{"id":5229,"date":"2025-07-13T17:08:43","date_gmt":"2025-07-13T17:08:43","guid":{"rendered":"http:\/\/iotronx.com\/izdelek\/shelly-pro-3em-3ct63-3-fazni-pametni-stevec-energije-wi-fi-ethernet-3-x-63a\/"},"modified":"2025-09-28T12:00:39","modified_gmt":"2025-09-28T12:00:39","slug":"shelly-pro-3em-3ct63-3-phase-smart-power-switch-wi-fi-ethernet-3-x-63a","status":"publish","type":"product","link":"https:\/\/iotronx.com\/en\/izdelek\/shelly-pro-3em-3ct63-3-fazni-pametni-stevec-energije-wi-fi-ethernet-3-x-63a\/","title":{"rendered":"Shelly Pro 3EM-3CT63 - 3-phase smart energy meter Wi-Fi + Ethernet (3 x 63A)"},"content":{"rendered":"

Shelly Pro 3EM-3CT63<\/strong> is a single-phase or three-phase DIN rail-mountable power meter that can operate stand-alone on a local LAN or Wi-Fi network or connect to cloud automation platforms via Modbus, MQTT, HTTP or WebSocket with TLS encryption.<\/p>\n

Its special combined 3-phase current transformer (CT) is designed to be mounted directly above the circuit breaker.<\/p>\n

It reports real-time data by phase\/channel, including voltage, current, active and apparent power and total energy consumed. It is equipped with a built-in real-time clock and stores up to 60 days of data<\/strong> at 1-minute intervals. Settings and monitoring are fully accessible via the built-in web interface.<\/p>\n

Remark:<\/em> The device does not include a built-in relay! Load switching is only possible using the module <\/span>Shelly Pro 3EM Switch Add-on<\/em>.<\/span><\/p>\n

 <\/p>\n

Main features<\/h3>\n
    \n
  • Power measurement in 4 quadrants<\/li>\n
  • DIN rail mounting design<\/li>\n
  • Compatible with single-phase and three-phase systems<\/li>\n
  • Contactless current measurement via CT sensors<\/li>\n
  • Phase sequence detection (optional)<\/li>\n
  • Inter-channel calibration (min. 500 W load required)<\/li>\n
  • No-load threshold: 30 VA\/channel<\/li>\n
  • Optical display of consumption<\/li>\n
  • Real-time clock for accurate logging even in the event of a network outage<\/li>\n
  • Data storage: 60 days, resolution 1 minute<\/li>\n
  • External contactor control (requires Switch Add-on)<\/li>\n
  • Accuracy Class B (IEC 62053-21)<\/li>\n
  • Ready for photovoltaic systems<\/li>\n<\/ul>\n

     <\/p>\n

    Connectivity and protocols<\/h3>\n
      \n
    • LAN (Ethernet)<\/strong> - 1 \u00d7 RJ45 connector<\/li>\n
    • Wi-Fi<\/strong> - 802.11 b\/g\/n (2.4 GHz)<\/li>\n
    • Bluetooth 4.2<\/strong> - for initial configuration<\/li>\n
    • Supported by Modbus, MQTT, RPC, WebSocket<\/strong><\/li>\n
    • All incoming connection protocols protected by TLS encryption<\/strong><\/li>\n<\/ul>\n

       <\/p>\n

      Technical specifications<\/h3>\n
        \n
      • Dimensions:\n
          \n
        • Shelly Pro 3EM-3CT63: 94 \u00d7 19 \u00d7 69 mm<\/li>\n
        • Shelly 3CT63: 14 \u00d7 54 \u00d7 26 mm<\/li>\n<\/ul>\n<\/li>\n
        • Housing: plastic, white<\/li>\n
        • Operating temperature: -20\u00b0C to 40\u00b0C<\/li>\n
        • Humidity: 30 % to 70 % RH<\/li>\n
        • Power supply: 100-260 VAC 50\/60 Hz<\/li>\n
        • Power consumption: < 3 W<\/li>\n
        • Protection: type B or C, 16 A, min. breaking capacity 6 kA<\/li>\n
        • Voltage range: 100-260 V (\u00b11 %)<\/li>\n
        • Current range: 0-63 A with precision:\n
            \n
          • \u00b11 % (2-63 A)<\/li>\n
          • \u00b12 % (1-2 A)<\/li>\n
          • \u00b15 % (0-1 A)<\/li>\n<\/ul>\n<\/li>\n
          • Internal temperature sensor: yes<\/li>\n
          • Data storage: at least 60 days with 1 minute resolution<\/li>\n
          • Data export: CSV and JSON (via RPC)<\/li>\n<\/ul>\n

             <\/p>\n

            Software capabilities<\/h3>\n
              \n
            • 20 webhooks, each with up to 5 URLs<\/li>\n
            • Support for script automation<\/li>\n
            • MQTT compatible<\/li>\n
            • Encrypted communication via TLS<\/li>\n<\/ul>\n

