Shelly Pro 3EM RC – Smart Three-Phase Energy Meter with Rogowski Coils
The Shelly Pro 3EM RC is a professional smart energy meter suitable for industrial use, capable of connecting three Rogowski coils (contactless current measurement). It is ideal for detailed monitoring of energy consumption in small and medium-sized enterprises, whether for entire buildings or individual systems.
Main features:
- Maximum measurement range: up to 2000 A per phase
- 4-quadrant measurement: precise tracking of active, reactive, import, and export energy
- DIN rail mountable design
- Multiple wiring options: suitable for both single-phase and three-phase systems
- Rogowski coil current sensing: contactless, quick, and safe installation
- Phase sequence error detection: optionally enabled, detects A-B-C sequence errors based on zero crossings
- Per-channel calibration: precision adjustment possible with at least 500 W load
- Load threshold detection: no energy is added to statistics below 30 VA, and the user receives a warning
- Optical pulse indication: real-time energy usage is visibly trackable
- Real-time clock (RTC): stores precise timestamps even when the internet connection is lost
- Data logging: stores up to 60 days of consumption data on the device
- External contactor control: automated or script-controlled load switching is possible using the Shelly 3EM Switch Add-on
- Accuracy class: Class B (according to IEC 62053-21)
Communication and integration:
- Local and remote access: operates standalone on Wi-Fi networks but can also be accessed and controlled remotely via the internet
- Built-in web interface: configuration, monitoring, and control directly from a browser
- MQTT(s) support: easy integration into BMS and HMI systems
Applications:
- Monitoring power consumption in industrial facilities
- Energy efficiency analysis for SME building operations
- Contactless measurement without dismantling existing systems
- Automated energy-based control systems
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