Switched power supply prepared for battery connection (with safety backup) in grid box with wired connectors. Size: 159 x 42 x 97 [+/- 2 mm]. Input = 176 ÷ 264VAC, Output = 54VDC @ 1Amp with 0.3Amp for battery. SCP (Short Circuit Protection), OLP (Overcharge Protection), OVP (Over Voltage Protection), UVP (Battery Deep Discharge Protection). Optical LED signaling. For DIN rail mounting, a PSDIN1 bracket is required.