3RW4026-1BB05

The Siemens 3RW4026-1BB05 is a high-quality soft starter designed for seamless integration into various industrial motor control applications. This SIRIUS soft starter is engineered to facilitate smooth start and stop operations for three-phase motors, ensuring a reduction in mechanical stress and an increase in the lifespan of your machinery.

With a rated operational current of 25 A at 40 °C and the capability to manage motors up to 15 kW at 500 V, this soft starter is a robust solution for medium-sized motor applications. It operates effectively within a voltage range of 400-600 V AC and is equipped with a 24 V AC/DC control supply voltage, making it versatile for different power supply systems.

The 3RW4026-1BB05 comes with an integrated bypass contact system and thyristors, which contribute to its efficiency and reliability. It also boasts intrinsic device protection and motor overload protection, ensuring your equipment is safeguarded against potential electrical issues.

This soft starter is designed with user convenience in mind, featuring adjustable current limitation and an external reset function. The absence of an inside-delta circuit and motor brake output simplifies the device for straightforward use in various industrial settings.

Constructed to meet the demands of industrial environments, the 3RW4026-1BB05 has a compact form factor with dimensions of 45 mm in width, 125 mm in height, and 155 mm in depth. It can be easily mounted using screw and snap-on methods, and it supports a maximum wire length of 300 m for flexible installation options.

The device is also designed to withstand challenging conditions, with an operational temperature range of -25 to +60 °C and a storage temperature range of -40 to +80 °C. It is rated at an insulation voltage of 600 V and has a degree of pollution of 3, according to IEC 60947-4-2, ensuring reliable performance in various industrial environments.

For those seeking a dependable and efficient solution to manage the start-up of their motors, the Siemens 3RW4026-1BB05 soft starter offers a blend of performance, protection, and ease of use, making it a valuable addition to any industrial motor control system.

• Starting of three-phase induction motors in applications to reduce mechanical stress on the motor and the driven machine
• Gradual ramp-up of motor speed to prevent water hammer in pump systems
• Soft stopping of motors to avoid abrupt halting in conveyor belt systems
• Control of fans in HVAC systems to ensure a smooth start and reduce noise
• Starting of compressors in refrigeration systems to minimise electrical peaks
• Use in textile machinery to provide gentle acceleration and deceleration of spinning machines
• Application in material handling equipment to extend the lifespan of mechanical components
• Integration in woodworking machinery to control the start-up of saws and planers
• Soft starting of mixers and grinders in the food and beverage industry to prevent ingredient splashing
• Managing the start-up of packaging machines to ensure precision and reduce wear