Siemens SIRIUS 3RW44 Softstarter

SIRIUS 3RW44 –
a Large Range of Functions for a Small Price

Thanks to its outstanding functions, the SIRIUS 3RW44 all-round talent handles diffi- cult start-up and deceleration processes in a simple and, above all, gentle manner. With its innovative torque control system, it can be used for dri- ves with a power output up to 710 kW at 400 V – respectively 950 kW at 460 V – in an inline circuit or up to 1200 kW at 400 V – respectively 1700 kW at 460 V – in an inside-delta circuit. Designed for simple handling, the functions are exceptionally easy to use.

The advantages at a glance

Optimum acceleration due to torque control

Simple and fast commissioning thanks to user-friendly display

Savings in size and costs due to optional inside-delta circuit

Simple integration in higher-level control units via PROFIBUS

Features:

• Rating at 40^oc
• Current     551 ~970A
• Power       315 ~560kW
• Voltage     415V AC
• Soft/starting and ramp down (0 ~ 20s at 40% ~ 100%)
• Torque Control
• Control voltage 240V AC
• Communication capable
• Integral bypass contactor (profibus)
• Intrinsic device protection
• Motor overload protection
• Adjustable current limiting
• Screw terminals