Siemens SIMOCODE pro C System Manual page 213

Connection example for multifunction module
Figure 12-21 Connection example for multifunction module
Safety information on installing the 3UL23 residual current transformer:
See Chapter 14.2.5 in the Manual 3UG4/3RR2 Monitoring Relay
(https://support.industry.siemens.com/cs/ww/en/view/54397927).
NOTICE
Routing the connecting cables / using shielded cables
To avoid interference injection, which could result in incorrect measurements, route these
connecting lines parallel and twisted, if possible, or use shielded cables.
SIMOCODE pro
System Manual, 05/2019, A5E40507475002A/RS-AD/004
Mounting, wiring, connecting, system interfaces, configuration guidelines
12.2 Wiring, connecting
213