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2CMA170533R1000 ABB A44 111-100 Three-Phase CT/VT-Connected Energy Meter with Pulse Output
ABB A44 111-100 is a three-phase CT/VT-connected DIN-rail active energy meter with 1 A nominal and 6 A maximum measurement current, Class B accuracy, a 3 x 57.7/100–288/500 V AC system voltage range and electrical pulse output.
£223.38
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.
Technical Specifications
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| Measurement Connection Type | CT connection | |
|---|---|---|
| MID Approval | Yes | |
| Device Type | Energy meter | |
| Series | A44 EQ Meters | |
| ABB order code | 2CMA170533R1000 | |
| Product type | Three-phase electricity / energy meter | |
| Functionality level | Steel | |
| Connection type | CT/VT transformer connected | |
| Number of phases | 3 | |
| Network configuration | 3-wire / 4-wire | |
| Metering configuration | 2-element / 3-element | |
| Nominal current | 1 A | |
| Maximum measurement current | 6 A | |
| CT secondary compatibility | 1 A / 5 A | |
| Phase-to-neutral rated voltage | 57.7–288 V AC | |
| Phase-to-phase rated voltage | 100–500 V AC | |
| System voltage | 3 × 57.7/100–288/500 V AC | |
| Voltage measurement range | 3 × 47–331 V AC | |
| Frequency | 50/60 Hz | |
| Measured energy | Active energy | |
| Active energy accuracy | Class B (Class 1) | |
| Tariff rating | Single tariff | |
| Output | Electrical pulse output | |
| Communication interface | Infrared port | |
| Display | Digital LCD, 7 counter positions | |
| Protection rating | IP20 | |
| Operating temperature | −40 to +70 °C | |
| Mounting type | DIN rail | |
| Module width | 7 DIN modules | |
| Dimensions (W × H × D) | 123 × 97 × 65 mm | |
| Product weight | approx. 0.35 kg | |
| Approvals | MID verified and IEC approved |
Frequently Asked Questions
What is the ABB A44 111-100 used for?
The ABB A44 111-100 is used for three-phase transformer-connected active energy measurement in commercial and industrial electrical systems where external CTs and, where applicable, VTs are used for indirect metering.
What current inputs does the ABB A44 111-100 support?
The A44 111-100 has a nominal measurement current of 1 A, a maximum measurement current of 6 A and supports installations using 1 A or 5 A current-transformer secondary circuits.
What is the accuracy of the ABB A44 111-100?
The meter provides Class B (Class 1) active energy accuracy and is designed for professional transformer-connected electricity metering.
Does the ABB A44 111-100 have a pulse output?
Yes. The A44 111-100 incorporates an electrical pulse output that can provide active energy pulse information to compatible external monitoring and data-acquisition equipment.
Does the ABB A44 111-100 have serial communication?
The A44 111-100 has an infrared communication port but does not include built-in RS-485 or M-Bus serial communication. Compatible ABB communication adapters can be used with the infrared interface where additional connectivity is required.
Trusted Energy Measurement from ABB
ABB A44 energy meters provide accurate transformer-connected three-phase measurement with instrumentation, alarm and pulse-output functionality, supporting dependable energy monitoring across industrial, commercial and electrical distribution applications.
