ABB 2CMA100166R1000 B23 212-100 Three-Phase Energy Meter with Modbus RS485

The meter provides direct measurement up to a maximum current of 65 A and supports active and reactive energy measurement. It also provides measurements of voltage, current, power, frequency, power factor and apparent power through its integrated display and communication interface. :contentReference[oaicite:1]{index=1}

Product Identification

• Manufacturer: ABB
• Part Number: 2CMA100166R1000
• Product Type: B23 212-100
• Product Category: Three-Phase Energy Meter
• Measurement Type: Direct Connected
• Network Type: Three-Phase
• Network Configuration: 3-Wire or 4-Wire
• Maximum Current: 65 A
• Rated Line-to-Neutral Voltage: 220-240 V
• Rated Line-to-Line Voltage: 380-415 V
• Communication: RS485
• Communication Protocol: Modbus RTU
• Mounting: DIN Rail
• Display: LCD with Backlight

ABB B23 212-100 Overview

The ABB B23 212-100 is an advanced compact energy meter designed for installation on a DIN rail. The device is intended for electrical measurement applications in commercial, residential and other low-voltage installations.

ABB 2CMA100166R1000 combines energy measurement, electrical parameter monitoring, communication and configurable output functions in a compact four-module DIN-rail housing.

The meter can be integrated into an electrical monitoring system through its RS485 interface and Modbus RTU communication capability. :contentReference[oaicite:2]{index=2}

Three-Phase Measurement

ABB 2CMA100166R1000 is designed for three-phase electrical networks. It can be used with both three-wire and four-wire systems, making it suitable for a range of low-voltage distribution configurations.

The meter uses direct connection for current measurement and is rated for a maximum current of 65 A. The rated voltage range is 220-240 V line-to-neutral and 380-415 V line-to-line. :contentReference[oaicite:3]{index=3}

Direct Current Measurement

The B23 212-100 uses direct connection rather than requiring external current transformers for measurements within its specified current range.

The maximum direct-connected current is 65 A. This makes the meter suitable for circuits where the measured current remains within the specified direct-input limit. :contentReference[oaicite:4]{index=4}

For installations exceeding the direct measurement range, the appropriate ABB meter and current-transformer configuration should be selected instead.

Voltage Measurement

The rated voltage is specified as 220-240 V line-to-neutral and 380-415 V line-to-line. The listed voltage operating range is approximately 3 × 176 to 276 V. :contentReference[oaicite:5]{index=5}

These voltage parameters allow the meter to monitor the principal voltage values of a standard low-voltage three-phase electrical system.

Active Energy Measurement

ABB 2CMA100166R1000 measures active electrical energy and provides registers for imported and exported energy. The active-energy accuracy is specified as Class 1, with Class B applicable for the MID version. :contentReference[oaicite:6]{index=6}

The meter can therefore be used for monitoring energy consumption as well as energy flowing in the opposite direction within systems where bidirectional energy registration is required.

Reactive Energy Measurement

In addition to active energy, the meter measures reactive energy. The catalog information identifies reactive energy accuracy at Class 2, while the active-energy measurement is specified at Class 1 or Class B for the MID configuration. :contentReference[oaicite:7]{index=7}

This provides additional information for electrical systems where reactive power and energy characteristics need to be monitored together with active energy.

Electrical Parameter Monitoring

The B23 212-100 provides multiple electrical instrumentation values. These include phase and total power, phase voltages, line-to-line voltages, currents, frequency, cos phi, power factor and apparent power. :contentReference[oaicite:8]{index=8}

These measurements allow the meter to be used not only as an energy counter but also as a compact electrical monitoring device.

LCD Display

ABB 2CMA100166R1000 uses a digital LCD display with white backlighting. The display provides up to seven digits for energy counter values and can present the measured electrical parameters available through the meter’s interface. :contentReference[oaicite:9]{index=9}

The backlit display makes the measurement information accessible directly from the front of the DIN-rail mounted device.

