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CSM Current Clamp

Simple current measurement with current clamps

Type 20 A | 200 A | 500 A | 1.000 A

The CSM Current Clamp is a ready-to-connect solution for current measurements up to ±1,000 A. With the integrated supply module, the current clamp can be installed quickly and easily.


  • Current measurements up to ±1,000 A (also in HV environments)
  • Sampling rates up to 1 MHz
  • TEDS support according to standard IEEE 1451.4
  • Fast installation due to integrated supply module
CSM Current Clamp
CSM Current Clamp


The CSM Current Clamps are suitable for high-precision measurements of currents up to ±1,000 A with signal frequencies up to 1 MHz.

The current clamp can be quickly and easily attached to the power cables to be measured. The integrated supply module contains the cables for the necessary supply voltage. This allows the CSM Current Clamp to be used quickly and flexibly.

Up to four CSM Current Clamps are connected to one measurement module of the CSM AD4 ECAT MiniModule series.

The current clamp ensures galvanic isolation between test setup and measurement technology. This makes the CSM Current Clamps also suitable for applications in 48 V electrical systems and HV environments.

Also available as CSM Supply Unit HIOKI for customer to use their own Hioki current sensors. See here for more details.

Technical Data

Current Clamp

Designation 20 A_20 200 A_20 500 A_20 500 A_50 1,000 A_50
Nominal current
for permanent operation
20 A DC or AC RMS 200 A DC or AC RMS 500 A DC or AC RMS 500 A DC or AC RMS 1,000 A DC or AC RMS
Input measurement
up to ±40 A DC up to ±400 A DC up to ±770 A DC up to ±1,000 A DC up to ±1,700 A DC
Sensivity ±100 mV/A ±10 mV/A ±4 mV/A ±4 mV/A ±2 mV/A
Threshold frequency 2 MHz 700 kHz 500 kHz 200 kHz 100 kHz
Maximum cable diameter 20 mm 50 mm
Operating conditions
Operating temperature range -40 °C to +85 °C
Pollution degree 2
(W × H × D)
approx. 153 × 67 × 25 mm approx. 238 × 116 × 35 mm

Supply module

Designation 20 A 200 A 500 A 1.000 A
Power supply Externally, with UBat of the vehicle.
With active reverse polarity protection
Minimum 10 V DC (-10 %)
Maximum 32 V DC (+10 %)
Power consumption
6 W 7.5 W 9 W 9 W
Power supply Banana plugs
to measurement module
LEMO 1B 8-polig, Code G
Operating temperature range -40 °C to +85 °C
Protection class IP65
Dimensions (w × H × D) approx. 111 × 60 × 31 mm
Current clamp
Current clamp type 500 A
Supply module
Supply module
CSM Curret Clamp in handy storage case
CSM Curret Clamp in handy storage case


The CSM Current Clamp is suitable for fast and uncomplicated current measurements, both in 12 V / 48 V vehicle electrical systems and in HV environments.

If the voltage is additionally measured with measurement modules of the CSM AD4 ECAT MiniModule series, power calculations can also be performed with the Vector CSM E-Mobility Measurement System.



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