Why Choose the ABB CMS-202DR 40 A Current Sensor?
The ABB CMS-202DR is a compact 40 A TRMS solid-core current sensor designed for detailed circuit-level measurement within ABB circuit and energy monitoring systems. Its 25 mm solid-core format and universal DIN-rail mounting make it suitable for installation independently of the manufacturer of the protective or switching device used in the final circuit.
The CMS-202DR measures TRMS AC and DC currents, providing accurate monitoring of individual electrical loads and branch circuits. With current accuracy of ≤±0.5% full scale and accuracy class 0.5, the closed-core sensor provides dependable measurement while helping reduce the influence of electromagnetic effects from neighbouring circuits.
Measurement information is transmitted through the ABB InSite bus using a 4-pole flat cable to compatible monitoring equipment, including SCU100 and SCU200 control units. Its universal DIN-rail mounting, compact construction and 40 A rated primary current make the CMS-202DR a practical solution for detailed energy monitoring, load supervision and electrical-system analysis.
Key Advantages
- Compact 40 A TRMS current sensor for individual circuit monitoring.
- Measures TRMS AC and DC currents.
- ≤±0.5% full-scale current accuracy supports dependable electrical monitoring.
- 25 mm solid-core construction provides a compact closed-core measurement solution.
- Universal DIN-rail mounting allows use independently of the protective or switching device manufacturer.
- 15 mm bore diameter accommodates the monitored conductor.
- Compatible with ABB SCU100 and SCU200 InSite control units.
- InSite bus connectivity simplifies integration of multiple current sensors into an energy-monitoring system.
Key Features
- ABB CMS current measurement system.
- 40 A rated primary current.
- 25 mm solid-core sensor.
- Universal DIN-rail mounting.
- Measures AC and DC current.
- TRMS current measurement.
- ≤±0.5% F.S. current accuracy.
- Accuracy class 0.5.
- InSite bus communication via flat cable.
- Compatible with ABB SCU100 and SCU200 control units.
- 15 mm conductor opening.
- Low 0.27 W power consumption at rated load.
- Designed for circuit-level energy, current and load monitoring.
Flexible DIN-Rail Circuit Monitoring
The ABB CMS-202DR enables individual electrical circuits to be monitored rather than limiting measurement to the total incoming supply. Its 40 A primary current rating, TRMS measurement and ability to measure both AC and DC currents make it suitable for detailed load monitoring across commercial, industrial and infrastructure electrical distribution systems.
Universal DIN-rail mounting means the sensor can be installed independently of the manufacturer of the associated protective or switching device. Multiple CMS sensors can communicate through the InSite bus with a compatible ABB control unit, providing detailed circuit-level information for energy-efficiency analysis, load supervision and electrical-system management.
Typical Applications
- Branch-circuit current monitoring.
- Commercial building energy-management systems.
- Industrial electrical distribution boards.
- ABB InSite energy-monitoring systems.
- Individual electrical load monitoring.
- Energy-consumption analysis at circuit level.
- Data centres and critical electrical infrastructure.
- Building automation and energy-efficiency projects.
- AC and DC circuit monitoring.
- Distribution boards requiring universal DIN-rail-mounted current sensors.
