Shelly Pro EM - 50A
Shelly Pro EM - 50A - Image 2
Shelly Pro EM - 50A - Image 3

Shelly Pro EM – 50A

£74.99

Out of stock

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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

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