CMS3000 family AMR current sensors with 2 MHz bandwidth

The CMS3000 current sensor family is designed for the electronic measurement of alternating and direct currents and also offers a safe isolation of the measurement signal and the evaluation circuit.

The sensors offer

  • A highly dynamic bandwidth of 2 MHz
  • A measurement range of up to 3 times the rated current
  • Galvanic isolation
  • Bipolar 15 V supply voltage 
  • Various variants for different measurement ranges

This product family has five sensor variants for you to choose from.

  • CMS3005 for 5 A rated current
  • CMS3015 for 15 A rated current
  • CMS3025 for 25 A rated current
  • CMS3050 for 50 A rated current
  • CMS3100 for 100 A rated current

Advantages:

  • Very large bandwidth
  • A high signal-to-noise ratio
  • Excellent accuracy
  • A low temperature drift
  • A low primary inductivity

Due to the particularly high output voltage, the CMS3000 in the THT housing and bipolar 15 V power supply is ideally suited for low-noise measurement tasks such as: 

  • Measurement technology
  • Solar/frequency inverters
  • Switching power supplies
  • Uninterruptible power supply

General information MagnetoResistive current sensors

The MR technology enables an excellent dynamic response time and is not afflicted with a hysteresis, as is often the case in iron core-based current sensors. Due to the large signal output voltage range of up to ±7.5 V and the resultant large signal-to-noise ratio, the CMS3000 current sensor family offers sensors for PCB mounting for a rated current range of 5 A to 100 A, which are ideally suited for measurement tasks in the field of power electronics.

Product variants

NameRated current IPN
Over-current IPRAccuracy εUpper cut-off frequency fCO
CMS3005 (discontinued)5 A15 A±0.8 %2 MHz
CMS3015 (discontinued)15 A45 A±0.8 %2 MHz
CMS3025 (discontinued)25 A75 A±0.8 %2 MHz
CMS3050 (discontinued)50 A150 A±0.8 %2 MHz
CMS3100 (discontinued)100 A300 A±0.8 %2 MHz

CMS3000 family

The CMS3000 current sensor family was designed for highly dynamic, electronic measurement of alternating and direct currents and also offers a safe isolation of the measurement signal and the evaluation circuit. The MR technology enables an excellent dynamic response time and is not afflicted with a hysteresis, as is often the case in iron core-based current sensors. Due to the large signal output voltage range of up to ±7.5 V and the resultant large signal-to-noise ratio, the CMS3000 current sensor family offers sensors for PCB mounting for a rated current range of 5 A to 100 A, which are ideally suited for measurement tasks in the field of power electronics.

You can also order these products via RS Components.

Evaluation Board

Evaluation boards are available for the products in the CMS3000 family.

For this board, the primary current can be fed in easily via large contact points. All sensor signals can be easily reached using screw terminals or measurement terminals.

You can also order these products via RS Components.


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Many of our products are also available worldwide from RS Components. Click on the link in the product description text to get directly to the RS Components website.

RS Components is one or the world’s leading distributors of electronics, automation and control elements, tools and consumables. With more than 1 million customers worldwide, offices in 32 countries and a global network of distribution centers.

Data sheets

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Product information

Handling instructions

  • CMS3000 family

    Handling instructions for the current sensors of the CMS3000 family

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