Dimension QS40/QT40 is a series of 40 A, 24 Vdc DIN-rail switch-mode power supplies offered either in three-phase, 380-480 Vac or single-phase 208-240 Vac input. The input stage provides near-zero inrush and a low-input current when energized. Other features include active power factor correction, paralleling with load sharing, dc-OK contact, remote shutdown and a temperature range from –25 °C to 70 °C.