Star-delta starter I=22A 11kW SDAINLM22(230V50HZ,240V60HZ) 278336

Star-delta starter – optimizing motor starting

The star-delta starter is a comprehensive solution for starting electric motors, allowing you to limit the inrush current and reduce the load on the power supply network. This is particularly important for larger motors, where high inrush current can cause voltage drops and disruptions in the operation of other devices. Using a star-delta starter allows for smooth and safe starting, protecting both the motor and the electrical installation.

This particular set, catalog number 278336, is designed for motors with a power of 11 kW and a rated operating current of 22 A (AC-3, 400 V). It supports supply voltages of 24…690 V at a frequency of 50 Hz (230…230 V control voltage) and 60 Hz (240…240 V control voltage), making it a universal solution for various applications. Made with attention to detail, using screw connections for both the main and auxiliary circuits, it ensures reliable operation and easy installation.

Construction and application

The set includes complete wiring, which facilitates installation and minimizes the time required to start up the system. The protection class IP20 provides basic protection against accidental contact, and the compact dimensions (82 mm high, 158 mm wide and 117 mm deep) allow for mounting in a limited space. This system finds application in various industrial applications and in public buildings, wherever efficient and safe motor starting is required. Due to its design, this set is not intended for mounting on a rail.

• Inrush current reduction: The star-delta starter reduces the inrush current to about one-third of the direct current value, protecting the power supply network from overloads.
• Motor protection: Smooth starting minimizes mechanical stress on the motor, extending its lifespan.
• Versatility: The ability to operate at both 50 Hz and 60 Hz increases the range of applications.
• Completeness: Supplied with complete wiring, it facilitates installation and reduces installation time.
• Reliability: The use of screw connections ensures stable electrical connections and long-term device operation.
• Compact dimensions: Allow installation in tight spaces.

The set has 9 main normally closed contacts and 3 auxiliary normally closed contacts, allowing integration with various control and protection systems. The lack of main and auxiliary normally open contacts should be taken into account when designing the control system. Using this solution is an investment in the reliability and efficiency of the drive system.