The Shelly Pro 3EM is a DIN-rail mounted three-phase energy meter. Enhanced with all the flexibility of gen2 firmware and LAN connectivity, it provides professional integrators with additional options for end-customer solutions. The Shelly Pro 3EM reports accumulated energy, as well as instantaneous voltage, current and power factor per phase in real time.

• Can measure up to 120A per phase and neutral
• 4th quadrant measurement with multiple connection types
• Active energy Class B accuracy (IEC 62053-21 compliance based on manufacturer testing)
• Photovoltaic ready
• Phase sequence error detection (optional)
• Optical pulse to indicate energy consumption
• Measurement accuracy up to 1%
• Stores data in non-volatile memory,
• which can be retrieved for up to 60 days at 1-minute intervals
• Kit includes 3 pieces of 120A current transformers

New generation 3-phase energy meter

Shelly Pro 3EM is a Wi-Fi-controlled DIN-mounted 3-phase energy meter with Wi-Fi, Bluetooth and LAN connectivity. With an active energy measurement accuracy of 1%, the Shelly Pro 3EM can be used to individually monitor the consumption of any household appliances, electrical circuits and office equipment. It includes 60 days of historical data on the device with 1-minute resolution for each phase. In addition, its scripting functions allow for complex scenes and provide broader monitoring capabilities.

Industrial-grade security

Shelly Pro 3EM supports mTLS for MQTT, HTTP and secure outbound WebSockets. Its industry-grade security allows direct connections to cloud infrastructure, reducing the cost of deploying complex networks and VPNs.

Industrial installations

Shelly Pro 3EM provides MODBUS support for voltage, current, power and energy. You can accurately retrieve energy consumption and instantaneous voltage, current and power values. Our new firmware platform allows for a custom implementation that can report as fast as every 100 ms to your infrastructure.

Bi-directional energy consumption monitoring

Monitor your home, office or factory and avoid extra expenses or voltage drops that can damage your equipment and devices. Shelly Pro 3EM can calculate bidirectional consumption: energy produced and consumed for each of the three phases. The device can be configured to measure three separate circuits of a single-phase electrical system. See the quality of your electrical network in terms of active power, reactive power, voltage and power factor.

Local control

With Shelly Pro 3EM's scripting features and webhooks, you can now easily control other Shelly or Wi-Fi devices on your local network. Use these capabilities to set the exact parameters for heating, cooling or EV charging based on PV production and have your devices automatically consume energy consumption. All of this works without using the cloud.

Monitor and control solar panels

Track how much energy your solar panels or wind turbines are generating and save effortlessly. Shelly Pro 3EM provides real-time information on the performance of your solar and wind energy system, as well as historical data on how much energy has been generated and consumed every minute for the past 60 days. This helps control the flow of energy, getting the most from solar panels and wind turbines. To take it one step further, connect Shelly Pro 3EM to other Shelly devices and create scenes to trigger desired actions, such as turning off devices or sounding alarms.

Specifications

• • Size (WxSxG): 94x19x69 ±0.5 mm
  • Weight: 62 ±1 g
  • Mounting: DIN rail
  • Screw terminals Maximum torque: 0.4 Nm
  • Wire gauge: 0.5 to 2.5 mm² / 20 to 14 AWG (fixed, lanyard and stringed pupils)
  • Stripped wire length: 6 to 7 mm
  • Sheath material: Plastic
  • Color: White
  • Ambient temperature: -20°C to 40 °C
  • Humidity: 30% to 70% RH
  • Maximum altitude: 2000 m
  • AC supply voltage: 110 - 240 V, 50/60 Hz
  • DC supply voltage: N/A
  • 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 neutral): 0 - 120 A
  • Ammeters accuracy: ±1 % (2 - 120 A), ±2 % (1 - 2 A), ±5 % (0 - 1A)
  • Power and energy meters: Active and apparent power, Active and apparent energy, Power factor, Basic active energy and basic reactive energy
  • No load threshold: 30 VA per phase
  • Measurement data storage: At least 60 days of 1 min data resolution Data export:

• CSV for PQ recorded values export JSON format via RPC
• RF bandwidth: 2400 - 2495 MHz
• Max. RF Power: <20 dBm
• Wi-Fi Protocol: 802.11 b/g/n
• Wi-Fi Range: Up to 30 m / 100 feet indoors and 50 m (Depending on local conditions)
• Bluetooth Protocol: 4.2
• Bluetooth range: Up to 10 m / 33 feet indoors and 30 m (Depending on local conditions)
• Processor: ESP32-D0WDQ6
• Flash: 16 MB
• Webhooks (URL shares): 20 with 5 URLs per hook
• Scripting: mJS
• MQTT: Yes
• CoAP: No