Compact current transducers for AC and DC currents 1000A

HAR - Traction current sensors

The HAR family can be used for the electronic measurement of DC, AC and pulsed currents with galvanic separation between the primary circuit and the secondary circuit.

HAR sensors come up with an instantaneous voltage output of +/- 5 V, a bipolar power supply of +/- 15 V and a bandwidth of DC 10 kHz.

This product family is relying on the open loop hall effect technology. Traction applications are the key target of the HAR current sensors.

HAR – Features and benefits

HAR traction current sensors

Main characteristics

  • Open Loop transducer using the Hall effect
  • Galvanic separation between primary and secondary circuit
  • Insulation voltage 7000 V
  • Extended measuring range
  • Insulating plastic case recognized according to UL 94-V0


  • Excellent accuracy
  • Very good linearity
  • Low temperature drift
  • Optimized response time
  • Wide frequency bandwidth
  • No insertion losses
  • High immunity to external interference
  • Current overload capability

Typical applications

HAR current sensors are manufactured for the railway industry. They can be used either on fixed installations or onboard trains, trams, metros… 

Applications for HAR include:

  • Single or three phase inverters
  • Propulsion and braking choppers
  • Propulsion converters
  • Auxiliary converters
  • Battery chargers

HAR – Features and benefits

Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
HAR 1000-S


1000 A 15 to 15 -40 to 70 °C


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