Siemens SIRIUS 3UG4 - Circuit Diagrams; Internal Circuit Diagrams

8.6 Circuit diagrams
8.6.1 Internal circuit diagrams
Internal circuit diagrams 3UG4625
3UG4625-.CW30 residual current monitoring relay, 24 to 240 V
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Note
3UG4625 residual current monitoring relays are suitable for operation with 3UL23 residual
current transformers for external ground-fault monitoring. The output signal of the
3UL23 residual current transformer is connected to terminals C1 and C2 of the monitoring relay.
To avoid interference injection, which could result in incorrect measurements, these connecting
lines must be routed as parallel as possible and twisted, or shielded cables must be used.
3UG4625 residual current monitoring relay with 3UL23 transformer
8.6 Circuit diagrams
SIRIUS 3UG4 / 3RR2 monitoring relay
148 Equipment Manual, 07/2021, NEB927043002000/RS-AD/005