Softstarter PSR16-600-70 / 7.5kW at 400V 1SFA896107R7000

Softstarter – Smooth start for three-phase motors

This compact softstarter PSR16-600-70, with a power rating of 7.5 kW at 400V, is an ideal solution for limiting inrush currents of asynchronous motors. The device provides smooth starting and stopping, reducing mechanical and electrical loads on the installation. This is particularly important in applications sensitive to jerks, such as pumps, fans, or conveyors.

Features and application

The PSR softstarter is a unidirectional device designed to work with three-phase motors with a supply voltage from 208 to 600V AC. The built-in bypass contactor minimizes energy losses after the start-up is completed, and the wide control voltage range (100-240V AC) ensures compatibility with various control systems. This makes the device applicable to a wide spectrum of industrial and commercial applications. The ability to operate at temperatures as low as -25°C makes it suitable for use in harsh environmental conditions.

Advantages and benefits

• Reduction of inrush currents: Limits the inrush current during motor start-up, protecting the electrical network and extending the life of equipment.
• Smooth start and stop: Reduces mechanical loads on couplings, gearboxes and other drive elements.
• Built-in bypass contactor: Ensures minimization of energy losses after start-up and increases system reliability.
• Wide voltage range: Compatibility with various electrical installations (208...600 V AC).
• Operation at low temperatures: Possibility of operation even down to -25°C.
• Compact dimensions: Allows mounting in limited spaces.
• Simple configuration: Facilitates installation and commissioning of the device.
• Increased motor life: Reduction of mechanical stresses translates to longer motor life.

Technical parameters and application

The PSR16-600-70 softstarter is designed to work with motors with a rated current of 16A at an ambient temperature of 40°C. It can be used for motors with a power of 7.5 kW at 400V and 4 kW at 230V. The IP20 protection class provides protection against touching with foreign objects with a diameter greater than 12.5 mm and against moisture. The device is designed for mounting inside electrical enclosures and does not require additional protection against weather conditions. Thanks to its construction and functionality, the PSR softstarter performs perfectly in applications requiring smooth starting and stopping of asynchronous motors, such as:

• Pumps
• Fans
• Conveyors
• Compressors
• Mixers
• Gate drives

Additional information

The PSR16-600-70 softstarter is characterized by an adjustable tripping class, which allows you to adapt its operation to the specific requirements of the application. The lack of a built-in motor overload protection requires the use of additional protection in the electrical installation. The device complies with safety standards and has a NEMA 1 protection class.