Solplanet SDM230 Single-Phase Energy Meter with Modbus RTU, 100A Direct Measurement, DIN Rail Mount

Single-phase energy meter engineered for precise monitoring of Solplanet inverter systems. Directly measures up to 100A with Class 1 accuracy, delivering real-time data on voltage, current, power, and energy via Modbus RTU over RS485. The backlit LCD and DIN rail mounting make it a practical addition to any solar installation.

Advantages

Self-supplied power eliminates the need for an external source, while the 3000% overload capacity ensures resilience against current spikes. The IP51 front protection guards against dust and moisture, and the 2-year warranty provides long-term reliability.

Suitable for

• Residential solar PV systems with Solplanet inverters
• Energy monitoring in single-phase electrical panels
• Retrofit projects requiring DIN rail integration
• Commercial submetering applications up to 100A

Key specifications

• Measurement type: Single-phase (1P2W), direct connection up to 100A
• Nominal voltage: 230V AC (L-N), frequency 50/60Hz
• Communication: Modbus RTU over RS485 interface
• Accuracy: Class 1 per IEC 62053-21 for active energy
• Display: Backlit LCD showing kWh, kVarh, V, A, W, Var, VA, PF, Hz
• Mounting: DIN rail, 2 modules wide
• Operating temperature: -25°C to +55°C
• Pulse output: Configurable for energy counting
• Ingress protection: IP51 (front)
• Warranty: 2 years

Recommendations

For optimal performance, install the meter on a DIN rail close to the inverter and use twisted-pair cabling for the RS485 connection. Ensure the current does not exceed 100A to maintain accuracy and longevity.