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Current sensors


Shunt-based current measurements under harsh environmental conditions: The CSMshunt device family extends the application range of CAN- and EtherCAT®-based AD MiniModules from CSM.

In conjunction with AD MiniModules, CSMshunts provide precise and safe current measurements from on-board power supply systems and electrical consumers in general. CSMshunts are directly looped into the current path that is to be measured. With additional voltage tap-offs, combined voltage and current measurements are possible.


  • CSMshunt with separate measurement amplifier
  • CSMshunt passive for the connection to ADMM pro HS and other measurement devices with high-accuracy 50 mV inputs
  • CSMshunt fuse for use in a vehicle's fuse box. The safety provided by the original vehicle fuse is maintained!
  • CSMshunt open with separate measurement amplifier, without housing




Operating temperature range: -40 °C to +125 °C
Robust housing
High accuracy over the entire temperature range


Measurement ranges  2,5 A 25 A 125 A 250 A 500 A
CSMshunt passive          
CSMshunt open          
CSMshunt fuse          

    not available

CSMshunt 2,5 Ampere and 25 Ampere
CSMshunt 2,5 A / 25 A with measurement amplifier.

Fields of application:

  • Acquisition and monitoring of currents in operating and stand-by phases
  • Detection of "power guzzlers" in order to avoid battery problems in standard vehicles
  • Monitoring of the sleep and wake-up behaviors of ECUs
  • Measurement of discharge/charge currents of the battery (charge balance)
  • Monitoring and logging of the battery state, in the case of vehicle transports
  • Fault analysis in the service workshop, in the case of a "break down" and other vehicles with electrical / electronic problems
  • Long-term monitoring of currents in the vehicle continuous operation
  • In conjunction with the high-voltage safe measurement modules HV ADMM 2+ and HV AD TBM 4+ and special sensor cables also suitable for use in high-voltage environments.
CSMshunt 125 Ampere und 250 Ampere
CSMshunt 125 A / 250 A with measurement amplifier.



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Spannungsmessung im Motorraum

Current and voltage measurements on electrical consumers in vehicle power supply systems

The number of electrical and electronic components in vehicles is steadily rising. In order to provide an efficient design of vehicle electronics and electrical systems, precise measurements of current and voltage are essential.

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