SHELLY PRO 3EM SWITCH ADD-ON
USER AND SAFETY GUIDE
Read before use
This document contains important technical and safety information about the device, its safe use and installation.
[CAUTION] Before beginning the installation, please read carefully and entirely this guide and any other documents accompanying the device. Failure to follow the installation procedures could lead to malfunction, danger to your health and life, violation of law or refusal of legal and/or commercial guarantee (if any). Allterco Robotics EOOD is not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure of following the user and safety instructions in this guide.
Product Introduction
The Shelly Pro 3EM Switch Add-on is a galvanically isolated switch that extends the features of the Shelly Pro 3EM, allowing the control of contactors or other electrical devices.
Installation Instructions
[CAUTION] Danger of electrocution. Mounting/installation of the Device to the power grid has to be performed with caution, by a qualified electrician.
[CAUTION] Danger of electrocution. Every change in the connections has to be done after ensuring there is no voltage present at the Device terminals.
[CAUTION] Use the Device only with 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 may damage it.
[CAUTION] Do not connect the Device to appliances exceeding the given max load!
[CAUTION] Connect the Device only in the way shown in these instructions. Any other method could cause damage and/or injury.
[CAUTION] Do not install the Device where it can get wet.
If you are installing the Shelly Pro 3EM Switch Add-on to a Shelly Pro 3EM device that is already connected to the power grid, check that the breakers are turned off and there is no voltage on the terminals of the device you are attaching the Shelly Pro 3EM Switch Add-on to. This can be done with a phase tester or multimeter. When you are sure that there is no voltage, you can proceed to installing the Shelly Pro 3EM Switch Add-on.
Remove the mounting bracket (A) of the Shelly Pro 3 EM as shown in Fig. 2.
Attach the Shelly Pro 3EM Switch Add-on to the Shelly Pro 3EM device as shown in Fig. 3.
[CAUTION] Be very careful not to bend the Device header pins (Fig. 3(A)) when inserting them into the Shelly Pro 3EM device header connector (Fig. 3(B)).
Place the Shelly Pro 3EM with the attached Shelly Switch Add-on on the DIN rail (Fig. 4(A)) and insert the supplied double mounting bracket (Fig. 4(B)) to fix the attached devices to the DIN rail.
You can now proceed to connecting the cables as shown in Fig. 1.
[RECOMMENDATION] Connect the Device using solid single-core cables.
Connect the load circuit to the O terminal and the Neutral cable. Connect the I terminal to the circuit breaker.
If the Shelly Pro 3EM device, which the Shelly Pro 3EM Switch Add-on is attached to, has not been connected to the power grid, install it following its user and safety guide.
Diagrams and Connections
Fig. 1: Connection Schematic
Schematic diagram showing the Shelly Pro 3EM Switch Add-on connected to a Shelly Pro 3EM device. It illustrates connections for Live (L), Neutral (N), and the output terminals (O, I) to a load and circuit breaker.
Fig. 2: Mounting Bracket Removal
Illustration showing the removal of the mounting bracket (A) from the Shelly Pro 3EM device.
Fig. 3: Attaching the Switch Add-on
Diagram depicting the attachment of the Shelly Pro 3EM Switch Add-on to the Shelly Pro 3EM device, highlighting the header pins (A) and the header connector (B).
Fig. 4: DIN Rail Mounting
Visual representation of mounting the Shelly Pro 3EM with the attached Switch Add-on onto a DIN rail (A) and securing it with the double mounting bracket (B).
Legend (Fig. 1)
Device Terminals:
- O: Relay output terminal
- I: Relay input terminal
Cables:
- N: Neutral cable
- L: Live (110 - 240 VAC) cable
LED Indication
- Power (red): Lit when power supply is connected.
- Out (red): Lit when the output relay contact is closed.
Specifications
- Mounting: on a DIN rail, attached to a Shelly Pro 3EM
- Dimensions (HxWxD): 94x19x69 / 3.70x0.75x2.71 in
- Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F
- Max. altitude: 2000 m / 6562 ft
- Screw terminals max. torque: 0.4 Nm / 3.54 lbin
- Wire cross section: 0.5 to 2.5 mm² / 20 to 14 AWG
- Wire strip length: 6 to 7 mm / 0.24 to 0.28 in
- Power supply: 3.3 VDC and 12 VDC (from Shelly Pro 3EM device)
- Electrical consumption: < 1 W
- Max switching voltage AC: 240 V
- Max switching voltage DC: 30 V
- Max switching current: 2 A
- Potential-free contact: Yes
Declaration of Conformity
Hereby, Allterco Robotics EOOD declares that the equipment type Shelly Pro 3EM Switch Add-on is in compliance with Directive 2014/35/EU, 2014/30/EU, 2011/65/EU. The full text of the EU declaration of conformity is available at the following internet address: shelly.link/Pro3EM-switch-add-on_DoC
Manufacturer: Allterco Robotics EOOD
Address: 103 Cherni vrah Blvd., 1407 Sofia, Bulgaria
Tel.: +359 2 988 7435
E-mail: support@shelly.cloud
Official website: https://www.shelly.cloud
Changes in the contact information data are published by the Manufacturer on the official website. https://www.shelly.cloud
All rights to the trademark Shelly® and other intellectual rights associated with this Device belong to Allterco Robotics EOOD.
