How many phases and what current does the Shelly Pro 3EM-3CT63 measure?

It measures three phases using three 63A CT current clamps each; it can also work in a single-phase configuration.

What accuracy class does the meter have?

It has Class B accuracy for active energy, with about ±1% error for voltage and current in the 2-63A range.

What connectivity options are available?

Wi-Fi 802.11 b/g/n on 2.4 GHz, Bluetooth 4.2 for local setup and an RJ45 Ethernet port for a wired connection.

Does it integrate with Home Assistant and Shelly Cloud?

Yes, the device supports Modbus, MQTT and RPC with TLS and is managed via the Shelly Smart Control app or through Home Assistant.

How long is consumption data stored?

The meter stores at least 60 days of data at 1-minute resolution, with timestamps maintained by the built-in clock.

Can I install the meter in the panel myself?

Mounting and wiring in a 230/400V panel must be done by a licensed electrician; check that each CT clamp arrow points toward the load.

Shelly Pro 3EM-3CT63 3-phase meter

Name: Shelly Pro 3EM-3CT63 three-phase DIN-rail energy meter with 3 CT clamps 63A
Brand: Shelly
SKU: SHELLY-PRO-3EM-3CT63

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Compatibility

Works with these ecosystems

Protocols

Wi-Fi
BLE
Ethernet

Ecosystems

Home Assistant
eWeLink

What it is, who it's for, what it does

About this product

The Shelly Pro 3EM-3CT63 is a three-phase energy meter that mounts on a DIN rail inside the distribution board and measures consumption on each of the three phases using three 63A CT current clamps. The device reports voltage, current, active and apparent power, power factor and accumulated energy per channel in real time.<br><br>With Class B accuracy for active energy and contactless measurement through the CT clamps, the model suits three-phase homes, workshops and photovoltaic installations where both consumption and production need to be tracked. Connectivity covers Wi-Fi, Bluetooth 4.2 and an RJ45 Ethernet port for a stable network integration.<br><br>It supports Modbus, MQTT and RPC with TLS encryption, stores at least 60 days of data at 1-minute resolution and is managed from the Shelly Smart Control app. Voltage range is 100-260V at 50/60 Hz.

Delivery
Free from 1500 MDL
Returns
30 days to return
Warranty
24 months

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CasaSmart essentials

What it works with, what it needs, what you can do

Verified compatibility

We test every device for these ecosystems. For non-standard integrations contact us before ordering.

Home Assistant
Zigbee
Matter
KNX
Wi-Fi

Install & requirements

What you need on your side and what we deliver.

Zigbee hub or Matter gateway for wireless variants
65 mm back-box or DIN panel for wired variants
Local setup on Home Assistant — included in install

Request install quote

Smart scenarios

Three typical automations we set up after the install.

01Morning: warm light + blinds up + climate at 22 °C
02Leaving: lights off, arm sensors, close the gas
03Evening: warm ambient + cinema scene

Where it works

Use cases

A Chisinau home with a three-phase grid sees which phase is loaded and balances the load.

Track consumption on each of the three phases in real time directly from the Shelly app.

An owner splits the electricity bill between two apartments fed from the same panel.

Measures accumulated energy on separate channels to split costs between tenants or zones.

A solar installation tracks how much the panels produce and how much is used locally.

Four-quadrant measurement tracks both consumption and energy fed back into the grid.

Analytics

See consumption — save on bills

Real-time consumption tracking via the eWeLink app. Daily, weekly and monthly history helps identify the most energy-hungry devices.

For the installer

Technical specifications

full spec · wiring · datasheet

Power

Phases / channels: 3 (three-phase or single-phase)
CT clamp rating: 3x 63 A
Voltage range: 100-260 V
Frequency: 50/60 Hz
Accuracy class (active energy): B
Power consumption: < 3 W

Wireless

Wi-Fi: 802.11 b/g/n 2.4 GHz
Bluetooth: 4.2

Connectivity

Ethernet: 1x RJ45
Protocols: Modbus, MQTT, RPC (TLS)

Other

Data storage: 60 days at 1-min resolution

Physical

Device dimensions: 94x19x69 mm
CT dimensions: 14x54x26 mm
Mounting: DIN rail
Conductor cross section: 0.5-2.5 mm2

Environment

Operating temperature: -20 to 40 C
Humidity: 30-70 % RH

Full device datasheet

Support

Frequently asked questions

How many phases and what current does the Shelly Pro 3EM-3CT63 measure?
It measures three phases using three 63A CT current clamps each; it can also work in a single-phase configuration.
What accuracy class does the meter have?
It has Class B accuracy for active energy, with about ±1% error for voltage and current in the 2-63A range.
What connectivity options are available?
Wi-Fi 802.11 b/g/n on 2.4 GHz, Bluetooth 4.2 for local setup and an RJ45 Ethernet port for a wired connection.
Does it integrate with Home Assistant and Shelly Cloud?
Yes, the device supports Modbus, MQTT and RPC with TLS and is managed via the Shelly Smart Control app or through Home Assistant.
How long is consumption data stored?
The meter stores at least 60 days of data at 1-minute resolution, with timestamps maintained by the built-in clock.
Can I install the meter in the panel myself?
Mounting and wiring in a 230/400V panel must be done by a licensed electrician; check that each CT clamp arrow points toward the load.

Same ecosystem

Works together

Devices that run in the same smart-home ecosystem.

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—

Shelly

Shelly Wave Pro Shutter - Z-Wave DIN-rail roller shutter and blind controller

—

Shelly

Shelly Wave PRO 2PM Z-Wave 2-channel DIN-rail relay with metering

—

Shelly

Shelly Wave Pro 2 - Z-Wave 2-channel DIN-rail relay

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Same category

Questions about this product?

A CasaSmart manager calls you within 1–2 working hours and answers anything — compatibility, install, alternatives.

+373 60 944 922

Updated: 18 June 2026· reviewed by CasaSmart Expert Team

Compatibility