Single-phase inductors

In electrical engineering, inductance is a physical magnitude defined as the “coefficient of self-inductance” and it is the ability of an electrical circuit to connect with the flow of the magnetic field generated by the current flowing through it.

In practice, a single-phase inductor (or impedance component or reactor) is an inductive electromagnetic component consisting of a winding (coil or solenoid) made of conductive wire with either an air core or a magnetic metal plate core.  The core may be either a cladded core or a toroidal core.

The main use of these inductive components is as a direct current filter (filter or choke inductance) and as a current limiter in single-phase and three-phase electric circuits (power factor correction capacitor banks, electronic power supply units, rectifiers, electricity distribution systems).

Correct sizing and calculation analysis depends on the type of use. E.F.C. can design and build inductors for various applications.

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


Technical features

Our products feature the following:

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


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 electrical engineering.

Our products span the most diverse fields of application:

  • 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 according to customer specifications.