SolarEdge SE-MTR-3Y-400V-A Three-Phase Energy Meter with Modbus RTU, DIN Rail Mount, CT 5A, Class 1

Accurate energy monitoring is critical for optimizing solar PV systems and managing consumption, yet many installations lack reliable three-phase measurement. The SolarEdge SE-MTR-3Y-400V-A energy meter fills this gap, providing precise data on active, reactive, and apparent energy, as well as voltage, current, and power factor. Designed for seamless integration with SolarEdge inverters and the monitoring platform, it enables real-time visibility into production and consumption, supporting export limitation and self-consumption strategies.

Who is it for

This meter is ideal for solar installers, system integrators, and facility managers who need robust three-phase energy monitoring in residential, commercial, or industrial PV installations. It suits projects requiring DIN rail mounting and indirect current measurement via external CTs with 5A secondary, ensuring compatibility with a wide range of electrical panels.

Main features

• Three-phase energy metering for 230/400V AC networks, 50/60 Hz
• Indirect measurement via current transformers (CTs) with 5A secondary
• Modbus RTU communication over RS485 for reliable data transfer
• Active energy accuracy Class 1 (IEC 62053-21/22) and reactive energy Class 2 (IEC 62053-23)
• Measures active, reactive, and apparent power, voltage, current, frequency, power factor, and energy (import/export)
• Compact DIN rail housing (3 modules) with IP20 enclosure and IP51 terminal protection
• Wide operating temperature range from -25°C to +55°C
• Low power consumption: less than 10 VA per phase

Specifications

• Nominal voltage: 3x230/400V AC
• Nominal frequency: 50/60 Hz
• Current measurement: indirect via CTs, secondary 5A
• Communication: Modbus RTU, RS485 interface
• Active energy accuracy: Class 1 (IEC 62053-21/22)
• Reactive energy accuracy: Class 2 (IEC 62053-23)
• Measured parameters: active/reactive/apparent power, voltage, current, frequency, power factor, active/reactive energy (import/export)
• Mounting: DIN rail, 3 modules wide
• Operating temperature: -25°C to +55°C
• Storage temperature: -40°C to +85°C
• Relative humidity: up to 95% non-condensing
• Enclosure protection: IP20; terminals: IP51
• Power consumption: <10 VA per phase
• Compatibility: SolarEdge inverters and monitoring platform

Tips

For accurate readings, ensure CTs are correctly sized and installed according to the phase orientation. Use shielded twisted-pair cable for RS485 connections and terminate the bus properly to avoid communication errors. Configure the meter address via Modbus before commissioning to integrate with the SolarEdge monitoring portal.