ABB M-Bus CT-meter A44 213-100 (2CMA170535R1000)

Accurate energy measurement in three-phase networks with current transformer connection can be challenging, especially when remote reading and multi-tariff billing are required. The ABB M-Bus CT Meter A44 213-100 solves this by providing precise active and reactive energy metering with an integrated M-Bus interface for remote data collection.

Who is it for

This meter is intended for electricians, facility managers, and energy service companies who need to monitor consumption in commercial or industrial buildings, sub-metering applications, or utility billing where current transformers are used for high-current circuits.

Main features

• Three-phase current transformer connected meter with nominal voltage 3x57.7/100 V to 3x288/500 V AC
• Nominal current 1 A or 5 A via external current transformers
• Active energy accuracy class B (EN 50470-3), reactive energy class 2 (IEC 62053-23)
• M-Bus wired communication for remote reading and configuration
• LCD display with 7 digits and backlight for clear readings
• Measures active and reactive energy (import/export), power, voltage, current, frequency, and power factor
• Supports up to 4 tariffs with internal clock and battery backup
• Two configurable pulse outputs for energy pulses
• DIN rail mounting, width 7 modules (126 mm)
• MID approved for billing purposes

Specifications

• Meter type: Three-phase, current transformer connected
• Nominal voltage: 3x57.7/100 V - 3x288/500 V AC
• Nominal current: 1 A or 5 A (CT secondary)
• Frequency: 50/60 Hz
• Active energy accuracy: Class B (EN 50470-3)
• Reactive energy accuracy: Class 2 (IEC 62053-23)
• Communication: M-Bus (wired)
• Display: LCD, 7-digit with backlight
• Measured parameters: Active energy (import/export), reactive energy (import/export), power, voltage, current, frequency, power factor
• Mounting: DIN rail
• Width: 7 modules (126 mm)
• Pulse outputs: 2 configurable
• Tariff support: up to 4 tariffs
• MID approved: Yes
• Protection degree (front): IP51
• Protection degree (terminals): IP20
• Operating temperature: -40 °C to +70 °C
• Internal clock: Yes, with battery backup
• Wiring: 3-phase 3-wire or 4-wire
• Self-supplied: Yes

Tips

Ensure the current transformers are correctly sized and connected according to the meter's nominal current. The M-Bus interface allows integration into building management systems for centralized monitoring and billing.