Why Choose the ABB CMS-120LA 80A Open-Core Current Sensor?
The ABB CMS-120LA, order code 2CCA880225R0001, is a compact 80 A open-core current sensor designed for circuit-level electrical monitoring within ABB Circuit Monitoring and InSite energy management systems. Its 18 mm open-core construction is designed for retrofit installation on compatible ABB System pro M compact and SMISSLINE devices, making it particularly suitable for adding detailed current monitoring to existing distribution boards.
The CMS-120LA provides a wide 0.1–80 A measurement range with 1% full-scale accuracy. Its open-core construction allows the sensor to be installed around an existing conductor without having to pass the conductor through a permanently closed core, simplifying retrofit energy monitoring and reducing disruption during installation.
Designed for surface mounting on compatible ABB installation devices, the CMS-120LA combines compact dimensions with digital integration through the ABB InSite bus flat-cable interface. Multiple CMS sensors can therefore be incorporated into a scalable monitoring architecture for detailed circuit measurement, load analysis and energy management.
Key Advantages
- Compact 80 A open-core current sensor for circuit-level electrical monitoring.
- Wide 0.1–80 A measurement range for monitoring individual circuits and loads.
- Open-core construction simplifies installation around existing conductors.
- 1% full-scale accuracy for dependable circuit-level current measurement.
- Designed for retrofit use with compatible ABB System pro M compact and SMISSLINE devices.
- InSite bus flat-cable interface enables integration with compatible ABB monitoring equipment.
- Compact 18 mm format is well suited to high-density electrical distribution boards.
Key Features
- ABB CMS current monitoring system.
- 80 A current sensor.
- 0.1–80 A measuring range.
- Open-core sensor construction.
- 1% full-scale accuracy.
- 18 mm sensor format.
- Designed for retrofit installation with compatible System pro M compact and SMISSLINE devices.
- Suitable for compatible S200 and SMISSLINE MCB applications.
- Suitable for compatible SMISSLINE RCBO applications.
- Surface mounting configuration.
- InSite bus communication via flat cable.
- Low power consumption of approximately 0.18 W at rated load.
Retrofit Current Monitoring for System pro M and SMISSLINE
Open-core current sensors such as the ABB CMS-120LA provide a practical way to add detailed circuit monitoring to existing electrical installations. The open-core construction allows the sensor to be fitted around an installed conductor, reducing the amount of rewiring required when upgrading a distribution board with circuit-level energy and load monitoring.
The CMS-120LA is designed for compatible ABB System pro M compact and SMISSLINE installations and provides measurement across a broad 0.1–80 A range. Its InSite bus connection allows multiple CMS sensors to transmit circuit data to compatible ABB monitoring equipment, creating a compact and scalable energy management architecture.
Typical Applications
- ABB System pro M compact circuit monitoring.
- ABB SMISSLINE distribution system monitoring.
- Retrofit monitoring of existing distribution boards.
- Branch circuit current monitoring.
- ABB InSite energy management systems.
- Commercial and industrial electrical distribution.
- Energy consumption and electrical load analysis.
- Building and facility energy management systems.
