Compact current transducers for AC and DC currents from 200 to 1500A

HAT - Current sensors

The HAT family facilitates electronic measurements of DC, AC, or pulsed currents while ensuring galvanic isolation between the primary and secondary circuits.

These current sensors offer an instantaneous voltage output of +/- 4 V, operate with a bipolar power supply of +/- 15 V, and provide a DC bandwidth of 25 KHz.

HAT current sensors are based on Hall effect open-loop technology and are purpose-built for industrial applications.

HAT – Features and benefits

HAT current sensors

Main characteristics

  • Hall Effect measuring principle
  • Insulating plastic case recognized according to UL 94-V0


  • Easy installation
  • Low power consumption
  • Small size and space saving
  • Only one design for wide current ratings range
  • High immunity to external interference 

Typical applications

HAT current sensors are specifically designed for the industrial area and can be effectively utilized in a wide range of applications, including:

LEM HAT – Download & Technical Characteristic

Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
HAT 200-S


200 A 15 to 15 -40 to 125°C
HAT 400-S


400 A 15 to 15 -40 to 125°C
HAT 500-S Datasheet 500 A 15 to 15 -40 to 125°C
HAT 600-S Datasheet 600 A 15 to 15 -40 to 125°C
HAT 750-S Datasheet 750 A 15 to 15 -40 to 125°C
HAT 800-S Datasheet 800 A 15 to 15 -40 to 125°C
HAT 1000-S Datasheet
1000 A 15 to 15 -40 to 125°C
HAT 1200-S Datasheet 1200 A 15 to 15 -40 to 125°C
HAT 1500-S Datasheet 1500 A 15 to 15 -40 to 125°C


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