Shelly Pro 3EM 120A v2
The Shelly Pro 3EM v2 is a next-generation DIN-rail energy meter that measures a single- or three-phase supply up to 120 A per phase (plus optional neutral) with Class B, ±1% accuracy.
Paired with the IQ EV Charger 2, it becomes the real-time metering brain behind smart charging: it continuously reports whole-home consumption and solar export across all three phases, so the charger always knows exactly how much spare capacity is available. The result is EV charging that dynamically uses every free amp without tripping your main fuse, and can run purely on surplus solar. Matter-ready, with wired LAN, Wi-Fi and Bluetooth, it works locally without the cloud and keeps up to 60 days of 1-minute data on-device.
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- Dynamic load balancing (three-phase): Streams live per-phase current for the whole home to the IQ EV Charger 2, which automatically ramps charging up or down to use every spare amp - up to 120 A per phase - without overloading your main fuse
- Green charging: True 4-quadrant measurement detects surplus PV export in real time across all three phases, letting the charger divert excess solar energy into your EV rather than sending it to the grid
- True three-phase metering: Monitors all three phases (plus optional neutral) simultaneously, giving the charger a complete, balanced picture of household energy flow for precise load management
- Reliable real-time data: Simultaneous wired LAN (Ethernet), Wi-Fi and Bluetooth keep the current readings the charger depends on always available, with no signal drop-outs in the fuse box
- Local & hub-free: 60 days of on-device 1-minute logs and local control keep EV load balancing and monitoring running even if the internet connection is lost
- Mounting: Standard DIN rail (35 mm)
- Configuration: Single- or three-phase
- Supply voltage: 100 - 260 V AC, 50/60 Hz
- Measuring range: 0 - 120 A per phase (3x 120 A CTs incl.; neutral CT optional)
- Voltage measurement: 100 - 260 V per phase
- Accuracy: Class B active energy, ±1% (IEC 62053-21)
- Measurement: 4-quadrant (energy import & export)
- Relay: None built-in - contactor control via Shelly Pro Add-on
- Connectivity: Ethernet (RJ45 LAN), Wi-Fi 802.11 b/g/n, Bluetooth 4.2
- Protocols: MQTT, WebSocket, HTTP, TLS, Modbus TCP, scripting & webhooks
- Matter: Ready (after firmware update)
- Data Logging: Up to 60 days on-device at 1-minute resolution (non-volatile)
- Power consumption: < 3 W
- Operating temperature: -20 °C to 40 °C
- Dimensions: 94 x 19 x 69 mm
- Weight: 62 g
- 1x Shelly Pro 3EM v2
- 3x 120 A Current Transformers
- 1x user & safety guide
(Neutral current transformer is optional and not included.)
