3RW4026-1BB14, Soft Starter, 11 kW, 25 A, 200 to 480V AC

Siemens 3RW40 Soft Starter Series – Overview

Siemens 3RW40 soft starters are advanced compact motor starting solutions designed for smooth starting and stopping of three-phase asynchronous motors in industrial applications. The 3RW40 series focuses on reducing mechanical stress, limiting inrush current, and providing enhanced motor protection compared to basic soft starters. With integrated bypass functionality and flexible configuration options, Siemens 3RW40 soft starters are well suited for pumps, fans, compressors, conveyors, and general industrial machinery requiring reliable and efficient motor starting.

Product Description: 3RW4026-1BB14

The Siemens 3RW4026-1BB14 is a SIRIUS 3RW40 series soft starter in size S0 designed for three-phase motor soft starting on supply voltages from 200 to 480 V AC. It is rated for a continuous operational current of 25 A and supports motor power up to 11 kW at 400 V (5.5 kW at 230 V in standard connection). Control supply for the device is 110–230 V AC/DC. This model provides two‑phase thyristor control with adjustable start-up voltage (approx. 40–100% of supply) and adjustable current limiting, enabling controlled torque and reduced inrush for pumps, fans, conveyors and other industrial machinery. The unit includes integrated bypass contacts to minimise power loss after start-up and built-in solid-state motor overload / intrinsic device protection. With an IP20 enclosure and compact DIN-rail compatible form factor, the 3RW4026-1BB14 is suitable for panel-mounted motor control cabinets where space is limited and reliable, repeatable soft starting is required.

Key Soft Starter Attributes