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2CCA880227R0001 ABB CMS-122LA 18 mm 20 A pro M Open-Core Current Sensor
ABB CMS-122LA is an 18 mm 20 A open-core current sensor with a 0.1–20 A measurement range, 1% full-scale accuracy and InSite bus connectivity for retrofit monitoring of System pro M compact and SMISSLINE circuits.
£46.92
Why Choose the ABB CMS-122LA 20 A Open-Core Current Sensor?
The ABB CMS-122LA is a compact open-core current sensor designed for branch-circuit monitoring and energy-management applications. As part of the ABB CMS Circuit Monitoring System, this 18 mm sensor provides accurate current measurement for individual circuits and connects to compatible ABB InSite monitoring equipment through the system's flat-cable bus.
Designed specifically for retrofit applications with ABB System pro M compact and SMISSLINE devices, the CMS-122LA uses an open-core construction that allows convenient installation around an existing conductor. This makes it particularly useful when adding detailed circuit monitoring to existing distribution boards without using a permanently closed sensing core.
With a measurement range of 0.1–20 A, current accuracy of 1% full scale and compatibility with ABB SCU100 and SCU200 control units, the CMS-122LA provides a practical solution for lower-current branch monitoring. ABB order code 2CCA880227R0001 identifies this 20 A pro M retrofit open-core sensor.
Key Advantages
- Compact 20 A open-core current sensor for detailed branch-circuit monitoring.
- Designed for retrofit of System pro M compact and SMISSLINE installations.
- Wide 0.1–20 A measurement range for lower-current electrical loads.
- Open-core construction supports convenient installation around existing conductors.
- 1% full-scale accuracy for dependable circuit-level measurement.
- Integrates with compatible ABB monitoring equipment through the InSite bus flat-cable interface.
Key Features
- ABB CMS Circuit Monitoring System sensor.
- 20 A rated primary current.
- 0.1–20 A measurement range.
- 18 mm open-core sensor construction.
- 10 mm bore diameter.
- Current accuracy of 1% full scale.
- InSite bus flat-cable interface.
- Compatible with ABB SCU100 and SCU200 control units.
- Designed for System pro M compact and SMISSLINE retrofit applications.
- Operating ambient temperature range of -25 to +70 °C.
Practical Retrofit Monitoring for pro M Installations
The ABB CMS-122LA enables existing electrical circuits to be incorporated into a wider energy-monitoring system. Detailed branch-level current information can help operators understand electrical consumption, supervise individual loads and identify changes in circuit behaviour across commercial and industrial distribution systems.
Its open-core construction is particularly useful for retrofit projects because the sensor can be fitted around an existing conductor. Combined with ABB's InSite flat-cable interface, multiple CMS sensors can be integrated efficiently with compatible control units while minimising additional wiring inside the distribution board.
Typical Applications
- ABB System pro M compact retrofit monitoring.
- ABB SMISSLINE retrofit monitoring.
- ABB CMS and InSite energy-monitoring systems.
- Branch-circuit current monitoring.
- Electrical distribution boards and switchboards.
- Commercial building energy monitoring.
- Industrial electrical load monitoring.
- Energy-consumption and load analysis.
Technical Specifications
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| Mounting Type | Direct mounting | |
|---|---|---|
| Rated Primary Current (A) | 20 A | |
| Device Type | Split-core CT | |
| Series | CMS Circuit Monitoring System | |
| ABB order code | 2CCA880227R0001 | |
| EAN | 7612271498603 | |
| Product type | Open-core current sensor | |
| Rated primary current | 20 A | |
| Measurement range | 0.1–20 A | |
| Current accuracy | 1% full scale | |
| Sensor type | Open-core, 18 mm | |
| Bore diameter | 10 mm | |
| Rated current frequency | 50 Hz | |
| Power consumption | 0.18 W | |
| Communication interface | InSite bus (flat cable) | |
| Control unit compatibility | SCU100 / SCU200 | |
| Mounting type | Surface mounting | |
| Application | Retrofit of System pro M compact and SMISSLINE circuits | |
| Operating temperature | -25 to +70 °C | |
| Dimensions (W × H × D) | 17.4 × 38.9 × 41 mm | |
| Net weight | approx. 0.012 kg |
Frequently Asked Questions
What is the ABB CMS-122LA used for?
The ABB CMS-122LA is an open-core current sensor for branch-circuit monitoring, designed particularly for retrofit applications with ABB System pro M compact and SMISSLINE installations.
What current range can the CMS-122LA measure?
The CMS-122LA has a measurement range of 0.1–20 A and a rated primary current of 20 A, making it suitable for monitoring lower-current branch circuits.
How accurate is the ABB CMS-122LA?
The CMS-122LA provides current measurement accuracy of 1% of full scale, supporting dependable circuit-level energy and load monitoring.
Why does the CMS-122LA use an open-core design?
The open-core construction enables convenient retrofit installation around an existing conductor, making it easier to add current monitoring to established electrical distribution systems.
Which ABB control units are compatible with the CMS-122LA?
The CMS-122LA is compatible with ABB SCU100 and SCU200 control units and communicates through the InSite bus flat-cable interface.
Trusted Circuit Monitoring from ABB
ABB CMS open-core sensors provide compact branch-level current measurement for retrofit energy-monitoring applications, allowing existing System pro M compact and SMISSLINE circuits to be integrated efficiently into compatible ABB InSite monitoring systems.
