3R40 SoftStater
The SIRIUS 3RW40 Basic Performance soft starters are suitable for the soft starting and stopping of three-phase asynchronous motors. Thanks to two-phase control, not only is the current kept at minimum values in all three phases throughout the entire starting time, but disturbing direct current components are also eliminated. This not only enables the two-phase starting of motors up to 250 kW (at 400 V), but also avoids the current and torque peaks which occur, e.g. with wye-delta starters. The SIRIUS 3RW40 soft starters are suitable for starting explosion-proof motors with "increased safety" type of protection EEx e according to ATEX Directive 94/9/EC
