Soft starter SIRIUS 3RW40 for standard applications for the soft starting and ramp-down of three-phase asynchronous motors. The integrated bypass allows a very compact construction and ensures low heat dissipation in the control cabinet. Intelligent monitoring functions protect the soft starter against overheating and the motor against overload. In addition, you can limit the current during startup to a settable maximum value.
May be integrated into a motor control system using other Sirius control gear products, e.g. 3 pole circuit breakers from the 3RV10 range (see Control Gear section)
Two phase control, plus soft starting and stopping of three phase asynchronous motors
Low power loss
Adjustable start-up voltage between 40 to 100% of working voltage
Integrated bypass contacts
DIN rail mounting
Compact design and dimensions
Status indication
Solid-state motor overload and intrinsic device protection
Adjustable current limiting
Optional thermistor motor protection (up to size S3)
Integrated remote reset (up to size S3)
Integrated 'self-hold' and 'end of start-up' auxiliary contacts. The self-hold contact is used for interlocking when controlled by a means of a simple 'on-off' pushbutton set up. The 'end of start up' signal may be used to operate other pieces of plant, such as a pump
Ideal replacement for DOL and Star-Delta starters