Why Choose the ABB CMS-201CA 80 A Current Sensor?
The ABB CMS-201CA is a compact 80 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 design 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-201CA measures TRMS AC and DC currents, supporting instantaneous, minimum, maximum and hold values when used within the compatible monitoring system. With current measurement accuracy of ≤±0.5% full scale, the closed-core sensor provides dependable circuit-level measurement while offering good resistance to electromagnetic influences from adjacent final circuits.
The sensor communicates with compatible ABB InSite SCU100 and SCU200 control units through the InSite bus using a 4-pole flat cable. Its cable-mounting arrangement can be secured with cable ties, providing a flexible solution for energy monitoring, load supervision and circuit-level electrical analysis in distribution boards and other electrical installations.
Key Advantages
- Compact 80 A TRMS current sensor for individual circuit monitoring.
- Solid-core 25 mm design for dependable current measurement.
- Measures TRMS AC and DC currents.
- ≤±0.5% full-scale accuracy supports precise circuit-level monitoring.
- Universal cable mounting allows installation independently of the protective or switching device manufacturer.
- Can be secured using cable ties for flexible installation.
- Compatible with ABB InSite SCU100 and SCU200 control units.
- InSite bus connection simplifies integration of multiple current sensors into a monitoring system.
Key Features
- ABB CMS current measurement system.
- 80 A TRMS rated primary current.
- 25 mm solid-core sensor.
- Universal cable mounting.
- Measures AC and DC current.
- TRMS current measurement.
- ≤±0.5% F.S. accuracy.
- Accuracy class 0.5.
- Supports instantaneous, minimum, maximum and hold current values through the monitoring system.
- InSite bus communication via 4-pole flat cable.
- Compatible with ABB SCU100 and SCU200 control units.
- Designed for circuit-level energy and load monitoring.
Flexible Circuit-Level Current Monitoring
The ABB CMS-201CA enables detailed monitoring of individual electrical circuits rather than limiting measurement to the total incoming supply. Its 80 A rating, TRMS measurement technology and ability to measure both AC and DC currents make it suitable for a broad range of branch-circuit and load-monitoring applications.
Universal cable mounting allows the sensor to be installed independently of the make of the protective or switching device, while the InSite bus provides a streamlined connection to compatible ABB control units. Multiple CMS sensors can therefore be incorporated into an energy-monitoring system to improve visibility of individual loads, support energy-efficiency analysis and assist with electrical-system supervision.
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.