RS485 Modbus RTU Communication

A major feature of ABB 2CMA100166R1000 is its integrated RS485 communication interface. The meter supports Modbus RTU communication, allowing measured electrical data to be transferred to a monitoring or automation system. :contentReference[oaicite:10]{index=10}

This interface can be used for centralized energy monitoring, building management systems, electrical distribution monitoring and other applications requiring digital access to meter data.

The RS485 interface also allows multiple compatible devices to be incorporated into an appropriate communication network, subject to the applicable Modbus configuration and installation requirements.

Pulse and Alarm Output

The meter provides one configurable output that can be used for pulse output or alarm functions. The pulse output can be associated with active energy measurement, while alarm functions can be configured around defined electrical conditions. :contentReference[oaicite:11]{index=11}

The device supports up to 25 possible alarm values according to the product description, allowing selected measurement thresholds and time delays to be incorporated into the monitoring configuration. :contentReference[oaicite:12]{index=12}

Import and Export Energy Registers

ABB 2CMA100166R1000 supports separate registers for imported and exported energy as well as total energy information. This makes the meter suitable for installations where energy can flow in both directions.

Bidirectional registration is particularly relevant to electrical systems incorporating distributed generation or other equipment that can result in reverse energy flow.

Event Logs

The B23 212-100 includes event-log functionality. The meter can record relevant events associated with its monitoring and alarm functions, providing additional information when analyzing the behavior of an electrical installation. :contentReference[oaicite:13]{index=13}

DIN-Rail Installation

ABB 2CMA100166R1000 is designed for DIN-rail mounting. The compact housing has an installation width corresponding to four DIN modules.

The published dimensions are approximately 70 mm wide, 26.5 mm high and 65 mm deep. :contentReference[oaicite:14]{index=14}

The compact form factor allows the meter to be integrated into electrical distribution boards and control cabinets where DIN-rail instrumentation is required.

Technical Specification Summary

Frequency and Operating Conditions

The rated operating frequency of ABB 2CMA100166R1000 is 50/60 Hz. The meter is specified for an ambient operating temperature range of approximately -40°C to +70°C. :contentReference[oaicite:15]{index=15}

The applicable installation environment should remain within the specified electrical and environmental limits to maintain correct measurement performance.

Protection Rating

The published protection rating for the meter is IP20. :contentReference[oaicite:16]{index=16}

The IP20 rating indicates that the meter is intended for installation inside an appropriate electrical enclosure or distribution environment rather than direct exposure to water or outdoor environmental conditions.

Power Consumption

The product information lists power consumption at approximately 0.721 W. :contentReference[oaicite:17]{index=17}

The low internal consumption is appropriate for a compact monitoring meter intended for continuous installation within an electrical distribution system.

Applications

ABB 2CMA100166R1000 can be applied in a range of low-voltage electrical monitoring systems. Typical application areas include commercial buildings, residential electrical distribution, energy monitoring panels, building management systems and electrical sub-distribution boards.

The combination of direct three-phase measurement and Modbus RTU communication makes the device suitable for applications where electrical measurements need to be collected by a supervisory or automation system.

Building Energy Monitoring

The meter can be installed in building electrical distribution systems to monitor energy consumption and electrical parameters.

The RS485 interface provides a method for transmitting measurement data to a central monitoring system, while the local LCD display allows electrical values to be viewed directly at the installation point.

Industrial Electrical Monitoring

In industrial installations, the B23 212-100 can provide electrical measurements for individual low-voltage circuits within its 65 A direct-measurement limit.

Current, voltage, active power, reactive power, apparent power, frequency and power factor measurements can provide useful information for electrical system monitoring.

Energy Management Systems

The Modbus RTU interface allows ABB 2CMA100166R1000 to exchange measurement data with compatible energy-management and automation systems.

Multiple measurement points can be incorporated into a larger monitoring architecture when the communication network is designed according to the applicable RS485 and Modbus requirements.

