Shelly 3EM-63 Gen3: Compact Three-Phase Energy Meter

Safety Information

⚠ WARNING! Risk of electric shock. Installation of the Device to the power grid must be performed carefully by a qualified electrician.
⚠ WARNING! Before installing the Device, turn the circuit breakers off. Use a suitable test device to make sure there is no voltage on the wires you want to connect. When you are sure that there is no voltage, proceed to the installation.
⚠ WARNING! Before making any changes to the connections, ensure there is no voltage present at the Device terminals.
⚠ CAUTION! Connect the Device only to a power grid and appliances that comply with all applicable regulations. A short circuit in the power grid or any appliance connected to the Device can cause fire, property damage, and electric shock.
⚠ CAUTION! Connect the Device only in the way shown in these instructions. Any other method could cause damage and/or injury.
⚠ CAUTION! The Device must be secured by a cable protection switch in accordance with EN60898-1 (tripping characteristic B or C, max. 63 A rated current, min. 6 kA interrupting rating, energy limiting class 3).
⚠ CAUTION! Do not use the Device if it shows any sign of damage or defect.
⚠ CAUTION! Do not attempt to repair the Device yourself.
⚠ CAUTION! The Device is intended only for indoor use.
⚠ CAUTION! Keep the Device away from dirt and moisture.
ⓘ Important Note: The Device comes with factory-installed firmware. To keep it updated and secure, Shelly Europe Ltd. provides the latest firmware updates free of charge. Installation of firmware updates is the user’s responsibility. Shelly Europe Ltd. shall not be liable for any lack of conformity of the Device caused by the failure of the user to install the available updates in a timely manner.

Product Description

Shelly 3EM-63 Gen3 is a compact energy meter designed for monitoring either three-phase systems or three independent single-phase circuits. It provides real-time reports on the accumulated energy, instantaneous voltage, current, active power, and apparent power for each phase or channel. The Device stores data in 1-minute intervals in non-volatile memory, which you can retrieve for the last 7 days.

The Device has an embedded web interface accessible at http://192.168.33.1 when connected directly to the Device access point, or at its IP address when you and the Device are connected to the same network. The Device can access and interact with other smart devices or automation systems if they are in the same network infrastructure. Shelly Europe Ltd. provides APIs for the devices, their integration, and cloud control. For more information, visit https://shelly-api-docs.shelly.cloud.

Installation Instructions

ⓘ Note: Follow the K->L marking on the Device for correct energy-flow measurement. To adapt the Device to various types of connections, you may need to replace the flat terminals of Device wires with other suitable wire lugs or connections. Follow the applicable local regulations.

Three-Phase Setup

Shelly 3EM-63T Gen3:

Insert the Neutral wire of the load circuit along with the Neutral (Blue) wire of the Device into the screw terminal of the circuit breaker Neutral pole (See Fig. 1). Tighten the screw to secure the wires in place.
Pass the phase wires of the load circuit through the apertures of the Device.
Insert the phase wires of the load circuit along with the flat terminals of the Device into the screw terminals of the circuit breaker phase poles. Tighten the screws to secure the wires and the flat terminals in place.

Diagram Description (Fig. 1): Illustrates the connection of Neutral and Phase A, B, C wires for a three-phase setup using the Shelly 3EM-63T Gen3, showing connections to a circuit breaker.

Shelly 3EM-63W Gen3:

Insert the Neutral wire of the load circuit along with the Neutral (Blue) wire of the Device into the screw terminal of the circuit breaker Neutral pole (See Fig. 2). Tighten the screw to secure the wires in place.
Pass the phase wires of the load circuit through the apertures of the Device.
Insert the phase wires of the load circuit together with the phase wires (Brown for Phase A, Black for Phase B, and Gray for Phase C) of the Device into the screw terminals of the circuit breaker phase poles. Tighten the screws to secure the wires in place.

Diagram Description (Fig. 2): Illustrates the connection of Neutral and Phase A, B, C wires for a three-phase setup using the Shelly 3EM-63W Gen3, showing connections to a circuit breaker with specific wire colors indicated.

Note: The Neutral pole of some 4-pole circuit breakers may be positioned to the right of the phase poles. In some electrical systems, the Neutral should not be disconnected by a circuit breaker. In this case, connect the Neutral wires of the Device and the load circuit to the Neutral bus, following your local regulations.

Monophase Setup

Shelly 3EM-63T Gen3:

Pass the phase wires of the load circuits through the apertures of the Device (See Fig. 3).
Insert the phase wires of the load circuits along with the flat terminals of the Device into the screw terminals of circuit breakers. Tighten the screws to secure the wires and the flat terminals in place.
Connect the Neutral wires of the Device and the load circuit to the Neutral bus, following your local regulations.

Diagram Description (Fig. 3): Illustrates the connection of a single phase wire and Neutral wire for a single-phase setup using the Shelly 3EM-63T Gen3, showing connections to a circuit breaker.

