SIPLUS S7-1500, System power supply PS 60W 120/AC 230 V DC, supplies the backplane bus of the S7-1500 with operating voltage -40...+70°C start up -25°C with conformal coating based on 6ES7507-0RA00-0AB0 Just like the CPU, the power supply is also protected against extreme ambient conditions. Regardless of whether you need an expanded temperature range, protection against humidity and condensation or physically, biologically and chemically active substances. With SIPLUS extreme, the supply of power is also reliably guaranteed even in harsh ambient conditions