⚡ MID-Certified Sub-Metering – Precise, Compact, Cost-Effective
The Eastron SDM120-CT-Modbus-MID is a single-phase DIN-rail mounted energy meter designed for use with external current transformers (CTs). It allows accurate sub-metering in residential, commercial, and industrial settings and supports Modbus RTU over RS-485, making it ideal for integration into BMS or IoT energy monitoring systems.
✅ Accepts 100 A / 40 mA CTs (sold separately)
✅ Measures Voltage, Current, Active Power, Power Factor, Frequency, Energy (kWh)
✅ Modbus RTU communication via RS-485
✅ Configurable pulse output for kWh counting
✅ MID Certified for billing applications (EU)
✅ Compact 1-DIN module width, easy installation
✅ Ideal for use with LoRaWAN Modbus bridges, gateways, or BMS controllers
Typical Applications
🏢 Tenant sub-metering in shared buildings
⚙️ Energy management in industrial panels
📊 Integration into Modbus SCADA/BMS
🔌 Retrofitting existing panels with CT-based monitoring
Product Downloads
Model: SDM120-CT-Modbus-MID Measurement Type: Single-phase current transformer meter Input Voltage: 230 V AC (±20%) Input Current: 0–6 A (via external 100 A/40 mA CT – sold separately) Display: Backlit LCD (7-digit) Accuracy: Voltage/Current: Class 1 Active Energy: Class 1 (per IEC 62053-21) Communication: RS-485 Modbus RTU Baud Rate: 1200–9600 bps Pulse Output: 1 output (configurable, 1000 imp/kWh default) MID Certified: Yes (Measuring Instruments Directive 2014/32/EU) Data Measured: Voltage, Current, Power (kW), Power Factor, Frequency, Energy (kWh) Power Supply: Self-powered via voltage input Mounting: DIN rail (1 module wide) Protection Class: IP51 (front), IP20 (terminals) Operating Temperature: -25°C to +55°C Dimensions: 18 × 90 × 63 mm (W×H×D) Compliance: CE, RoHS, MID