Shelly 3EM-63 Gen3 – smart energy monitor

Shelly 3EM-63 Gen3 – smart energy monitoring device

Shelly 3EM‑63 Gen3 is a compact and capable energy metering solution designed for monitoring both three-phase circuits and three single-phase circuits. The device provides accurate real-time measurement of voltage, current, power and energy consumption for each phase and stores measurement data for up to 7 days at 1-minute resolution.

Shelly 3EM-63 Gen3 works standalone, with no hub required, using built-in Wi-Fi and Bluetooth connectivity, and is compatible with popular automation services and protocols such as MQTT, HTTP, REST API, WebSockets and more.

Key features:
✔ 4-quadrant electrical energy metering
✔ Real-time and historical energy data
✔ Photovoltaic (PV) support
✔ DIN rail mounting
✔ SDK support and scripting
✔ High Class B metering accuracy

Technical specifications

Parameter	Specification
Models	Shelly 3EM-63W Gen3 (with cable), Shelly 3EM-63T Gen3 (with flat terminal)
Dimensions (H × W × D)	21 × 54 × 42 mm (W), 31 × 54 × 42 mm (T)
Cable length	260 mm (including terminal)
Weight	58 g (W), 52 g (T)
Cable hole diameter	Ø 8 mm
Mounting	Above or below DIN rail
Material & colour	Plastic, white
Operating temperature	-20 °C … +40 °C
Humidity	30–70 % RH
Max altitude	2000 m
Supply voltage	220–240 V AC, 50/60 Hz
Power consumption	< 2 W
Current measuring range	0–63 A RMS per phase (130 A saturation)
Measurement accuracy	±1 % (2–63 A), ±2 % (1–2 A), ±5 % (0–1 A)
Measured parameters	Voltage, current, active/apparent power, energy, power factor, reactive energy
Data storage	up to 7 days (1-min resolution)
Data export	CSV, JSON (via RPC)
Connectivity	Wi-Fi 802.11 b/g/n, Bluetooth 4.2
Wi-Fi frequency/range	2401–2483 MHz, up to 30 m indoors / 50 m outdoors
Bluetooth range	up to 10 m indoors / 30 m outdoors
CPU and memory	ESP-Shelly-C38F, 8 MB Flash
Built-in temp. sensor	Yes
Features/Functions	Phase sequence error detection, no-load threshold 30 VA

Summary

Shelly 3EM-63 Gen3 is an advanced three-phase energy meter, ideal for accurately monitoring electricity consumption in both homes and small businesses. Thanks to its Wi-Fi/Bluetooth connectivity, **local storage of measured data】 and extended automation options, it fits well into modern smart home and energy management systems.

User manual: Shelly 3EM-63 Gen3 multilingual printed user and safety guide.pdf Manufacturer's website: Shelly 3EM-63 Gen3