system voltage 1500VDC Junction Box Protection IP67 Cables 4mm2 Connector MC4 Max wind load 2400Pa Max snow load 5400Pa Operating Temperature -40 ~+85 Power Tolerance ±3%