Description
The Shelly Pro 3EM Switch Add-on is a smart expansion module designed to enhance the functionality of devices in the Shelly Pro 3EM series, enabling the control of contactors and other electrical equipment directly from the energy monitoring system.
This module functions as a galvanically isolated relay, offering a safe and efficient solution for automating electrical tasks based on measured consumption.
It mounts directly onto a DIN rail, connected to the Shelly Pro 3EM, making it ideal for professional applications where automatic consumption control is required.
Key features
- Extension module for Shelly Pro 3EM
- Enables control of contactors and electrical loads
- Galvanically isolated relay for enhanced safety
- DIN rail mounting
- Full integration with Shelly systems
- Ideal for industrial and BMS applications
Features and benefits
? Automatic consumption control – Activates or deactivates equipment based on monitored consumption (e.g. shutting down high-load devices when limits are exceeded).
? Seamless integration with Shelly Pro 3EM - Extends the energy meter’s capabilities → from monitoring → to active control.
? High safety - Galvanically isolated contact → additional protection for installations.
? Ideal for industrial automation
Perfect for:
- electrical panels
- photovoltaic systems
- BMS automation
- control of pumps / fans / equipment
Applications
- Industrial contactor control
- Electrical load automation
- Photovoltaic systems (consumption limitation)
- Commercial and industrial buildings
- Energy management systems
| General information |
| Model |
Shelly Pro 3EM Switch Add-on |
| Product type |
Relay control expansion module |
| Compatibility |
Shelly Pro 3EM |
| Installation |
DIN rail |
| Electrical interfaces |
| Input |
1 load circuit input (I) |
| Output |
1 load circuit output (O) |
| Power supply |
| Voltage |
3.3V / 12V (from Shelly Pro 3EM) |
| Power consumption |
< 1 W |
| Switching parameters |
| Maximum AC voltage |
240 V |
| Maximum DC voltage |
30 V |
| Maximum current |
2 A |
| Operating conditions |
| Temperature |
-20°C to +40°C |
| Humidity |
30% ~ 70% RH |
| Dimensions |
| Dimensions |
94 x 19 x 69 mm |
| Weight |
20 g |
| Material |
| Housing |
Plastic |
| Colour |
White |
| Safety |
| Protection |
Internal temperature sensor |
