Shelly Pro EM – 50A
£74.99
Out of stock
Overview
Shelly Pro EM-50A is a professional DIN-rail single-phase energy meter with integrated dry-contact output designed for accurate monitoring and contactor control. It features two independent measurement channels on the same phase, supports 4-quadrant energy measurement, and provides real-time data for voltage, current, and power. With LAN, Wi-Fi, and Bluetooth connectivity, local data storage, and photovoltaic readiness, Shelly Pro EM-50A is ideal for advanced residential, commercial, and industrial energy management—all with no hub required.
Key features
- DIN-rail single-phase energy meter with integrated dry contacts
- Two independent measurement channels on the same phase
- Measures voltage, current, active and apparent power in real time
- 4-quadrant energy measurement with optical pulse indication
- Accuracy Class B (IEC 62053-21)
- Photovoltaic-ready for monitoring energy production and consumption
- Integrated dry contacts for contactor control of larger loads
- Local data storage up to 60 days at 1-minute resolution
- LAN, Wi-Fi, and Bluetooth connectivity
- Supports scripting, webhooks, MQTT, WebSocket, Modbus TCP, and secure protocols
Product information
Use cases
- Single-Phase Energy Monitoring
- Monitor real-time and historical energy consumption on single-phase electrical systems.
- Contactor and Load Control
- Use the integrated dry contacts to control contactors for higher-power loads.
- Solar and PV Monitoring
- Track photovoltaic energy production and bidirectional energy flow.
- Commercial and Professional Installations
- Deploy in electrical cabinets for reliable monitoring with wired and wireless connectivity.
- Energy Analysis and Optimisation
- Store and export detailed energy data to analyse usage patterns and optimise consumption.
Technical specifications
Electrical
Measurement type
Single-phase
Measurement channels
2 (same phase)
Current measurement
Up to 50A per channel (via CT)
Energy measurement
Active and apparent energy
Power measurement
Active and apparent power
Accuracy class
Class B (IEC 62053-21)
4-quadrant measurement
Yes
Optical pulse output
Yes
Data storage
Up to 60 days at 1-minute intervals
Switching
Integrated relay
Dry contacts
Use case
Contactor control for large loads
Connectivity
Ethernet (LAN)
Yes
Wireless
Wi-Fi 802.11 b/g/n
Bluetooth
Yes
Automation & Protocols
MQTT
Yes
Webhooks / URL actions
Yes
WebSocket
Yes
Modbus TCP
Yes
Scripting
Yes
Secure protocols
HTTPS, TLS, UDP
What’s included
- Shelly Pro EM energy meter
- 2 × 50A current transformer clamps
