Shelly Pro 3EM 120A
🔧 Key Features
- Three‑Phase Monitoring: Measures voltage, current, active and apparent power per phase in real time
- Energy Data Storage: Keeps consumption data in non‑volatile memory for up to 60 days, with 1‑minute resolution
- Connectivity: Works via LAN, WiFi, and Bluetooth; supports MQTT, HTTP, and WebSocket protocols
- Security: All inbound connections support TLS encryption for secure communication
- Standalone or Cloud: Operates locally in LAN/WiFi or integrates with cloud automation services
- Real‑Time Clock: Maintains correct time even if SNTP server connection is lost
- Embedded Web Interface: Local access for monitoring and configuration without external software
🔍 Smart hint
- LAN for Stability: Prefer LAN over WiFi for critical monitoring of industrial or residential 3‑phase systems.
- Energy Optimization: Use stored data to analyze consumption trends and optimize loads.
- Automation Integration: Connect via MQTT or HTTP to smart home hubs for automated energy management.
- Security First: Enable TLS to protect data when integrating with external services.
- Calibration: Ensure correct CT (current transformer) installation for accurate readings.
⚠️ Warnings
- Professional Installation Required: As a DIN rail device measuring mains electricity, it should be installed by qualified electricians.
- Voltage Range: Designed for 110–240 V AC three‑phase systems; not suitable for DC loads.
- CT Placement: Incorrect placement of current transformers can lead to inaccurate readings.
- Indoor Use: Intended for electrical panels; not suitable for outdoor or moisture‑prone environments.
- Data Handling: Device stores consumption data locally; ensure proper integration if long‑term archiving is needed.
📦 What’s Included
- Shelly Pro 3EM unit (DIN rail–mountable smart switch)
- Printed user and safety manual (multilingual)
- DIN rail compatibility (no extra mounting kit required)