Siemens Soft starter Motor rating at 400 V 18.5 kW Motor rating at 230 V 11 kW 400 V/AC Rated current 38 A 3

Siemens Soft Starters 3RW30/3RW40

The electronic soft starters 3RW from the Sirius system modular range are designed for smooth starting as well as starting and stopping three-phase motors. They protect the mechanical power transmission components of the machine during startup by reducing the starting torque and efficiently safeguard the network against dangerous spikes through reduced current consumption. By continuously increasing the motor voltage, the network, motor, and load are preserved and optimally protected against overload.

The 3RW soft starters are narrow (45 or 55 mm), cost-effective, and can be easily combined with Sirius contactors, circuit breakers, and overload relays.

Features:
3RW30: Optimal adaptation to the drive task through individual potentiometers for starting voltage (40-100%) and ramp-up time up to 20 seconds, soft start only, space-saving installation with simple 4-wire motor connection, 70% space savings compared to star-delta combinations, control supply voltage 110 - 230V AC/DC.