Indoor DC Voltage and Current Sensors


HaslerRail has been serving the rail industry since 1887. With thousands of installations in service worldwide, we have built up broad, deep knowledge of energy metering and management for rolling stock. Our indoor DC voltage and current sensors are based on this experience.

Features / Benefits

  • Suitable for energy measurement
  • Current loop transmission for noise immunity
  • External shunt to adapt current to consumption
  • Insulated input terminals for limited space
  • Safe against internal arcs
  • Expert customer support
  • Worldwide after-sales service

Our ACX-A and ACX-V series transducers measure voltage and current on board rail vehicles operating at system voltages of up to 4 kVDC. All products in the series are suitable for indoor installation. Both the voltage measurement and current measurement transducers are insulated from the catenary voltage. The output signals on standard versions can interface directly with our REM energy meters.

All products in the series are accurate enough to be used for the catenary Voltage Measurement Function (VMF) and Current Measurement Function (CMF) to EU standards for energy measurement on board rail vehicles.

The ACX-A and ACX-V products can be delivered as stand-alone devices. They can also be integrated into Sécheron Hasler Group’s MODBOX® enclosures, or with Sécheron Hasler Group’s comprehensive Energy Management System, which also includes the REM102 Energy Meter with DHS and DCS.

All of our products are backed by HaslerRail experts, who provide recommendations and support throughout the project lifecycle, and Sécheron Hasler Group’s worldwide network of service locations for assistance throughout the product lifetime.

  • DC applications: 600V, 750V, 1.5KV and 3KV
  • Maximum permanent measured voltage 4000 V
  • Maximum permanent measured voltage 4000 V
  • Impulse withstand voltage 40 kV
  • Overvoltage category OV4
  • Bipolar type outputs
  • Bipolar output: maximum output current = 20mA
  • VMF, CMF Accuracy class 0.5R
  • Auxiliary supply voltage models: 24 VDC , 72 VDC,110VDC
  • Vertical & horizontal installation
  • Indoor installation
  • Protection index IP20
  • Dimensions: 190mm(H) x 155mm(D) x 80 (W)
  • Weight: 1.6 kg
  • Suitable for ambient temperature – 40°C to +70°C
  • Reference standards: EN 50463-2 / IEC 62888-2
  • Insulation material according to EN 45545-2
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