Phoenix contact 3 way isolation amplifiers phoenix contact 2814508 the phoenix contact 3 way isolation amplifier mcr c ii 00 dc is ideal for galvanic isolation and conversion of analog uestandard signals and has the following signal ranges input signal 0 ma 20 ma 4 ma 20 ma output signal 0 ma 20 ma 4 ma 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