Why Choose the ABB CMS-122CA Open-Core Current Sensor?
The ABB CMS-122CA is a compact 20 A open-core current sensor designed for branch-circuit current measurement within ABB CMS and InSite energy monitoring systems. With ABB order code 2CCA880222R0001, this sensor provides a practical solution for monitoring electrical loads in distribution boards, control panels and energy-management installations.
Its open-core 18 mm sensor design allows the CMS-122CA to be installed around an existing conductor without disconnecting the cable, making it particularly suitable for retrofit projects and extensions to existing monitoring systems. Cable mounting provides universal installation flexibility, while communication through the InSite flat-cable bus simplifies connection to compatible ABB monitoring equipment.
The CMS-122CA provides a 0.1–20 A measuring range with current accuracy of ≤±1% full scale. Its compact housing measures approximately 17.4 × 29 × 42 mm, supporting high-density branch monitoring where installation space inside electrical panels is limited.
Key Advantages
- Open-core current sensor enables installation around existing conductors.
- 20 A maximum measuring range for branch-circuit monitoring.
- Measures current across a 0.1–20 A range.
- 18 mm open-core format with universal cable mounting.
- Current accuracy of ≤±1% full scale supports dependable electrical monitoring.
- Compact construction is ideal for space-constrained distribution boards and control panels.
- Designed for integration with ABB CMS and InSite energy monitoring systems.
Key Features
- ABB CMS current monitoring sensor.
- 20 A open-core current measurement.
- 0.1–20 A measuring range.
- 18 mm open-core sensor type.
- Cable mounting for universal-use applications.
- ≤±1% full-scale current accuracy.
- InSite bus flat-cable interface.
- Operating ambient temperature range of −25 to +70 °C.
- Compact dimensions for multi-channel branch monitoring installations.
Reliable Branch-Circuit Current Monitoring
Current sensors such as the ABB CMS-122CA enable individual electrical circuits to be monitored as part of a multi-channel energy-management system. Measuring current at branch level gives facility operators and electrical engineers greater visibility of load behaviour and provides useful data for energy analysis, system supervision and identification of changing consumption patterns.
The open-core construction is especially useful when adding monitoring to an existing installation because the sensor can be fitted around an installed conductor. Combined with its compact dimensions and cable-mounting format, the CMS-122CA provides a flexible way to extend current monitoring across distribution boards containing multiple outgoing circuits.
Typical Applications
- Branch-circuit current monitoring in electrical distribution boards.
- ABB CMS and InSite energy-management installations.
- Commercial and industrial energy monitoring systems.
- Retrofit monitoring of existing electrical circuits.
- Electrical load and consumption analysis.
- Multi-channel monitoring inside control panels and switchboards.
