Eastron SDM120CTM-40mA DIN Rail Energy Meter
The SDM120CTM-40mA is a compact 1-module (18mm) single-phase multifunction DIN rail energy meter. It provides precise measurement of key electrical parameters including active energy (kWh), reactive energy, voltage, current, power, power factor, frequency, and more.
Designed for use in residential, solar PV, industrial, and utility applications, the meter supports bi-directional energy monitoring, making it ideal for solar and other renewable energy systems.
The device operates with 40mA current transformers (CTs) and is compatible with a wide range of external CTs for flexible installation. It features 2 pulse outputs and Modbus RS485 communication for easy remote monitoring and system integration.
Key Features
1 DIN module width (18mm)
40mA CT-operated (external current transformer)
Bi-directional measurement (import/export)
Multi-parameter monitoring: kWh, W, V, A, PF, Hz, demand, etc.
LCD display with backlight for clear readings
2 Pulse outputs for energy data logging
RS485 Modbus RTU communication
Wiring configuration: 1P2W (Single Phase, 2 Wire)
Optimize and monitor your energy system with the SUN-SMART-CTO1 combined with the SUN-SMART-TXO1. Designed for precision, efficiency, and reliable communication, this smart energy monitoring kit is perfect for residential, commercial, and industrial applications.Key FeaturesSUN-SMART-CTO1 – Smart Energy Meter (CT)
Model: L1/N (Single Phase) or L1/L2/L3/N (Three Phase)
Operating Voltage: 85–300 V AC (L-N)
Frequency: 50Hz (45–55Hz) / 60Hz (55–65Hz)
Secondary Current: 50mA
Self Consumption: ≤2 W
AC Voltage Withstand: 4 kV / 1 min
Accuracy: ±0.1 V, ±0.01 A, ±0.01 Hz, ±1 W
Communication: LoRa / RS485, up to 200m barrier-free
Display: LCD shows Voltage, Current, Active Power, Reactive Power, Frequency, Power Factor, and Energy
Installation: DIN-Rail Mounting
Dimensions: 53 x 96 x 64 mm | Weight: 0.15 kg
Operating Temp: 0–60°C | Humidity: 0–75% | IP Rating: IP20
Warranty: 5 Years | Standards: IEC/EN61010-1
SUN-SMART-TXO1 – LoRa Transmission Module
Input Voltage: DC 5V
Communication: LoRa, up to 200m barrier-free
Frequency Range: 863–870 MHz | Built-in Antenna Gain: 0.79 dBi @ 868 MHz
Display: N/A (Transmitter only)
Operating Temp: 0–60°C | Humidity: 0–100% | IP Rating: P20 (IP65 after installation)
Dimensions: 137.8 x 31.3 x 31.3 mm | Weight: 45.8 g
Warranty: 2 Years | Standards: IEC/EN 62368-1
Why Choose the SUN-SMART Kit?
Complete Monitoring Solution: Works seamlessly as a set for accurate measurement and remote transmission of energy data.
Easy Installation: DIN-rail mounting for the meter and compact design for the transmitter.
Reliable Communication: LoRa provides long-distance wireless transmission without barriers.
Wide Compatibility: Supports single and three-phase systems with high accuracy.
Durable & Safe: Built to international standards with excellent protection and operational reliability.
Upgrade your power management with the reliable DDSU666 single-phase smart meter. Designed for homes, offices, and light commercial use, this smart meter delivers accurate energy measurement and helps you monitor electricity usage efficiently.
Model: DDSU666
Voltage: 230V
Current: 100A / 40mA
2P (2-pole)Supports remote reading for easy monitoringBuilt-in overload protection for safe operationEasy to install and highly durablePerfect for energy monitoring, cost control, and ensuring safe electrical usage.
Eastron SDM630-Modbus V2 Three-Phase Energy Meter
The Eastron SDM630-Modbus V2 is a direct-connected, multifunction DIN-rail energy meter for three-phase electrical systems. It measures and displays key electrical parameters and provides RS485 Modbus RTU communication for monitoring and system integration.
Key Features
Direct connection up to 100 A, with no external current transformers required
Supports 1P2W, 3P3W and 3P4W system configurations
RS485 Modbus RTU communication
Two pulse outputs for imported and exported energy
Bi-directional measurement of imported and exported energy
Password-protected configuration through the front-panel controls
Four-module, 72 mm DIN-rail format
Measured Parameters
Voltage, current, frequency, power factor, active power, reactive power, apparent power, imported and exported active energy, imported and exported reactive energy, and maximum demand over selectable periods of up to 60 minutes.
Input and Output Specifications
Rated current
10 A
Maximum current
100 A
Minimum current
0.5 A
Starting current
40 mA
Rated voltage and frequency
3 x 230/400 V AC, 50 Hz
Operating voltage range
80% to 120% of Un
Communication
RS485 Modbus RTU
Pulse outputs
2 outputs for imported/exported energy
Measurement Accuracy
Voltage
+/-0.5%
Current
+/-0.5%
Frequency
+/-0.2%
Power factor
+/-1%
Active, reactive and apparent power
+/-1%
Active energy
Class 1.0 (IEC 62053-21); Class B (EN 50470-1/3)
Reactive energy
Class 2 (IEC 62053-23)
Installation: Installation and configuration should be completed by a suitably qualified electrician in accordance with the applicable wiring rules and system requirements.