Compatibility Verification

Before selecting ABB 2CMA100166R1000, the following parameters should be verified:

• ABB part number: 2CMA100166R1000
• Product type: B23 212-100
• Three-phase network configuration
• Three-wire or four-wire installation
• Direct current measurement up to 65 A
• 220-240 V line-to-neutral voltage
• 380-415 V line-to-line voltage
• 50/60 Hz operating frequency
• RS485 Modbus RTU communication requirements
• DIN-rail installation space
• Required pulse or alarm output function

The actual electrical system should be checked against the meter’s specified voltage, current and connection requirements before installation.

Communication in Automation Systems

ABB 2CMA100166R1000 can act as a measurement point within an automation or energy-management architecture. Its RS485 Modbus RTU interface provides access to the meter’s available measurement registers.

The communication configuration should be coordinated with the master device, including the applicable address, communication parameters and register mapping.

Energy Measurement Registers

The meter provides energy registers for import and export as well as total energy information. This allows electrical energy data to be separated according to the direction of energy flow.

The available registers and measurement values should be read according to the applicable ABB communication documentation and meter configuration.

Maintenance Considerations

Maintenance of ABB 2CMA100166R1000 should include inspection of the electrical connections, DIN-rail mounting position, display condition and communication wiring.

The meter should be isolated according to the applicable electrical safety procedures before performing work on its wiring or installation.

For communication problems, the RS485 wiring, communication parameters, Modbus address and connected master device should be checked systematically.

Installation Considerations

The meter is designed for DIN-rail installation and should be installed in a suitable electrical distribution enclosure.

The three-phase connection must correspond to the actual network configuration. The line-to-neutral and line-to-line voltage should remain within the specified operating range.

Because the meter supports direct measurement up to 65 A, the measured circuit should be checked to ensure that the maximum direct-connected current is not exceeded.

Product Identification for Inventory

For industrial inventory records, the recommended product description is ABB 2CMA100166R1000 B23 212-100 Three-Phase Energy Meter.

Additional searchable descriptions can include ABB B23 212-100 Energy Meter, ABB 2CMA100166R1000 Modbus Energy Meter, ABB 2CMA100166R1000 65A Energy Meter and ABB B23 Three-Phase DIN-Rail Meter.

The complete ABB part number 2CMA100166R1000 should remain the primary identification reference when matching technical documentation and inventory records.

Product Dimensions

The published dimensions of ABB 2CMA100166R1000 are approximately 70 mm × 26.5 mm × 65 mm for width, height and depth respectively. :contentReference[oaicite:18]{index=18}

The compact dimensions correspond to a four-module DIN-rail installation format and allow the meter to be incorporated into compact electrical distribution panels.

Standards and Measurement Classification

The meter is described as IEC approved and MID approved and verified for the applicable version. The published product information also identifies active energy accuracy as Class 1 or Class B for MID meters. :contentReference[oaicite:19]{index=19}

The exact regulatory and metering requirements should be confirmed for the specific installation and market before the meter is used for legally regulated measurement.

Application Summary

ABB 2CMA100166R1000 is a B23 212-100 three-phase digital energy meter designed for direct-connected measurement up to 65 A. It supports three-wire and four-wire electrical networks and measures active and reactive energy together with multiple electrical parameters.

The integrated LCD display provides local measurement information, while RS485 Modbus RTU communication allows the meter to exchange data with an external monitoring or automation system. A configurable pulse or alarm output provides an additional interface for energy or threshold-related functions. :contentReference[oaicite:20]{index=20}

Conclusion

ABB 2CMA100166R1000 is the B23 212-100 Three-Phase Energy Meter. Its principal characteristics include three-phase direct measurement up to 65 A, 220-240 V line-to-neutral operation, 380-415 V line-to-line operation, active and reactive energy measurement, backlit LCD display and RS485 Modbus RTU communication.

The recommended technical product name is ABB 2CMA100166R1000 B23 212-100 Three-Phase Energy Meter with Modbus RS485. When identifying this meter for an electrical installation or inventory system, the complete ABB part number, network configuration, voltage, current range and communication requirements should be verified.