Shelly Pro 3EM + 3x 120A Clamps – Power Measurement

Shelly Pro 3EM is a 3-phase energy meter that can be mounted in a DIN rail and operated through Wi-Fi, Bluetooth, and LAN. It has an active energy measurement accuracy of 1% and can monitor energy consumption of appliances, electric circuits, and office equipment individually. It also has 60 days of on-device historical data with 1-minute resolution for each phase and scripting functionalities for executing complex scenes and broader monitoring abilities. Additionally, it supports mTLS, MODBUS for industrial installations, allows for 2-way energy consumption monitoring, real-time reporting and can be controlled through the Shelly Cloud App available for iOS, Android, and Huawei.

Features:

• Current Transformer: 3 x CT120 included in the package
• Size : 94 x 19 x 69 ±0.5 mm
• Weight: 62 ±1 g
• Mounting: DIN rail
• Screw terminals max torque: 0.4 Nm / 4.43 lbin
• Conductor cross section: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs)
• Conductor stripped length: 6 to 7 mm
• Shell material: Plastic
• Color: White
• Ambient temperature: -20 °C to 40 °C
• Humidity: 30 % to 70 % RH
• Max. altitude: 2000 m
• Power supply voltage AC: 110 – 240 V, 50/60 Hz
• Power consumption: < 3 W
• Temperature sensor: Yes
• Voltmeters (RMS for each phase): 100 – 260 V
• Voltmeters accuracy: ±1 %
• Ammeters (RMS via CT for each phase and the Neutral): 0 – 120 A
• Ammeters accuracy: ±1 % (2 – 120 A), ±2 % (1 – 2 A), ±5 % (0 – 1 A)
• Power and energy meters: Active and apparent power; Active and apparent energy; Power factor; 
• Fundamental active and fundamental reactive energy
• Measurement data storage: At least 60 days of 1 min data resolution
• Data export: CSV for PQ recorded values, JSON format export trough RPC
• RF band: 2401 – 2495 MHz
• Max. RF power: <20 dBm
• Wi-Fi protocol: 802.11 b/g/n
• Wi-Fi Range: Up to 30 m indoors and 50 m outdoors (Depends on local conditions)
• Bluetooth Protocol: 4.2
• Bluetooth Range: Up to 10 m indoors and 30 m outdoors (Depends on local conditions)
• CPU: ESP32-D0WDQ6
• Flash: 16 MB
• Webhooks (URL actions): 20 with 5 URLs per hook
• Scripting: mJS
• MQTT: Yes
• CoAP: No