Why Choose the ABB CMS-120DR 80 A Open-Core Current Sensor?
The ABB CMS-120DR is a compact open-core current sensor designed for branch-circuit monitoring and energy-management applications. Part of the ABB CMS Circuit Monitoring System, this 18 mm sensor provides accurate current measurement over a 0.1–80 A range for detailed monitoring of individual electrical circuits.
Designed for universal DIN-rail mounting, the CMS-120DR combines flexible installation with an open-core construction that is particularly useful for retrofit and upgrade projects. The sensor can be integrated into distribution equipment without being tied to a specific protective-device platform, making it suitable for a broad range of commercial, industrial and critical-power installations.
With ≤±1% full-scale current accuracy, an InSite bus flat-cable interface and a compact 18 mm format, the CMS-120DR provides an efficient way to add branch-level current visibility to compatible ABB monitoring systems. ABB order code 2CCA880240R0001 identifies this 80 A DIN-rail-mounted open-core sensor.
Key Advantages
- Compact 80 A open-core current sensor for branch-circuit monitoring.
- Wide 0.1–80 A measurement range for individual electrical loads.
- Open-core construction supports convenient installation and retrofit projects.
- Universal DIN-rail mounting provides flexible integration into distribution equipment.
- Current accuracy of ≤±1% full scale for dependable circuit monitoring.
- Connects through the ABB InSite bus flat-cable interface for streamlined system integration.
Key Features
- ABB CMS Circuit Monitoring System sensor.
- 80 A maximum measurement current.
- 0.1–80 A measurement range.
- 18 mm open-core sensor construction.
- Accuracy class 1.
- Current accuracy of ≤±1% full scale.
- Power consumption at rated load of 0.18 W.
- InSite bus flat-cable interface.
- Universal DIN-rail mounting.
- Operating ambient temperature range of -25 to +70 °C.
Flexible DIN-Rail Circuit Monitoring
The ABB CMS-120DR enables individual electrical circuits to be incorporated into a wider energy-monitoring system, giving operators detailed branch-level visibility rather than relying solely on measurements at the main incoming supply. This information can support energy-consumption analysis, load supervision and identification of unusual operating conditions within electrical distribution systems.
Its open-core construction and universal DIN-rail mounting make the CMS-120DR particularly useful when upgrading existing distribution equipment. Combined with ABB's InSite flat-cable architecture, multiple sensors can be connected efficiently while minimising additional wiring and installation complexity.
Typical Applications
- ABB CMS and InSite energy-monitoring systems.
- Branch-circuit current monitoring.
- Retrofit energy-monitoring installations.
- Electrical distribution boards and switchboards.
- Commercial building energy monitoring.
- Industrial electrical load monitoring.
- Data centre and critical-power monitoring.
- Energy-consumption and load analysis.
