Siemens SIRIUS 3RW55 Equipment Manual page 292

Soft starters and solid-state switching devices

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Example circuits

A.1 Main circuit connection

Feeder assembly

Connect the 3RW55 or 3RW55 Failsafe soft starter at its terminals to the motor feeder between

the motor starter protector and the motor. This achieves coordination type 1.

Motor starter protector (e.g. 3RV2 or 3VA)

3RW55 or 3RW55 Failsafe soft starter

Protective conductor

SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters

Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006

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Sirius 3rw55 failsafe