               <\/p>\n

              Monitoring and indicators<\/h3>\n
                \n
              • Button:\n
                  \n
                • Short press - switch relay state (requires Switch Add-on)<\/li>\n
                • 5 seconds - AP mode activation<\/li>\n
                • 10 seconds - factory reset<\/li>\n<\/ul>\n<\/li>\n
                • LED indicators:\n
                    \n
                  • Red - Power connected<\/li>\n
                  • Blue - AP mode<\/li>\n
                  • Yellow - Wi-Fi connected, Shelly Cloud disabled<\/li>\n
                  • Green - Wi-Fi and Shelly Cloud connection established<\/li>\n
                  • Flashing red\/blue - OTA update in progress<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                     <\/p>\n

                    Installation notes<\/h3>\n
                      \n
                    • DIN rail mounting (Shelly Pro 3EM module)<\/li>\n
                    • CT sensors are attached directly to the phase conductors (at the circuit breaker)<\/li>\n
                    • Direction of flow: must follow the orientation K\u2192L<\/li>\n
                    • ATTENTION:<\/strong> Only connect\/disconnect the LAN cable when the device is switched off!<\/li>\n<\/ul>\n

                       <\/p>\n

                      Compatible platforms and integrations<\/h3>\n
                        \n
                      • Shelly Cloud<\/li>\n
                      • Home Assistant<\/li>\n
                      • OpenHAB<\/li>\n
                      • Domoticz<\/li>\n
                      • REST API<\/li>\n
                      • MQTT<\/li>\n<\/ul>\n

                         <\/p>\n

                        Examples of use<\/h2>\n

                        Industrial electricity distribution:<\/h3>\n

                        In industrial environments with complex power distribution systems, a combined three-phase CT mounted above the circuit breaker can effectively measure and monitor currents. This is crucial for optimising consumption and detecting potential problems in real time.<\/p>\n

                         <\/p>\n

                        Commercial buildings and facilities:<\/strong><\/h3>\n

                        In office buildings, where space is often at a premium in electrical cabinets, the compact design of the CT is very useful. Direct mounting to circuit breakers allows efficient use of space and accurate current measurement.<\/p>\n

                         <\/p>\n

                        Motor Control Centres (MCCs):<\/h3>\n

                        In production plants with multiple circuit breakers, the combined three-phase CT is the perfect solution to monitor motor currents and help with preventive maintenance.<\/p>\n

                        Data centres:<\/h3>\n

                        For data centres, where accurate monitoring of consumption is crucial, CT sensors mounted above circuit breakers allow accurate current measurements of critical equipment.<\/p>\n

                        Renewable energy:<\/h3>\n

                        Combined three-phase CT sensors can be used in solar and wind power plants for accurate current measurements directly at circuit breakers in control cabinets.<\/p>\n

                        Monitoring of substations:<\/h3>\n

                        In electrical substations, where space is at a premium, mounting CT sensors above circuit breakers is an excellent solution for monitoring the current in individual phases and maintaining grid stability.<\/p>\n

                        Building Management Systems (BMS):<\/h3>\n

                        Accurate analysis of current consumption is crucial for smart buildings. Combined CT sensors allow this data to be collected for energy management and responsive load control.<\/p>\n

                        Power quality control:<\/h3>\n

                        In environments with critical equipment, such as medical facilities or laboratories, CTs are used to monitor current ripples and detect anomalies that could affect the quality of the power supply.<\/p>\n

                        Electrical cabinet upgrades:<\/h3>\n

                        For electrical renovations where space is at a premium, CT combination sensors provide a compact and accurate solution for current measurement.<\/p>\n

                        Smart grids:<\/h3>\n

                        In the context of smart grids, real data is key. CTs above circuit breakers provide accurate information for monitoring and optimising the network.<\/p>\n

                        In all these use cases, the combined three-phase CT represents a space-efficient and integrated solution for current measurement and contributes to increased efficiency, safety and reliability of electrical systems.<\/p>","protected":false},"excerpt":{"rendered":"

                        The Shelly Pro 3EM-3CT63 is a single-phase or three-phase DIN-rail mountable energy meter that operates stand-alone on a local LAN or Wi-Fi network or connects to cloud automation platforms via Modbus, MQTT, HTTP or WebSocket with TLS encryption. It reports real-time data for each phase\/channel, including voltage, current, active and apparent power, and total energy consumption.<\/p>","protected":false},"featured_media":5231,"template":"","meta":{"_acf_changed":false},"product_brand":[97],"product_cat":[91,128],"product_tag":[],"class_list":["post-5229","product","type-product","status-publish","has-post-thumbnail","product_brand-shelly","product_cat-nadzor-porabe-energije","product_cat-wi-fi","first","instock","sale","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/product\/5229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/media\/5231"}],"wp:attachment":[{"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/media?parent=5229"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/product_brand?post=5229"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/product_cat?post=5229"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/iotronx.com\/en\/wp-json\/wp\/v2\/product_tag?post=5229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}