Shelly Pro 3EM-400

SH-SHELLY3EMPRO400
$475.40
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Choose with confidence, knowing all our products are from Authorised Australian Distributors and are backed by a solid Australian warranty. We strictly avoid grey imports.

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Overview

Shelly Pro 3EM-400 is a DIN rail mountable three-phase energy meter with gen2 firmware flexibility and LAN connectivity. It supports standalone operation within a local LAN/Wi-Fi network or integration with cloud-based home automation services via MQTT, HTTP, and WebSocket. All inbound connections support TLS encryption.


Real-Time Monitoring and Data Storage

• Reports accumulated energy, voltage, current, active power, and apparent power per phase

• Stores data in non-volatile memory for up to 60 days in 1-minute intervals

• Equipped with a real-time clock to maintain time accuracy even if SNTP connection is lost


Remote Access and Control

• Can be accessed, set up, and monitored remotely within the same network infrastructure

• Embedded Web Interface for monitoring, control, and settings adjustment


Important Notice

⚠ The Device does not have a built-in relay. Contactor control requires a Shelly Pro Add-on attached to the Shelly Pro 3EM-400.


Features

• 4 Quadrant measurement

• DIN rail mounting

• Multiple connection types

• Current transformer connection

• Phase sequence error detection* (option)

• Channel-to-channel calibration**

• No load threshold***

• Optical pulse indication of energy usage

• Real-time clock

• Data logs

• Accuracy Class B (IEC 62053-21)

• Photovoltaic ready


* Phase sequence error detection ensures the correct order of phase voltages and reports misalignment.

** Requires at least 5000 W load per channel.

*** If total load per channel drops below 30 VA, energy consumption will not be recorded.


Main Applications

Residential

Multi-Dwelling Units (MDU)

Light Commercial

Industrial

Agricultural

Government/Municipal

University/College

Specifications

Physical

Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in

Weight: 62 ±1 g / 2.19 ±0.05 oz

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 / 0.24 to 0.28 in

Shell material: Plastic

Colour: White

Environmental

Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F

Humidity: 30 % to 70 % RH

Max. altitude: 2000 m / 6562 ft

Electrical

Power supply voltage AC: 100 - 260 V, 50/60 Hz

Power supply voltage DC: N/A

Power consumption: < 3 W

Sensors, meters

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

Compatible CT CT 120A

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

Channel-to-channel calibration minimum load

500 W per channel

No load threshold: 30 VA per channel

Measurement data storage: At least 60 days of 1 min data resolution

Data export:

  • CSV for PQ recorded values
  • JSON format export through RPC

Radio

RF band: 2400 - 2495 MHz

Max. RF power: <20 dBm

Wi-Fi protocol: 802.11 b/g/n

Wi-Fi Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)

Bluetooth Protocol: 4.2

Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

MCU

CPU: ESP32-D0WDQ6

Flash: 16 MB

Firmware capabilities

Webhooks (URL actions): 20 with 5 URLs per hook

Scripting: Yes

MQTT: Yes

CoAP: No

Physical

Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in

Weight: 62 ±1 g / 2.19 ±0.05 oz

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 / 0.24 to 0.28 in

Shell material: Plastic

Colour: White

Environmental

Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F

Humidity: 30 % to 70 % RH

Max. altitude: 2000 m / 6562 ft

Electrical

Power supply voltage AC: 100 - 260 V, 50/60 Hz

Power supply voltage DC: N/A

Power consumption: < 3 W

Sensors, meters

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

Compatible CT CT 120A

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

Channel-to-channel calibration minimum load

500 W per channel

No load threshold: 30 VA per channel

Measurement data storage: At least 60 days of 1 min data resolution

Data export:

  • CSV for PQ recorded values
  • JSON format export through RPC

Radio

RF band: 2400 - 2495 MHz

Max. RF power: <20 dBm

Wi-Fi protocol: 802.11 b/g/n

Wi-Fi Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)

Bluetooth Protocol: 4.2

Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

MCU

CPU: ESP32-D0WDQ6

Flash: 16 MB

Firmware capabilities

Webhooks (URL actions): 20 with 5 URLs per hook

Scripting: Yes

MQTT: Yes

CoAP: No

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