Phoenix contact 3 way isolation amplifiers phoenix contact 2814472 the phoenix contact 3 way isolation amplifier mcr c ui 0 dc is ideal for galvanic isolation and conversion of analog standard signals and has the following signal ranges input signal 0v 10v output signal 0 20 ma 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 3 way isolation