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Shelly Pro EM - 50A
Shelly Pro EM - 50A
Shelly Pro EM - 50A

Shelly Pro EM - 50A

Tested with Home Assistant
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£79.99 - £79.99
£79.99
£79.99 - £79.99
£79.99
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Out of stock

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
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.

What’s Included
  • Shelly Pro EM energy meter
  • 2 × 50A current transformer clamps
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
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