HTRS Series

A current sensor with a split core structure, allows to install the measurement system on an existing power cable, and this without disconnection and reconnection process.

New sensor for trackside market

Compact Split-Core: HTRS


The unique technology used by LEM, remove the drawbacks of the inaccuracy of the split-core sensors, coming from the imperfect contact between the 2 core halves.

HTRS range covers from 1 A to 100 A (max) primary current sensing.
Nominal current 10 – 30 – 50 A (IPmax = 2 times nominal)

The new HTRS can be mounted using screws or the add-on Din-Rail connector.
Din rail allows different orientation of the sensor, with a 90° steps.

High accuracy compact split-core

Compact & flexible high-power measurement



  • Split core design
  • Mass < 40g
  • IP 40 design proof
  • 10 mm aperture
  • 3 Pin standard connector
  • Molex 436 500 300 
  • Screw mounting or DIN Rail option
  • Both can rotate the positioning


  • DC and AC measurement with same performance
  • Performances do not rely on the position of the cable (<0.03 % deviation)
  • Low influence from external field

Download Datasheet

Ultra compact and robust design

Ultra compact and robust design (72x26x29)
Standard secondary connector

Global HTRS draw

Accessories - Fixation

HTRS Fixation