Phoenix Contact QUINT SFB 48 V DC, 10A Power Supply The Phoenix Contact QUINT SFB 48 V DC, 10A Power Supply is the latest offering in the QUINT SFB power supply line. With a worldwide input voltage range of 85-264 V AC, 90-350 V DC, and adjustable output voltage of 30-56 V DC, the QUINT SFB 48 V DC extends the range of applications where Selective Fuse Breaking (SFB) technology can be implemented. The Phoenix Contact QUINT SFB 48 V DC Power Supply features a 13 A Power Boost to provide ample current for starting additional loads, as well as an indication of both DC OK and Power Boost Modes. Learn More