Why Choose the ABB A42 111-100 Single-Phase Energy Meter?
The ABB A42 111-100 is a compact and reliable single-phase current-transformer-connected DIN rail energy meter designed for accurate measurement of active electrical energy in industrial, commercial and building installations. As part of the ABB A42 EQ meter series, this Steel-functionality meter provides essential energy measurement and electrical instrumentation in a compact modular format.
The A42 111-100 provides active energy measurement together with monitoring of key electrical parameters including current, voltage, frequency and power factor. Its pixel-oriented display provides clear access to measured values, while an integrated infrared communication port and electrical pulse output provide additional options for meter reading and energy monitoring.
Designed for single-phase CT-connected measurement up to 6 A, the A42 111-100 is suitable for applications where indirect measurement through an external current transformer is required. It supports a wide 57.7–288 V AC voltage range, operates at 50 / 60 Hz and provides Class B / Class 1 active energy accuracy with MID approval.
Key Advantages
- Compact single-phase CT-connected energy meter for industrial and commercial applications.
- Transformer-connected measurement up to 6 A for indirect metering applications.
- Class B / Class 1 active energy accuracy for dependable consumption measurement.
- Wide 57.7–288 V AC voltage range for flexible system integration.
- Integrated electrical pulse output for remote energy monitoring or alarm applications.
- Infrared communication interface for compatible meter-reading equipment.
- Measures essential electrical instrumentation values including voltage, current, frequency and power factor.
- MID approved for applications requiring compliant energy measurement.
Key Features
- ABB A42 EQ meter series with Steel functionality.
- Single-phase current-transformer-connected energy metering.
- 1 A / 6 A nominal current ratings.
- 6 A maximum meter current.
- 57.7–288 V AC nominal voltage range.
- 50 / 60 Hz nominal frequency.
- Active energy measurement with Class B / Class 1 accuracy.
- Measurement of active energy, voltage, current, frequency and power factor.
- Electrical pulse output for energy monitoring.
- Integrated infrared communication port.
- Single-tariff energy metering.
- IP20 protection rating.
- DIN rail mounting for straightforward installation in electrical panels.
Reliable CT-Connected Single-Phase Energy Monitoring
The ABB A42 111-100 uses an external current transformer to measure active electrical energy on single-phase circuits where indirect metering is required. This arrangement makes the meter suitable for electrical distribution and sub-metering applications where the primary circuit current cannot be measured directly by the meter.
In addition to accumulated active energy, the A42 series provides useful instrumentation values including voltage, current, frequency and power factor. The electrical pulse output enables energy consumption data to be transmitted to compatible monitoring equipment, while the infrared interface provides local communication with compatible ABB equipment.
Typical Applications
- Single-phase CT-connected electrical energy monitoring.
- Industrial electrical distribution systems.
- Commercial buildings and facility management.
- Energy sub-metering and consumption allocation.
- Electrical distribution panels and switchboards.
- Higher-current circuits requiring indirect measurement.
- Energy efficiency and consumption monitoring.
- Single-phase machinery and equipment circuits.
