Product Description


LR3-A Series

Line Reactor

Three-phase; 3 x 400 Vac, 3 x 4 - 3 x 900 A, 7,350 - 0,024 mH, use as line reactor, commutating reactor or PFC reactor


  • Ensuring the short-circuit voltage of 3, 4 or 5% to the mains

  • Increases the service life of consumers

  • Low ripple

  • Starting current limitation

  • Power harmonic damping

  • Use as line reactor, commutating reactor or PFC reactor

  • Bridging voltage dips

  • Peak current limitation

  • Very good corrosion protection and low noise thanks to vacuum impregnation

  • AD types with UL approval, AE types with UL Listed approval


Line Reactors

Line reactors reduce low frequency interference (harmonics) and relieve the strain on the supply network through compensation of the distortion reactive power induced by this. The connected consumers are spared by limiting the starting current, thereby increasing their lifetime. The BLOCK standard product range includes series with 3%, 4% and 5% short circuit voltage.

  • Reduction in current harmonics (THDi)
  • Protection of the grid against power line disturbances
  • Compliance with the harmonics limit values required under standards
  • Reduction in reactive power consumption
  • Reduction in losses at the line transformer and in neutral wire load
  • Increased immunity for your system from interference


Line reactor to minimize mains pollution, to reduce the reactive-power components and charging currents in the DC link capacitor and to improve the cos(phi).


Rated Current

3 x 4 - 3 x 900 A

Ambient Temperature

+40 °C


Class H


7,350 - 0,024 mH

Degree of Protection

IP 00

Short-circuit voltage (uK)

3%, 4%, 5%

Rated Voltage

3 x 400 Vac, 3 x 480 Vac


Line- and commutation reactor to UL 506, CSA 22.2


UL 506, CSA 22.2

Specifications vary between configurations. Refer to the Configurations below for more information and links to the manufacturer's website.



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