© Siemens AG 2010 Controls — Soft Starters and Solid-State Switching Devices Introduction Overview 3RW soft starters for standard applications 4 3RW soft starters for high-feature applications 4/2 Siemens LV 1 · 2010 3RW30 3RW40 3RW44 Order No.
Page 3RW Soft Starters 3RW30 soft starters • SIRIUS 3RW30 soft starters for soft starting of three-phase asynchronous motors • Performance range of up to 55 kW (at 400V) 3RW30 4/8 3RW40 soft starters • SIRIUS 3RW40 soft starters with the integral functions - Solid-state motor overload and intrinsic device protection and - adjustable current limiting for the soft starting and stopping of three-phase asynchronous motors • Performance range of up to 250 kW (at 400 V) 3RW40 4/13 3RW44 soft starters • In addition to soft starting and soft ramp-down, the solid-state SIRIUS 3RW44 soft starters provide numerous functions for higher-level requirements • Performance range - Up to 710 kW (at 400 V) in inline circuit and - up to 1200 kW (at 400 V) in inside-delta circuit 3RW44 4/24