Three-phase Chokes (Mains Inductors) for Drives

The three-phase reactors (often referred to as mains or line chokes) designed by Alter Elettronica are essential magnetic components for the protection and efficiency of your motion control systems. Installed upstream of servo drives, they perform a dual protective function: on the one hand, they dampen transient current peaks from the power supply, protecting the drive’s electronics; on the other, they limit the injection into the grid of harmonic currents generated by the inverter’s rectifier bridge.

Choosing Alter reactors means relying on a highly engineered product. Manufactured using magnetic materials of the highest quality, they stand out for their exceptional lightness and extremely compact external dimensions. This ensures easy installation and a significant reduction in space requirements within the electrical panel, making the work of designers and panel builders easier.

Thanks to tropicalisation via resin impregnation and electrical insulation exceeding 3 kV, these reactors guarantee total reliability even in harsh environmental conditions, withstanding inrush currents of up to 200% of the rated value without any magnetic saturation.