Siemens SIRIUS 3UG4 - Circuit Diagrams; Internal Circuit Diagrams

9.3.5 Circuit diagrams
9.3.5.1 Internal circuit diagrams
Internal circuit diagram 3UG4581-.AW3. insulation monitoring relay
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Wiring examples 3UG4581 insulation monitoring relays
Measuring input L can be connected to any conductor (phase or N conductor). The rated system
voltage must be U
n
≤ 400 V AC (50 to 60 Hz).
2-wire AC system
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3-wire AC system
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3UG458. insulation monitoring relay.
9.3 3UG4581 insulation monitoring relay
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 165