Why Choose the ABB A44 111-100 Energy Meter?
The ABB A44 111-100 is a professional three-phase CT/VT-connected electricity meter designed for indirect active energy measurement in industrial, commercial and building-services installations. Part of the ABB A44 EQ meter series, this Steel-function meter combines transformer-connected measurement with electrical instrumentation, alarm functionality and a pulse output in a compact DIN-rail format.
The A44 111-100 uses 1 A or 5 A current-transformer secondary circuits, with a nominal measurement current of 1 A and maximum input current of 6 A. It supports 3-wire and 4-wire three-phase systems and operates across a broad 3 × 57.7/100–288/500 V AC system voltage range, making it suitable for a wide variety of transformer-connected distribution networks.
Active energy is measured to Class B (Class 1) accuracy, and the meter is MID verified and IEC approved. A configurable electrical pulse output allows energy information to be transferred to external monitoring equipment, while the integrated infrared port supports communication with compatible ABB serial communication adapters.
Key Advantages
- Professional three-phase CT/VT-connected energy meter for indirect measurement.
- Supports 1 A and 5 A current-transformer secondary circuits.
- Maximum measurement current of 6 A.
- Suitable for 3-wire and 4-wire three-phase systems.
- Class B (Class 1) active energy accuracy for dependable metering.
- Wide 3 × 57.7/100–288/500 V AC system voltage range.
- Electrical pulse output for connection to external monitoring systems.
- Integrated infrared communication port for compatible communication adapters.
- Instrumentation and alarm functions provide additional electrical monitoring capability.
- MID verified and IEC approved for professional metering installations.
Key Features
- ABB A44 EQ meter series.
- Steel functionality level.
- Three-phase transformer-connected electricity meter.
- CT/VT connection for indirect energy measurement.
- 2-element and 3-element metering capability.
- Nominal current: 1 A.
- Maximum measurement current: 6 A.
- Compatible with 1 A and 5 A current-transformer secondary circuits.
- Class B (Class 1) active energy accuracy.
- Active energy measurement.
- Single-tariff operation.
- Electrical pulse output.
- Instrumentation values for electrical system monitoring.
- Alarm functionality.
- Infrared communication interface.
- Digital LCD display with seven counter positions.
- 50/60 Hz operating frequency.
- Seven-module DIN-rail construction.
Reliable Transformer-Connected Three-Phase Energy Monitoring
The ABB A44 111-100 is designed for electrical systems where direct connection of the primary load current to an energy meter is impractical. External current transformers reduce the primary current to a standard measurement level, allowing the A44 111-100 to monitor higher-current three-phase installations while retaining accurate Class B active energy measurement.
In addition to accumulated active energy, the A44 platform provides useful instrumentation values and alarm functionality for monitoring electrical operating conditions. The pulse output can transfer energy information to compatible external equipment, while the infrared interface allows the meter to work with suitable ABB communication adapters when additional system connectivity is required.
Typical Applications
- Industrial three-phase energy monitoring.
- Commercial building electricity metering.
- CT/VT-connected electrical sub-metering.
- Higher-current distribution boards and switchgear.
- Factory and production-line energy monitoring.
- Commercial and industrial facility management.
- Three-phase 3-wire and 4-wire distribution systems.
- Energy efficiency and consumption analysis.
- Electrical control and distribution panels.
- Pulse-based remote energy monitoring systems.
