Siemens sitop select power supply 4 channel 24v dc 10a din rail siemens 6ep1961 2ba00 a din rail mounted power supply that has four channels and a 24v dc 10a output the output current is adjustable via potentiometer from 2 to 10a output current circuits are monitored and any circuit that presents an error is switched off siemens 6ep1961 2ba00 sitop select 24vdc 10a