Product Description


HFD 156 Series

Radio Interference Suppression Filter

Three-phase, 3 x 480 Vac, 3 x 3 - 3 x 16 A, leakage current 1.00 mA, for general requirements


  • Increase in the interference immunity of the connected consumer

  • Efficient filter effect against line-bound interference emissions

  • Single-stage filter concept

  • DIN rail mounting

  • For general requirements


EMI Filters

Passive EMI filters from BLOCK are used to suppress the electromagnetic interference between the network and frequency inverter in the frequency range between 150 kHz and 30 MHz. They ensure compliance with the limit values required under residential and industrial standards. In the line filter design, the passive EMI filter can also be combined with a line reactor, which also reduces low-frequency interference (harmonics).

  • Attenuation of radio interference voltages >=150 kHz
  • Compliance with the limit values required under residential and industrial standards
  • Flawless operation of 30 mA/300 mA ground fault circuit breakers through the use of low-leakage current filter solutions
  • Increased interference immunity for the system


Radio interference suppression filter for mains-side interference suppression of power supplies and electronic devices.


Rated Voltage

3 x 480 Vac

Degree of Protection

IP 20

Leakage Current

1.00 mA

Rated Current

3 x 3 - 3 x 16 A

Voltage Range

3 x 0 - 480 Vac

Ambient Temperature

max. 45 °C


DIN EN 133200

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



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