SIRIUS 3RW40
The SIRIUS 3RW40 is the top star among all standard soft starters! Thanks to its innovative control principle, it is not only the world’s only two-phase-controlled soft starter in the power range from 5.5 kW (with 400 V) to 250 kW (with 400 V), but is also the smallest available solution thanks to its particularly compact design. It facilitates space-saving and transparent control cabinet arrangements and is thus more than a supplement of our two-phase-controlled SIRIUS 3RW30 soft starter range.
The SIRIUS 3RW40 Basic Performance soft starters are suitable
for soft starting and stopping of three-phase asynchronous
motors.
Due to two-phase control, the current is kept at minimum values
in all three phases throughout the entire starting time and
disturbing direct current components are eliminated in addition.
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 the starting of
explosion-proof motors with “increased safety” type of protection
EEx e according to ATEX Directive 94/9/EC.
