{"product_id":"shelly-pro-3em-120a-3-phase-smart-energy-meter-precise-monitoring","title":"Shelly Pro 3EM (120A) 3-Phase Smart Energy Meter - Precise Monitoring","description":"\u003cp\u003eIn this review the Shelly Pro 3EM (120A) is presented as a solution for homeowners, installers and small businesses that need precise three-phase energy monitoring without a central hub. The unit's single biggest advantage is its combination of accurate \u003cstrong\u003e1% active energy measurement\u003c\/strong\u003e across three phases with native Wi-Fi and LAN connectivity, making it straightforward to track consumption, generation from solar panels and two-way energy flow. For anyone wanting DIN-rail mounting and cloud or local access, this device simplifies data gathering and automation.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-phase metering:\u003c\/strong\u003e Measures each phase independently so users can spot imbalances and isolate high-usage circuits for cost control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh accuracy:\u003c\/strong\u003e 1% active energy accuracy delivers reliable readings for billing, efficiency checks and operational decisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-way consumption:\u003c\/strong\u003e Calculates produced and used energy on each phase, useful for \u003cstrong\u003esolar panels monitoring\u003c\/strong\u003e and energy-export situations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity options:\u003c\/strong\u003e Built-in Wi-Fi and LAN let you use cloud services or local networks for real-time data and automation integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth gateway:\u003c\/strong\u003e Expands local device connectivity for smart home setups and reduces the need for extra gateways.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-rail form factor:\u003c\/strong\u003e Compact, industrial-grade mounting fits electrical panels in homes, offices or light industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe Shelly Pro 3EM is aimed at electricians, savvy homeowners with solar arrays and small business operators who need per-phase energy visibility and reliable two-way measurement. It is especially relevant when remote monitoring, cloud access or integration with \u003cstrong\u003eShelly Smart Control\u003c\/strong\u003e app and voice assistants is desired.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who require integrated PV inverters with built-in metering or facilities needing ultra-high current CTs beyond the supplied 120A transformers; for very large industrial systems a different class of meter would be more appropriate.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAccurate 1% active energy readings across three phases for dependable monitoring.\u003c\/li\u003e\n\u003cli\u003eFlexible connectivity with Wi-Fi, LAN and Bluetooth gateway functions for local or cloud control.\u003c\/li\u003e\n\u003cli\u003eTwo-way consumption reporting makes it practical for solar generation and export tracking.\u003c\/li\u003e\n\u003cli\u003eDIN-rail mounting and included 120A CTs simplify panel installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied CTs are 120A, so installations with higher current requirements will need alternate transformers.\u003c\/li\u003e\n\u003cli\u003eAdvanced integration may require familiarity with network configuration or cloud setup for optimal use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eShelly Pro 3EM (120A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhases\u003c\/td\u003e\n\u003ctd\u003e3-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Transformers\u003c\/td\u003e\n\u003ctd\u003eThree 120A CTs included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eWi-Fi, LAN and Bluetooth gateway\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e1% active energy measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN-rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonitoring\u003c\/td\u003e\n\u003ctd\u003eTwo-way consumption (produced and used)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Shelly Pro 3EM (120A) is a strong choice for residential and light commercial three-phase monitoring because it pairs industrial-style DIN-rail mounting and accurate 1% measurement with versatile connectivity and solar-ready two-way reporting. It represents good value when you need reliable per-phase data and easy integration into smart home or cloud setups, provided your currents stay within the 120A CT limit.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan this meter monitor solar generation?\u003c\/strong\u003e\u003cbr\u003eYes. It supports two-way consumption so it can report produced and used energy for each phase, making it suitable for solar panel monitoring.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it need a hub to work with voice assistants?\u003c\/strong\u003e\u003cbr\u003eNo. The device has native Wi-Fi and works with the Shelly app and compatible voice assistants without a separate hub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre the included CTs sufficient for all installations?\u003c\/strong\u003e\u003cbr\u003eThe package includes three 120A CTs which cover most residential and small commercial installs; larger installations may require CTs with higher current ratings.\u003c\/p\u003e","brand":"Allterco Robotics EOOD","offers":[{"title":"Default Title","offer_id":48251144274139,"sku":"B0BVKZ4NGM","price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/81vNdeYbeTL._SL1500.jpg?v=1771103351","url":"https:\/\/gearmusthave.com\/products\/shelly-pro-3em-120a-3-phase-smart-energy-meter-precise-monitoring","provider":"GearMustHave","version":"1.0","type":"link"}