19D-NX Modbus energy meter is Blue Jay's next-generation din-rail meter power meter. Using a 3M width expand model can build a max 40x3P4W or 120x1P2W energy metering system. A flexible selection of different modules can build the most suitable on-site integrated metering device. The 19D-NX din rail dc power meter uses CTs connect, and provides max 0.5 class metering accuracy. The default is RS485 Modbus-RTU port so it can be called an energy meter with RS485. Furthermore, the customized expand module of the 240v electric meter can provide extra IoT modules valid for different projects.
* Core unit provide 15W(12Vdc) drive capacity
* RS-485 Modbus/RTU Communications
* Optional Ethernet expand module
* Optional IoT expand module
Current measurement on inputs (TRMS) of the modbus energy meter | ||
Rating of CT secondary | 100mA, 50mA, 2.5mA | |
Measurement range | 0~11kA | |
Input consumption | <0.1kA | |
Accuracy | 0.5% (IEC61557-12) | |
Impedance | <10mΩ | |
Overload capacity | 1.2 times of rating, continuous | |
10 times of rating, 10s | ||
Voltage measurement (TRMS) of this 240v electric meter | ||
Measurement range | 18…300VAC | |
PT secondary | 100VAC/ 400VAC | |
Input consumption | <0.1VA | |
Accuracy | 0.5% (IEC61557-12) | |
Impedance | >1MΩ | |
Overload capacity | 1.2 times of rating, continuous | |
2 times of rating, 1s | ||
Frequency measurement | ||
Measurement range | 45…65Hz | |
Accuracy | ±0.02Hz | |
Energy accuracy | ||
Active energy | Class 1.0 (IEC 62053-22) | |
Reactive energy | Class 2.0 (IEC 62053-23) | |
Auxiliary power supply | ||
Rating | 12VDC | |
Consumption | <0.9W | |
Communication | ||
Link | RS485 (2/3 wires half duplex) | |
Protocol | Modbus RTU mode | |
MODBUS speed | 4800/9600 bauds | |
Safety | ||
Isolation withstand voltage | AC 1KV/ 1min |




