A buffer PSU intended for uninterrupted supply to devices that require stabilised voltage of 48V DC (+/- 1V). The PSU provides voltage of U=48V DC with output current of I=2,5A + 0,5A for battery charging. In case of power decay, a battery back-up is activated immediately. The power supply is constructed on the basis of a switch mode PSU with high energy efficiency and 24/48V DC boost converter and is housed in a metal enclosure (RAL 9003) with battery space for a 2x17Ah / 12V battery A micro switch indicates door opening (front cover). Power supply: 176÷264VAC/50Hz. Power supply output: 2,5A/48VDC. Battery charging current: 0,5A. Fitting battery: 2x17Ah/12V. Efficiency: 82%. Protections: SCP, OLP, UVP, tamper (opening of the enclosure). Dimensions: W=400, H=350, D+D1=92+8 [+/- 2mm]. Surface mounted enclosure, locking – bolted (lock assembly possible). Mounted converter 24/48V.