Shelly Pro 3EM-120A 3-Phase DIN-rail Energy Meter

The Shelly Pro 3EM – 120A is a 3-phase energy meter that reports accumulated energy, real-time voltage, current, and power factor. It can measure up to 120A per phase, including the neutral, with an accuracy of 1%. The device stores data in non-volatile memory, allowing for retrieval of up to 60 days’ worth of data in 1-minute intervals.

£104.26 inc VAT

SKU: PRO-3EM-120A Category:

EAN / Barcode: 3800235268100

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Description

The Shelly Pro 3EM 120-A is a WiFi-operated, DIN-mountable 3-phase energy meter, offering WiFi, Bluetooth, and LAN connectivity for flexible and accurate energy consumption reporting. It can monitor up to 120A per phase with the help of the three included 120A clamps, making it suitable for monitoring individual home appliances, electrical circuits, and office equipment.

The Pro 3EM supports MODBUS for quick and seamless integration into existing setups and can measure 2-way energy consumption—both produced and consumed—across all three phases. This makes it ideal for installations utilizing renewable energy sources such as wind turbines or solar panels.

A higher-capacity version, the Shelly Pro 3EM 400A, is also available for measuring up to 400A per phase.

Product Specifications

Physical and Performance Attributes

Weight385 grams
Dimensions (L x W x H)150 × 110 × 90 mm

Misc Product Attributes

Dimensions (HxWxD): 94x19x69 mm / 3.70×0.75×2.71 in
Mounting: DIN rail
Ambient temperature: from -20 °C to 40 °C / from -5 °F to 105 °F
Humidity 30 % to 70 % RH
Max. altitude 2000 m / 6562 ft
Power supply: 110 – 240 VAC, 50/60Hz
Electrical consumption: < 3 W
Internal 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)
Phase sequence error detection: Yes (option)
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 through RPC
Wi-Fi protocol: 802.11 b/g/n
Wi-Fi frequency: 2412 – 2472 МHz (Max. 2483 MHz)
Wi-Fi max. RF output power: 15 dBm
Wi-Fi operational range (depending on local conditions):
-up to 50 m / 160 ft outdoors
-up to 30 m / 100 ft indoors
Bluetooth protocol: BLE 4.1
Bluetooth frequency: 2402 – 2480 MHz (Max. 2483.5 MHz)
Bluetooth operational range (depending on local construction):
-up to 30 m / 100 ft outdoors,
-up to 10 m / 33 ft indoors
Bluetooth max. RF output power: 5 dBm
CPU: ESP32
Flash: 16 MB
Webhooks (URL actions): 20 with 5 URLs per hook
Scripting: mJS
MQTT: Yes