... -2,3,4,5,6,8,11Cooling method convectionUniversal AC input/full rangeProtection: overload/ over voltage/ short circuitapprovals: UL, ETS/EMC ... . The partial enlarged detail: 5. Safety Precautions:Definition of AC input: Allocation of neutral line: For power supplies with power factor ... sets of power supplies used in 3-phase, 4-line input system, the current of the neutral line cannot be offset because ...