LT 4000

For DC, AC, pulse currents' measurements of 4000 ARMS nominal with galvanic isolation

LT 4000 - Current Sensors

The LT 4000 family comprises current sensors specifically designed for industrial applications. 

These sensors are notable for their excellent accuracy and swift response times, functioning efficiently with a dual power supply of +/- 24V.

To ensure their correct usage, it is essential to securely mount these components onto a panel. They are designed with a primary conductor crossing featuring a 102 mm diameter aperture.

LT 4000 current sensors utilize closed-loop Hall effect technology.

LT 4000 – Features and benefits

LT 4000 Current Sensors

Main characteristics

  • Closed loop (compensated) current sensor using the hall effect
  • Isolated 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

LT 4000 current sensors are widely employed within the industrial sector. 

These applications include:

  • AC variable speed drives and servo motor drives
  • Static converters for DC motor drives
  • Battery supplied applications
  • Uninterruptible Power Supplies (UPS)
  • Switched Mode Power Supplies (SMPS)
  • Power supplies for welding applications

LEM LT 4000 – Download & Technical Characteristic

Product Document Primary nominal RMS voltage Supply Voltage range Op. Temperature
LT 4000-S/SP24


3300 A 24 to 24 -25 to 70 °C
LT 4000-S Datasheet
4000 A 24 to 24 -25 to 70 °C
LT 4000-S/SP34 Datasheet 4000 A 24 to 24 -40 to 70 °C
LT 4000-S/SP35 Datasheet
4000 A 24 to 24 -40 to 70 °C
LT 4000-T Datasheet
4000 A 24 to 24 -25 to 70 °C


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