Acrel ADF400L-2H-CE DIN-rail Ethernet meter—with its sophisticated design, high-speed communication, and precise metering—helps you achieve real-time, refined, and intelligent power management. Save labor, reduce costs, ensure safety, and promote energy conservation.
Compact design for easy installation.

Technical Parameter | ADF400L | |
Auxiliary power | Voltage | Three-phase 3*220V/380V power supply (for single-phase power supply, |
Power consumption | ≤10W | |
Voltage input | Rated voltage | 3×220/380V、3×57.7/100V |
Reference frequency | 50Hz | |
Current input | Input Current | 3×1(6)A(Instrument transformer access), 3*10 (80) (direct access) |
Starting current | 1‰Ib | |
Measuring performance | Measurement accuracy | 0.5s level |
Clock accuracy | ≤0.5s/d | |
Pulse | Pulse output | Each three-phase metering module has 1 active energy pulse |
Pulse Width | 80ms±20ms | |
Pulse constant | 3×1(6)A specification 6400 imp/kWh | |
3×10(80)A specification 400 imp/kWh | ||
Switch | Main module | Main module 2DI+2DO,Among them, DI is dry contact input |
Slave module | Transformer access slave module 4DI+4DO,Among them, DI is 220V wet contact input | |
Communication | Infrared interface | Infrared communication |
RS485 interface | MODBUS-RTU | |
Ethernet interface | Modbus-TCP、TCP/IP | |
Surroundings | Temperature | Operating temperature:-20℃~+60℃, |
Humidity | ≤95%RH,No condensation, no corrosive gas place | |
Altitude | ≤2000m | |
Direct Ethernet connection for high-speed transmission
A built-in 10/100M adaptive Ethernet port allows direct access to a LAN or the internet, delivering real-time, high-speed transmission of voltage, current, power, and energy data, eliminating meter reading delays.

High-precision single-phase metering
Designed specifically for single-phase AC power applications, it achieves Class 1 measurement accuracy, ensuring accurate and reliable data and providing a solid foundation for refined energy management.
Industrial-grade reliability
With a wide operating temperature range and strong anti-interference capabilities, it is suitable for diverse environments, including factories, computer rooms, and shops, ensuring continuous and stable operation.
real-time monitoring
Comprehensively monitors parameters such as voltage, current, power, power factor, frequency, and four-quadrant energy, providing real-time visibility into equipment operating status. Accurate Energy Consumption Statistics
Supports time-of-use metering of forward/reverse active energy and four-quadrant reactive energy, providing accurate data for energy consumption analysis and cost allocation.
Remote Automatic Meter Reading
Automatic remote data collection via Ethernet eliminates human error, significantly improving efficiency and reducing labor costs. Abnormal Power Usage Alert
Supports threshold settings and alarms for real-time monitoring of abnormal conditions such as overvoltage, undervoltage, and overload, improving power safety and reliability. Seamless System Integration
Supports Modbus-TCP protocol for rapid integration with energy management systems, business administration systems, power monitoring platforms, or cloud platforms, fully leveraging data value.
Where is it suitable?
Factory workshops: Accurately monitor the energy consumption of production lines and key equipment, optimize production cycles, and reduce unit energy consumption. Commercial buildings/stores: Per-tenant metering for clear cost accounting; monitor lighting and air conditioning energy consumption in shops and public areas. Communication base stations/data centers: Real-time monitoring of power usage for critical cabinets and IT equipment to ensure operational stability. Smart grid user terminals: Support monitoring of new power-consuming facilities such as distributed photovoltaics and charging stations. Schools/hospitals: Refined power management for teaching buildings, laboratories, and departmental wards.
Why choose the ADF400L-2H-CE?
Din-rail mounting and direct Ethernet connection eliminate the need for additional data acquisition equipment and complex wiring, significantly reducing installation and maintenance costs. Real-time data, efficient decision-making.
High-speed Ethernet transmission ensures real-time data, surpassing traditional RS485 and wireless methods, enabling rapid response and decision-making. Open protocols for easy integration.
Standard Modbus-TCP protocol offers strong compatibility and allows for quick integration into existing intelligent systems.
Originating from the leading domestic smart power meter brand, the products have been verified by many industry applications, and the quality and after-sales service are guaranteed.
Approve CE certification, it complies with EU safety, health and environmental protection standards and is suitable for a wider market.

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