Why Choose the ABB CMS-202CA 40 A Current Sensor?
The ABB CMS-202CA is a compact 40 A TRMS solid-core current sensor designed for detailed branch-circuit measurement within ABB InSite energy-monitoring systems. Its 25 mm solid-core format and universal cable-mounting arrangement make it suitable for monitoring individual conductors independently of the brand or type of protective and switching device used in the final circuit.
The CMS-202CA measures TRMS AC and DC currents and provides a measuring range of 0.1–40 A. With current measurement accuracy of ≤±0.5% full scale, the sensor provides dependable circuit-level measurement while its closed-core construction helps minimise susceptibility to electromagnetic influences from neighbouring circuits.
Measurement data is transmitted through the ABB InSite bus using a 4-pole flat cable to compatible monitoring equipment such as the SCU100 and SCU200 control units. Universal cable mounting allows the sensor to be secured using cable ties, providing a flexible solution for energy monitoring, load supervision and detailed electrical analysis within distribution boards.
Key Advantages
- Compact 40 A TRMS current sensor for individual circuit monitoring.
- 0.1–40 A measuring range supports detailed branch-circuit measurement.
- Measures TRMS AC and DC currents.
- ≤±0.5% full-scale current accuracy supports dependable monitoring.
- 25 mm solid-core construction provides a compact closed-core measurement solution.
- Universal cable mounting allows use independently of the protective or switching device manufacturer.
- 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.
- 0.1–40 A measuring range.
- Universal cable 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.
- Designed for circuit-level energy, current and load monitoring.
Flexible Circuit-Level Current Monitoring
The ABB CMS-202CA enables individual electrical circuits to be monitored rather than limiting measurement to the total incoming supply. Its 0.1–40 A measurement range, TRMS measurement and support for both AC and DC currents make it well suited to detailed load monitoring in commercial and industrial electrical distribution systems.
Universal cable mounting allows the sensor to be installed independently of the make of the associated protective or switching device. Multiple CMS sensors can be connected through the InSite bus to 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 cable-mounted sensors.
