Phoenix contact 3 way isolation amplifiers phoenix contact 2814469 the phoenix contact 3 way isolation amplifier mcr c uu dc is ideal for galvanic isolation and conversion of analogue standard signals and has the following signal ranges input signal 0v 10v 10v 10 voutput signal 0v 10v 10v 10 v the amplifier provides electrical isolation of analog standard signals while the module input and output are supplied via integrated dcdc converters which are electrically isolated from the mains