Softstarter PSR72-600-70 / 37kW at 400V 1SFA896113R7000

Compact Motor Starter – Softstart PSR72-600-70

This soft starter, from the PSR series by ABB, is a compact solution for smooth starting and stopping of three-phase motors. The device is designed for loads with a power of 37 kW at 400V, making it an ideal choice for both installers and end-users looking for an effective way to reduce mechanical and electrical stresses during motor start-up. The built-in bypass contactor minimizes energy losses and simplifies connections in the starting circuit.

Construction and Application

The PSR72-600-70 soft starter is designed for easy installation and adjustment. Its compact dimensions allow for installation in areas with limited space. The device finds application in a wide range of industrial and commercial applications where gentle motor starting is required, e.g., in pumps, fans, conveyors or compressors. Thanks to the adjustable operating characteristics, the PSR soft starter provides optimal starting conditions for different types of loads. The ability to operate in the voltage range of 208…600V and control voltage of 100…240V AC increases its versatility.

Key Features and Benefits

• Compact size: Enables mounting in tight switchgear spaces.
• Built-in bypass contactor: Reduces energy losses after start-up is complete and simplifies wiring.
• Wide voltage range: Operation in the range of 208…600V allows for use in various electrical installations.
• Parameter adjustment: Possibility to adapt the starting characteristics to the specifics of the load.
• Low-temperature operation: Enables operation even down to -25°C, which is important in harsh environmental conditions.
• Overload protection: Although the device does not have a built-in motor overload protection, its operation contributes to reducing the mechanical and electrical load on the motor during start-up, which indirectly affects its lifespan.
• Universal control voltage: Support for control voltage 100-240V AC ensures compatibility with various control systems.
• Trip class: Adjustable trip class allows for precise adjustment of the soft starter's operation to a specific application.

Operating Parameters

The PSR72-600-70 soft starter is characterized by a rated operating current of 72A at an ambient temperature of 40°C. The IP10 degree of protection provides basic protection against access to the internal elements of the device. The device operates at a frequency of 50/60 Hz and has a NEMA 1 degree of protection. It is important to select appropriate overcurrent protection devices cooperating with the soft starter, in accordance with the manufacturer's recommendations and applicable standards.