PS3500 series modules are installed on 3- or 6-position backplanes. They provide an interruption-free power supply of maximum 45 or 90 A. Battery buffering is possible, with the power modules acting as an intermediary between the batteries and the rest of the powered network. The diagnostic module continuously monitors the condition of the PS 3500 module. It issues alerts and alarms in case of deviations outside the tolerance range. The power supplies reach a very high efficiency of up to 91 % and have a fanless design. They can be used in environments of up +70 °C.