3-phase Energy Meter Shelly PRO 3EM 120A Wi-Fi

Shelly PRO 3EM 120A WiFi Dual-Channel Electric Energy Meter

The Shelly Pro 3EM 120A is a professional three-phase electric energy meter that can be installed on a DIN rail. The device reports accumulated energy with 1% accuracy as well as real-time voltage, current, and power for each phase. It stores data for the last 60 days with a resolution of one minute for each phase, enabling precise analysis. It can operate independently on a local LAN and/or Wi-Fi network or be controlled via a home automation cloud service using MQTT, HTTP, and WebSocket protocols. Furthermore, it offers advanced scripting capabilities and extended monitoring options.

 

Manufacturer Shelly Model SPEM-003CEBEU120 AC Power Supply Voltage 100 - 260 V, 50/60 Hz Power Consumption < 3 W Internal Temperature Sensor Yes Voltmeters (RMS for each phase) 100 - 260 V Voltmeter Accuracy ±1% Ampermeters (RMS via current transformers for each phase and Neutral) 0 - 120 A Compatible Current Transformer (CT) CT 120A Ampermeter Accuracy ±1% (2 - 120 A), ±2% (1 - 2 A), ±5% (0 - 1 A) Active and Apparent Power and Energy Meters Active and apparent power, active and apparent energy, power factor, active fundamental energy, and reactive fundamental energy Channel Calibration at Minimum Load 500 W per channel No-Load Threshold 30 VA per channel Measurement Data Storage At least 60 days with 1-minute data resolution Wi-Fi Protocol 802.11 b/g/n Wi-Fi Range Up to 30 m indoors and 50 m outdoors Bluetooth Protocol 4.2 Bluetooth Range Up to 10 m indoors and 30 m outdoors CPU ESP32-D0WDQ6 Flash Memory 16 MB Dimensions 94 x 19 x 69 ±0.5 mm Weight 62 ±1 g Mounting DIN rail Housing Material Plastic Ambient Temperature -20°C to +40°C Humidity 30% to 70% RH Maximum Altitude 2000 m