Three-phase inductor

A three-phase inductor (also known as an impedance component or reactor) is an inductive electromagnetic component consisting of three windings (coils or solenoids) made of conductive wire with a magnetic metal-plate three-column E-I core.  The magnetic part of the core is designed so that the I is separate from the E and there is a calculated air gap between them that ensures the desired inductance value.

These inductive components are mainly used in industrial applications as an alternating current filter, a current limiter in electrical circuits (power factor correction capacitor banks, electronic power supplies, rectifier bridge circuits, electricity distribution systems, or industrial electrical systems), and as a inrush current limiter for three-phase electric motor start-up systems.


Correct sizing and calculation analysis depend on the type of use and the working voltage and current parameters.

Get in touch to find out more about our products and ask for a quote or cost information. Our specialist staff are on hand to provide you with all the information you need.


Technical features

The three-phase inductors we supply feature the following:

  • Inductance: as per customer specification
  • Rated current: as per customer specification
  • Frequency: 50-60 Hz
  • Operating temperature: 40 °C
  • Protection class: IP00 (exposed)
  • Insulation class: F (155 °C)
  • Isolation test voltage: 5000 V

Manufactured in compliance with standards CEI 61558 and CEI 60076, three-phase inductors include the use of conductors such as:  wires and strips, made of copper and aluminium.

They are designed and built taking into account the customer’s needs, such as: footprint and layout of mechanical components, cooling systems, electrical efficiency and consequent levels of admissible losses.



Alongside its transformers and autotransformers, our company also manufactures a comprehensive range of inductors tailored to customers’ specifications.

This kind of component is used in a multitude of areas in industrial electrical engineering.

Our products span the most diverse fields of application:

  • Engine start-up systems
  • Drives and inverters
  • Wind/solar power
  • Filtering (grid or output)
  • Short circuit or current limitation
  • Smoothing, conversion and rectification systems
  • Power factor correction
  • UPS’s

Our long-term experience in the industry enables us to produce accurate and reliable electromagnetic components.