WiFi energy meter Shelly 3EM-63W Gen3 — 3-channel wired power meter

Shelly 3EM-63W Gen3 — 3-channel wired power meter is a compact WiFi energy meter designed to measure electrical energy and instantaneous power on three separate circuits. The device reports per-channel and total readings for energy (kWh) and power (W), enabling continuous monitoring of consumption in homes, small businesses or solar installations. It connects to a local WiFi network and integrates with smart home systems to provide remote readouts and logging for usage analysis and fault detection.

Advantages

The Shelly 3EM-63W Gen3 offers three-channel measurement in a DIN-rail form factor, providing simultaneous per-phase and total power and energy data. Accurate reporting of both instantaneous power and cumulative energy simplifies monitoring and billing tasks. Native WiFi connectivity allows direct connection to home networks without additional hubs, while integration capability with common smart home platforms enables automation and historical data collection. The device is suited for retrofit and new installations where wired CT (current transformer) inputs and mains monitoring are required.

Suitable for

• Monitoring electricity consumption of single-phase or three-phase household circuits
• Tracking production and consumption in small solar PV systems
• Energy monitoring and billing for small businesses and workshops
• Integration into home automation systems for energy-based automations
• Detecting overloads or unusual consumption patterns across three circuits

Key specifications

• Three independent measurement channels
• Measures instantaneous power (W) and cumulative energy (kWh) per channel and total
• Wired connection using external current transformers (CT inputs)
• WiFi connectivity for remote data access and integration with smart home platforms
• DIN-rail compatible enclosure for panel mounting

How to use

Mount the Shelly 3EM-63W Gen3 on a DIN rail inside the distribution board and connect the supply and neutral according to the installation instructions. Fit the supplied or compatible current transformers around the conductors to be monitored and connect CT leads to the dedicated inputs. Configure WiFi and set up the device using the Shelly mobile app or the web interface, then integrate with your chosen smart home platform if required. After commissioning, monitor per-channel and total power and energy readings through the app, the device API or connected automation systems.

Recommendations

Install and configure the device in compliance with local electrical codes; installation should be performed by a qualified electrician. Use appropriate CTs rated for the conductors and currents in your installation. For reliable data logging and remote access, place the device where it can maintain a stable WiFi connection and ensure password-protected network access. Review device firmware updates and Shelly integration options to maintain compatibility with smart home systems.