Siemens Siemens 3RW30181BB14

Industry Description

SIRIUS soft starter s00 17.6 a, 7.5 KW/400 V, 40 c 200-480 V AC, 110-230 V AC/DC screw terminals

Modified Industry Description

SOFTSTART,

AD Description

SIRIUS 3RW30181BB14 Soft Starter, 110 to 230 VAC/VDC Coil, 3 Poles, IP20

Vendor Description

The SIRIUS 3RW30 soft starters reduce the motor voltage through variable phase control and increase it in ramp like mode from a selectable starting voltage up to mains voltage. During starting, these devices limit the torque as well as the current and prevent the shocks which arise during direct starts or wye delta starts. In this way, mechanical loads and mains voltage dips can be reliably reduced. Soft starting reduces the stress on the connected equipment and results in lower wear and therefore longer periods of trouble free production. The selectable start value means that the soft starters can be adjusted individually to the requirements of the application in question and unlike wye delta starters are not restricted to two stage starting with fixed voltage ratios. The SIRIUS 3RW30 soft starters are characterized above all by their small space requirements. Integrated bypass contacts mean that no power loss has to be taken into the bargain at the power semiconductors (thyristors) after the motor has started up. This cuts down on heat losses, enabling a more compact design and making external bypass circuits superfluous. Soft starters rated up to 55 kW (at 400 VAC) for standard applications in three phase networks are available. Extremely small sizes, low power losses and simple commissioning are just three of the many advantages of this soft starter.