Siemens 3RW5547-2HA14 7.5kW Soft Starter

Siemens 3RW5547-2HA14 is a SIRIUS 3RW55 high-performance soft starter (not a DOL starter) designed for 3-phase 200–480 V AC motors with a rated operational current of 470 A and 110–250 V AC control supply (spring-type terminals). It provides soft start and soft stop with adjustable ramp functions to reduce mechanical stress, limit starting current, and improve motor protection, and it includes an integrated bypass contact system for efficient continuous operation. For typical sizing, the official data shows motor power up to 250 kW at 400 V (in-line) (also 132 kW at 230 V), and it can be expanded with optional communication modules such as PROFINET, PROFIBUS, Modbus RTU/TCP, and EtherNet/IP for easy PLC/SCADA integration.