Why Choose the ABB CMS-122PS 20A Open-Core Current Sensor?
The ABB CMS-122PS, order code 2CCA880212R0001, is a compact 20 A open-core current sensor designed for circuit-level electrical monitoring within ABB Circuit Monitoring and InSite energy management systems. Its open-core construction simplifies installation around existing conductors, making it particularly useful for retrofit monitoring applications where disconnecting the conductor is undesirable.
The CMS-122PS provides a measurement range of 0.1–20 A with accuracy class 1 and current accuracy of ≤±1% of full scale. It combines compact dimensions with dependable circuit-level measurement, enabling individual electrical loads to be incorporated into detailed energy monitoring and distribution management systems.
Designed as an 18 mm open-core sensor for ABB pro M compact and SMISSLINE installation devices with twin terminals, the CMS-122PS integrates neatly into compatible low-voltage distribution equipment. Measurement data is transmitted through the ABB InSite bus flat-cable interface, allowing multiple sensors to be connected within a scalable circuit monitoring architecture.
Key Advantages
- Compact 20 A open-core current sensor for circuit-level monitoring.
- 0.1–20 A measurement range for monitoring lower-current branch circuits and loads.
- Open-core construction supports convenient installation around existing conductors.
- Accuracy class 1 with current accuracy of ≤±1% of full scale.
- Designed for ABB pro M compact and SMISSLINE devices with twin terminals.
- InSite bus flat-cable interface provides straightforward connection to compatible ABB monitoring equipment.
- Compact dimensions make the sensor suitable for high-density electrical distribution boards.
Key Features
- ABB CMS current monitoring system.
- 20 A current sensor.
- 0.1–20 A measurement range.
- Open-core sensor construction.
- Accuracy class 1.
- Current accuracy of ≤±1% of full scale.
- 18 mm sensor format.
- Designed for pro M compact and SMISSLINE installation devices with twin terminals.
- InSite bus communication via flat cable.
- Surface-mounted sensor configuration.
- Operating temperature range of -25 to +70 °C.
- Compact and lightweight design for multi-circuit monitoring installations.
Retrofit-Friendly Circuit-Level Current Monitoring
Open-core current sensors such as the ABB CMS-122PS are particularly useful when circuit monitoring needs to be added to an existing electrical installation. The sensor can be positioned around the conductor without the same installation requirements as a closed-core sensor, helping simplify retrofit work while providing individual circuit measurements for energy analysis and electrical load monitoring.
The CMS-122PS is designed specifically for compatible ABB pro M compact and SMISSLINE devices with twin terminals. Multiple CMS sensors can transmit measurement data through the InSite bus to compatible ABB monitoring equipment, creating a compact and scalable system for gaining detailed visibility of individual electrical circuits.
Typical Applications
- Branch circuit current monitoring.
- ABB InSite energy management systems.
- ABB pro M compact installations.
- ABB SMISSLINE distribution systems.
- Retrofit electrical monitoring projects.
- Commercial and industrial distribution boards.
- Energy consumption and electrical load analysis.
- Building and facility energy management systems.