Shelly 3EM-63W Gen3:

Pass the phase wires of the load circuits through the apertures of the Device (See Fig. 4).
Insert the phase wires of the load circuits along with the phase wires (Brown for Phase A, Black for Phase B, and Gray for Phase C) of the Device into the screw terminals of circuit breakers. Tighten the screws to secure the wires and the flat terminals in place.
Connect the Neutral wires of the Device and the load circuit to the Neutral bus, following your local regulations.

Diagram Description (Fig. 4): Illustrates the connection of a single phase wire and Neutral wire for a single-phase setup using the Shelly 3EM-63W Gen3, showing connections to a circuit breaker with specific wire colors indicated.

LED Indications

Connection (varies):
- Blue light: AP mode.
- Red light: STA mode, not connected to Wi-Fi.
- Yellow light: STA mode, connected to Wi-Fi, not connected to Shelly Cloud or Shelly Cloud disabled.
- Green light: STA mode, connected to Wi-Fi and Shelly Cloud.
- Flashing Red/Blue: OTA update in progress.
Energy: Red light flashes when the Device is measuring energy according to settings, with frequency dependent on the energy flowing through the measured circuit.

Reset Button

Press and hold for 5 seconds for AP mode.
Press and hold for 10 seconds for factory reset.

Specifications

Physical

Size (HxWxD): 21x54x42 mm / 0.83x2.13x1.65 in (Shelly 3EM-63W Gen3, without wires); 31x54x42 mm / 1.22x2.13x1.65 in (Shelly 3EM-63T Gen3, without wire)
Wires length: 260 mm (including the flat terminal)
Weight: 58 g / 2.05 oz (Shelly 3EM-63W Gen3, including wires); 52 g / 1.83 oz (Shelly 3EM-63T Gen3, including wire)
CT aperture: Ø8 mm / Ø0.3 in
Mounting: On DIN-rail mounted MCBs or RCDs
Shell material: Plastic
Shell color: White

Environmental

Ambient working 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: 220-240 V~ 50/60 Hz (between LA and N)
Power consumption: < 2 W
External protection: Tripping characteristic B or C, max. 63 A rated current, min. 6 kA interrupting rating, energy limiting class 3

Sensors, Meters

Internal-temperature sensor: Yes
Voltmeters (RMS for each phase): 220-240 V~ 50/60 Hz
Voltmeters accuracy: ±1 %
Ammeters (RMS via CT for each phase): 0 - 63 A
Ammeters accuracy: ±1 % (2 - 63 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
No load threshold: 30 VA per channel
Measurement data storage: At least 7 days of 1 min data resolution
Data export: CSV for PQ recorded values, JSON format export through RPC

Radio

Wi-Fi: RF band: 2401 - 2483 MHz; Max. RF power: < 20 dBm; Protocol: 802.11 b/g/n; Range: Up to 50 m / 164 ft outdoors, up to 30 m / 98 ft indoors (depending on local conditions)
Bluetooth: Protocol: 4.2 with BLE; RF band: 2400-2483.5 MHz; Max. RF power: <4 dBm; Range: Up to 30 m / 98 ft outdoors, up to 10 m / 33 ft indoors (depending on local conditions)

Microcontroller unit

CPU: ESP-Shelly-C38F
Flash: 8 MB

Firmware capabilities

Webhooks (URL actions): 20 with 5 URLs per hook
Wi-Fi range extender: Yes
BLE Gateway: Yes
Scripting: Yes
MQTT: Yes
Encryption: Yes

Shelly Cloud Inclusion

The Device can be monitored, controlled, and set up through the Shelly Cloud home automation service. Use the service via the Android, iOS, or Harmony OS mobile application or any internet browser at https://control.shelly.cloud/. For instructions on connecting and controlling the Device from the Shelly app, refer to the application guide: https://shelly.link/app-guide. The Shelly mobile application and Shelly Cloud service are not required for the Device to function properly. This Device can be used standalone or with various other home automation platforms.

For security reasons, after successfully connecting the Device to the local Wi-Fi network, it is recommended to disable or password-protect the Device AP (Access Point).

Declaration of Conformity

Shelly Europe Ltd. declares that the radio equipment type Shelly 3EM-63 Gen3 complies with Directive 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at: https://shelly.link/3EM-63_Gen3_DoC

Disposal and Recycling

This refers to waste electrical and electronic equipment. It is applicable in the EU, US, and other countries for separate waste collection.

ⓘ Symbol Meaning: This symbol on the Device or in the accompanying literature indicates that it should not be disposed of in daily waste. The Device must be recycled to avoid possible damage to the environment or human health from uncontrolled waste disposal and to promote the reuse of materials and resources.

It is your responsibility to dispose of the Device separately from general household waste when it is no longer usable.

Manufacturer Information

Manufacturer: Shelly Europe Ltd.
Address: 103 Cherni Vrah Blvd., 1407 Sofia, Bulgaria
Tel.: +359 2 988 7435
E-mail: support@shelly.cloud
Official website: https://www.shelly.com

Changes in contact information are published by the Manufacturer on the official website.

All rights to the trademark Shelly® and other intellectual rights associated with this Device belong to Shelly Europe Ltd.

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