3RW4026-1BB05

The SIRIUS 3RW4026-1BB05 from Siemens serves as a soft starter designed to control motor start-up processes. This device operates effectively with an insulation voltage rated to handle up to 600V. It is capable of sustaining an operational current of 25 A when the temperature is at 40 °C. The soft starter accommodates a frequency range of 50 to 60 Hz, making it versatile across various applications. Rated to work with voltages between 400 and 600V, it is suitable for a variety of electrical systems.

The soft starter supports a minimum load percentage of 0.2%, providing operational flexibility in diverse conditions. The unit includes variable settings for motor current, facilitating protection against overloads with a minimum threshold of 10A. Power losses estimated at around 8W are expected during normal operational conditions at 40°C, ensuring it operates efficiently.

For control logic, it utilizes a supply voltage of 24V AC at 50 Hz, which enables effective handling of starter functions. A red display indicates fault signals, providing quick identification of issues for maintenance personnel. Mounting options include both screw and snap-on methods, ensuring easy installation in a variety of environments. Additionally, it can accommodate wire lengths up to 300 meters, making it suitable for larger installations. The main current circuit consists of three poles, and it includes a total of two normally open contacts for auxiliary tasks.

With compact dimensions of 45mm in width, 125mm in height, and 155mm in depth, the Siemens 3RW4026-1BB05 soft starter provides a practical solution for control of motor applications.