Softstart PSE37-600-70 1SFA897104R7000

Soft starter for three-phase motors – smooth start and protection

This soft starter, model PSE37-600-70, is an advanced device designed for the controlled start-up of three-phase motors. It provides not only a smooth start and stop but also comprehensive protection of the motor against overloads and the effects of sudden voltage changes. The device is particularly useful in applications requiring limitation of current and mechanical shocks, which translates into extending the lifespan of both the motor and the connected installation elements.

Functionality and application

The PSE37-600-70 soft starter offers a wide range of configuration options, including torque adjustment, which allows for optimizing the start-up process for different types of loads. The built-in bypass contactor minimizes energy losses after the start-up is completed, and the overload protection protects the motor from damage. Equipped with a clear display, it facilitates monitoring of operating parameters and device configuration. This makes it suitable for both industrial applications and building automation systems.

Advantages and benefits

• Versatility: Designed to operate in networks with a voltage of 208…600 V AC, making it compatible with various installations.
• Motor protection: Built-in overload protection and torque control ensure reliable protection of the motor against damage.
• Shock reduction: Smooth start minimizes current and mechanical shocks, extending the life of the motor and connected devices.
• Energy saving: Bypass contactor reduces energy losses after start-up is complete.
• Easy operation: Clear display and intuitive configuration facilitate monitoring of operating parameters and adaptation of the device to specific application needs.
• Wide power range: Supports motors up to 18.5 kW at 400 V and 15 kW at 400 V (star connection).
• Neutral display: A display with images ensures easy interpretation of information regardless of the user's language.
• Programmable current limitation: Allows for precise adjustment of start-up parameters to the characteristics of the load.
• Durability: PCB boards coated with a special coating provide resistance to aggressive environments.

Technical parameters in practice

The rated operating current of the device is 37 A at an ambient temperature of 40°C, allowing it to be used in demanding working conditions. The ability to adjust the torque allows for optimizing the start-up process for different types of loads – from pumps and fans to conveyors and compressors. Control voltage AC (100…250 V) ensures compatibility with most standard control systems. The "adjustable" tripping class gives full control over the start-up parameters, allowing them to be adapted to the specific requirements of the application.