Chapter 3—Installation and WiringPower Xpert C445 Global Motor Management Relay MN042003EN—October 2016 www.eaton.com 33Motor Connections with Potential Transformer(s)Figure 38. Motor Connections for Standard Overload Control Using Potential Transformers with C445BA…LegendQ1 = Cable and motor protection.Q11 = Run contactor.External CT = External Current Transformer, connect inaccordance with manufacturer’s instructions.PTC = Positive Temperature Coefficient (PTC) sensor.CH1T1 T2V1 V2 V3C445M... C445BA...CH1CH2CH1C445U...C D0 D1CH21 2 3 4 5 6 7 8PTCMOTOR3~L2L3PEL1Optional ModbusQ11Q1POTENTIALTRANSFORMERI1 I2 I3 I4 IC IC IC Q1 Q1 Q2 Q2 Q3 C Q3 PE N L(+) Us(-) Us120-240 VACL1