{"product_id":"shelly-pro-3em-switch-add-on-din-rail-expansion-module-for-contactors","title":"Shelly PRO 3EM Switch Add-On DIN Rail Expansion Module for Contactors","description":"\u003cdiv\u003e\n\u003ch1\u003eShelly PRO 3EM Switch Add-On DIN Rail Expansion Module for Contactors\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eShelly PRO 3EM Switch Add-On\u003c\/strong\u003e is a \u003cstrong\u003egalvanically isolated switching module\u003c\/strong\u003e designed exclusively to expand the capabilities of the Shelly Pro 3EM three-phase energy meter. This \u003cstrong\u003eDIN-rail mountable add-on\u003c\/strong\u003e provides dry contact switching for controlling \u003cstrong\u003econtactors, relays, and other electrical appliances\u003c\/strong\u003e, enabling advanced load control and energy-based automation for residential, commercial, and industrial applications. Perfect for solar PV systems, energy management, and smart building automation in Australia.\u003c\/p\u003e\n\n\u003ch2\u003eWhy You'll Love the Shelly PRO 3EM Switch Add-On\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanically Isolated Dry Contacts\u003c\/strong\u003e: Safely control external contactors and electrical devices with potential-free switching up to 240V AC \/ 30V DC at 2A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless DIN-Rail Integration\u003c\/strong\u003e: Attaches directly to the Shelly Pro 3EM for compact, professional installation in switchboards and electrical panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-Based Automation\u003c\/strong\u003e: Automatically switch appliances on or off based on real-time energy consumption, generation thresholds, or schedules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolar \u0026amp; Renewable Energy Ready\u003c\/strong\u003e: Optimise solar PV systems by controlling loads when excess energy is generated, reducing grid dependency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional-Grade Reliability\u003c\/strong\u003e: Operates in demanding environments from -20°C to +40°C with a compact, durable design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5-Year Warranty\u003c\/strong\u003e: Shelly Pro devices come with a generous 5-year manufacturer warranty for peace of mind.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSmart Energy Automation for Solar \u0026amp; Beyond\u003c\/h2\u003e\n\u003cp\u003eWhen paired with the \u003cstrong\u003eShelly Pro 3EM\u003c\/strong\u003e, this add-on unlocks intelligent load management. Use real-time data to \u003cstrong\u003eautomatically activate water heaters, EV chargers, or HVAC systems\u003c\/strong\u003e when your solar panels are producing surplus energy. Conversely, shed non-essential loads during peak demand or low generation periods to save on electricity costs. Controlled via the \u003cstrong\u003eShelly Smart Control app\u003c\/strong\u003e (iOS \u0026amp; Android), you can create custom scenes, schedules, and automation scripts without needing a hub.\u003c\/p\u003e\n\n\u003ch2\u003eFlexible Control for Contactors \u0026amp; Electrical Devices\u003c\/h2\u003e\n\u003cp\u003eThe add-on provides \u003cstrong\u003eone load circuit input (I) and one load circuit output (O)\u003c\/strong\u003e with potential-free dry contacts, making it compatible with a wide range of resistive, capacitive, and inductive loads. Control contactors for high-power appliances, activate relays, or integrate with building management systems. The module is powered directly from the Shelly Pro 3EM via a proprietary serial interface, consuming less than 1W.\u003c\/p\u003e\n\n\u003ch2\u003eProfessional Installation \u0026amp; Monitoring\u003c\/h2\u003e\n\u003cp\u003eDesigned for electricians and installers, the Shelly PRO 3EM Switch Add-On features \u003cstrong\u003escrew terminals (0.5-2.5mm² \/ 20-14 AWG)\u003c\/strong\u003e with a maximum torque of 0.4 Nm. LED indicators provide instant status feedback: a red \u003cstrong\u003ePower\u003c\/strong\u003e LED confirms power supply, and a red \u003cstrong\u003eOut\u003c\/strong\u003e LED indicates when the relay contact is closed. Internal temperature sensing ensures safe operation and reporting.\u003c\/p\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSolar PV and renewable energy load balancing\u003c\/li\u003e\n\u003cli\u003eCommercial and industrial energy management\u003c\/li\u003e\n\u003cli\u003eMulti-dwelling units (apartments, condominiums, hotels)\u003c\/li\u003e\n\u003cli\u003eAgricultural and municipal installations\u003c\/li\u003e\n\u003cli\u003eSmart building automation and contactor control\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShelly PRO 3EM Switch Add-On module\u003c\/li\u003e\n\u003cli\u003eDIN rail mounting bracket\u003c\/li\u003e\n\u003cli\u003eUser and safety guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\n\u003ch3\u003ePhysical\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H × W × D)\u003c\/td\u003e\n\u003ctd\u003e94 × 19 × 69 mm (±0.5 mm) \/ 3.70 × 0.75 × 2.71 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e20 g (±1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail (attached to Shelly Pro 3EM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShell Material\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eElectrical\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e3.3 VDC and 12 VDC (from Shelly Pro 3EM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Voltage AC\u003c\/td\u003e\n\u003ctd\u003e240 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Voltage DC\u003c\/td\u003e\n\u003ctd\u003e30 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Current AC\u003c\/td\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Current DC\u003c\/td\u003e\n\u003ctd\u003e2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotential-Free Contact\u003c\/td\u003e\n\u003ctd\u003eYes (dry contacts)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Types\u003c\/td\u003e\n\u003ctd\u003eResistive, Capacitive, Inductive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eConnectivity \u0026amp; Interface\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection to Shelly Pro 3EM\u003c\/td\u003e\n\u003ctd\u003eShelly proprietary serial interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Circuit Inputs\u003c\/td\u003e\n\u003ctd\u003e1 (I terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Circuit Outputs\u003c\/td\u003e\n\u003ctd\u003e1 (O terminal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Terminals Wire Cross-Section\u003c\/td\u003e\n\u003ctd\u003e0.5 to 2.5 mm² \/ 20 to 14 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScrew Terminals Max Torque\u003c\/td\u003e\n\u003ctd\u003e0.4 Nm \/ 3.54 lbf·in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Strip Length\u003c\/td\u003e\n\u003ctd\u003e6 to 7 mm \/ 0.24 to 0.28 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eEnvironmental\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature\u003c\/td\u003e\n\u003ctd\u003e-20°C to +40°C \/ -5°F to +105°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e30% to 70% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Altitude\u003c\/td\u003e\n\u003ctd\u003e2000 m \/ 6562 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Temperature Sensing\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003ePower (red), Out (red)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eShelly Pro 3EM only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl App\u003c\/td\u003e\n\u003ctd\u003eShelly Smart Control (iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHub Required\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eCompliance \u0026amp; Warranty\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCE Compliance\u003c\/td\u003e\n\u003ctd\u003e2014\/35\/EU, 2014\/30\/EU, 2011\/65\/EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years (Shelly Pro devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003cp\u003e\u003cem\u003eSpecifications are sourced from the manufacturer product page and may be updated.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Shelly","offers":[{"title":"Default Title","offer_id":44390462914638,"sku":"PA-SHELLYPRO3EMSWITC","price":50.6,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/3134\/9838\/files\/shelly-pro-3em-switch-add-auvon-shelly.jpg?v=1790325814","url":"https:\/\/projectorsaustralia.com.au\/products\/shelly-pro-3em-switch-add-on-din-rail-expansion-module-for-contactors","provider":"Projectors Australia","version":"1.0","type":"link"}