2CCA880225R0001 ABB CMS-120LA 80A Open-Core Current Sensor

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.