Softstarter PSR105-600-70 / 55kW at 400V 1SFA896115R7000

PSR series soft starters – smooth start and motor protection

The PSR soft starter is a compact device designed for smooth starting and stopping of electric motors. Using a soft starter limits inrush currents, reduces mechanical loads, and extends the life of the motor and connected components. The device finds application in a wide range of industrial and commercial applications where control over the starting process is required. The PSR105-600-70 model, with a power of 55kW at 400V, is an ideal solution for motors with a rated current of 105A.

Design and functionality

A key feature of the PSR soft starters is their compact design, allowing for installation in limited space. The built-in bypass contactor reduces energy losses after the start-up phase and simplifies electrical connections. Start-up parameters are adjusted using three potentiometers, ensuring simple configuration. The device operates in unidirectional mode, offering basic functions necessary for effective motor control. Additionally, PSR soft starters can operate in a wide temperature range, even down to -25°C, making them suitable for use in harsh environmental conditions.

Applications and benefits

The PSR105-600-70 soft starter is perfect for applications such as pumps, fans, conveyors and compressors. Smooth starting minimizes mechanical stress on couplings and gearboxes, which translates into a longer life of the equipment. Limiting starting currents reduces the load on the power supply network and avoids voltage drops. The built-in bypass contactor minimizes energy losses during motor operation at constant speed. The device is compatible with various control voltages (100-240V AC), which increases its versatility.

• Limiting inrush currents: Reduces the load on the power supply network and prevents voltage drops.
• Reduction of mechanical stresses: Extends the life of the motor and connected mechanical components (couplings, gearboxes).
• Built-in bypass contactor: Minimizes energy losses during operation at constant speed.
• Compact design: Allows installation in limited space.
• Wide operating temperature range: Suitable for use in harsh environmental conditions (down to -25°C).
• Simple configuration: Parameter adjustment using three potentiometers.
• Universal control voltage: Compatible with 100-240V AC voltages.

The PSR soft starter is a reliable solution for installers and end-users looking for an effective way to control the starting of electric motors and protect them from damage.