Shelly Pro 3EM Switch Add-on

A galvanically isolated switch designed to expand the capabilities of your Shelly Pro 3EM device. This add-on allows you to easily control contactors and other electrical devices, giving you greater flexibility and control over your consumption.

• Dry contacts
• DIN-rail mountable

*Only compatible withShelly Pro 3EM!

Load shedding

Keep track of how much energy your solar panels and wind turbines are generating and save effortlessly by controlling your consumption with Shelly Pro 3EM Add-on. Connect Shelly Pro Add-On to your appliances and use Shelly Pro 3EM’s real-time information on how much energy has been generated and consumed. When you need to save energy, Shelly Pro3EM Add-on can automatically switch off non-essential appliances in your home.

Weather-based control

Shelly Pro 3EM, enhanced with the Shelly Pro 3EM Add-on, offers weather-driven energy optimization. By scripting, you can efficiently control your appliances based on the weather forecast. Upon receiving real-time weather updates, Shelly Pro 3EM takes measures as defined in the script. For example, if the forecast indicates that it’s going to be a sunny day, Shelly Pro 3EM Add-On can automatically turn off the heating anticipating higher temperatures.

PV systems balancing

When your PV system is producing more energy than your home consumes, Shelly Pro 3EM Add-On can automatically activate appliances to make use of it. For example, you can set it to turn on your water heater, charging station for electric vehicles, or other energy-intensive appliances. This way, you make the most of the abundant energy generated by your PV system and reduce dependency on the grid.

Technical Specifications:

Physical
Size (HxWxD): 94 x 19 x 69 0.5 mm / 3.70 x 0.75 x 2.71 0.02 in
Weight: 20 1 g / 0.70 0.05 oz
Mounting: DIN rail, attached to a Shelly Pro 3EM
Screw terminals max torque: 0.4 Nm / 4.43 lbin
Conductor cross section: 0.5 to 2.5 mm / 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
Color: 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: N/A
Power supply voltage DC: 3.3 V and 12 V (from Shelly Pro 3EM device)
Power consumption: < 1 W

Output circuits ratings
Max switching voltage AC: 240 V
Max switching voltage DC: 30 V
Max switching current AC: 2 A
Max switching current DC: 2 A