{"product_id":"shelly-pro-3em-400a-3-phase-din-rail-energy-meter-3x-400a-cts","title":"Shelly Pro 3EM 400A — 3-Phase DIN-Rail Energy Meter (3x 400A CTs)","description":"\u003cstyle\u003e.pd *{box-sizing:border-box}.pd{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;color:#1a1a2e;line-height:1.65;max-width:820px}.pd h1,.pd h2,.pd h4{line-height:1.3;margin-top:0}.pd h1{font-size:26px;font-weight:800;margin-bottom:6px}.pd h2{font-size:22px;font-weight:800;margin-bottom:8px;padding-top:32px;border-top:2px solid #f0f0f0}.pd h2:first-of-type{border-top:none;padding-top:0}.pd p{margin:0 0 12px;font-size:15px;color:#444}.pd ul{margin:0 0 16px;padding-left:0;list-style:none}.pd ul li{padding:5px 0 5px 24px;position:relative;font-size:14px;color:#444}.pd ul li::before{content:'✓';position:absolute;left:0;color:#059669;font-weight:700}.pd-trust{display:flex;gap:12px;margin:16px 0 24px;flex-wrap:wrap}.pd-trust-item{flex:1;min-width:130px;background:#f8f9fa;border-radius:10px;padding:14px 12px;text-align:center}.pd-trust-item .ico{font-size:22px;margin-bottom:3px}.pd-trust-item .lbl{font-size:12px;font-weight:700;color:#1a1a2e;text-transform:uppercase;letter-spacing:.3px}.pd-trust-item .sub{font-size:11px;color:#888}.pd-tip{background:#ecfdf5;border-left:4px solid #059669;border-radius:0 8px 8px 0;padding:12px 16px;margin:14px 0;font-size:13px;color:#065f46}.pd-warn{background:#fffbeb;border-left:4px solid #d97706;border-radius:0 8px 8px 0;padding:12px 16px;margin:14px 0;font-size:13px;color:#92400e}.pd-specs{width:100%;border-collapse:collapse;margin:14px 0;font-size:14px}.pd-specs tr:nth-child(even){background:#f8f9fa}.pd-specs td{padding:11px 16px;border-bottom:1px solid #f0f0f0}.pd-specs td:first-child{font-weight:700;color:#1a1a2e;width:42%}.pd-specs td:last-child{color:#555}.pd-faq{margin:10px 0}.pd-faq details{background:#fff;border:1px solid #e5e7eb;border-radius:8px;margin-bottom:8px;overflow:hidden}.pd-faq summary{padding:14px 18px;font-weight:700;font-size:14px;color:#1a1a2e;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}.pd-faq summary::-webkit-details-marker{display:none}.pd-faq summary::after{content:'▼';font-size:12px;color:#999;transition:transform .2s}.pd-faq details[open] summary::after{transform:rotate(180deg)}.pd-faq details[open] summary{border-bottom:1px solid #f0f0f0}.pd-faq .faq-body{padding:14px 18px;font-size:14px;color:#555;line-height:1.65}.pd-support{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:14px 0}@media(max-width:600px){.pd-support{grid-template-columns:1fr}}.pd-support-card{background:#f8f9fa;border-radius:10px;padding:20px 16px;text-align:center}.pd-support-card .si{font-size:28px;margin-bottom:6px}.pd-support-card h4{font-size:15px;font-weight:700;color:#1a1a2e;margin:0 0 6px}.pd-support-card p{font-size:13px;color:#555;margin:0;line-height:1.5}.pd-support-card a{color:#1e40af;font-weight:600;text-decoration:none}.pd-cta{background:#1a1a2e;border-radius:12px;padding:32px 24px;text-align:center;color:#fff;margin:24px 0}.pd-cta h3{font-size:22px;font-weight:800;margin:0 0 6px;color:#fff}.pd-cta p{font-size:14px;opacity:.7;margin:0 0 4px;color:#fff}\u003c\/style\u003e\n\u003cdiv class=\"pd\"\u003e\n\u003ch1\u003e⚡ Shelly Pro 3EM 400A — 3-Phase DIN-Rail Energy Meter (3x 400A CTs)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eheavy-duty version of the Pro 3EM\u003c\/strong\u003e — a professional 3-phase energy meter that measures up to \u003cstrong\u003e400A per phase\u003c\/strong\u003e with \u003cstrong\u003e1% accuracy\u003c\/strong\u003e. Built for \u003cstrong\u003ecommercial and industrial installations\u003c\/strong\u003e: factories, office blocks, shopping centres, body corporates and large solar plants. WiFi, LAN and Bluetooth connectivity with no hub required.\u003c\/p\u003e\n\n\u003cdiv class=\"pd-trust\"\u003e\n\u003cdiv class=\"pd-trust-item\"\u003e\n\u003cdiv class=\"ico\"\u003e🚚\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eFree Delivery\u003c\/div\u003e\n\u003cdiv class=\"sub\"\u003eOrders over R2,500\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pd-trust-item\"\u003e\n\u003cdiv class=\"ico\"\u003e🇿🇦\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eLocal Stock\u003c\/div\u003e\n\u003cdiv class=\"sub\"\u003eShips from Gauteng\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pd-trust-item\"\u003e\n\u003cdiv class=\"ico\"\u003e🏭\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003e400A\/Phase\u003c\/div\u003e\n\u003cdiv class=\"sub\"\u003eIndustrial grade\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pd-trust-item\"\u003e\n\u003cdiv class=\"ico\"\u003e🔧\u003c\/div\u003e\n\u003cdiv class=\"lbl\"\u003eDIN Rail\u003c\/div\u003e\n\u003cdiv class=\"sub\"\u003ePro series\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e⚡ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 400A Per Phase\u003c\/strong\u003e — sized for commercial mains, industrial feeders and large solar\/inverter installations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3x 400A CT Clamps Included\u003c\/strong\u003e — clip-on current transformers install without breaking the circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1% Accuracy (Class B)\u003c\/strong\u003e — dependable for tenant billing, cost allocation and energy audits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBi-Directional Metering\u003c\/strong\u003e — tracks both consumed and produced energy per phase for grid-tied solar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiFi + LAN + Bluetooth\u003c\/strong\u003e — wired Ethernet for reliable connectivity in plant rooms and DB boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60 Days On-Device History\u003c\/strong\u003e — 1-minute interval data held in non-volatile memory through outages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModbus Support\u003c\/strong\u003e — drops into building management systems and inverter monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emTLS Security\u003c\/strong\u003e — secure MQTT, HTTP and WebSocket connections for commercial networks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo Hub Required\u003c\/strong\u003e — Shelly app, Home Assistant, MQTT and scripting out of the box\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"pd-tip\"\u003e\n\u003cstrong\u003e🇿🇦 Commercial Tip:\u003c\/strong\u003e Body corporates and landlords use the Pro 3EM 400A on the main incomer to verify municipal bills and detect abnormal overnight loads. Pair with 120A units on sub-boards for a full per-tenant energy picture — all visible in one Shelly or Home Assistant dashboard.\u003c\/div\u003e\n\n\u003ch2\u003e📋 Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"pd-specs\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eShelly Pro 3EM — 400A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhases\u003c\/td\u003e\n\u003ctd\u003e3 + Neutral monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Range\u003c\/td\u003e\n\u003ctd\u003e0 – 400A per phase (via included CTs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e100 – 260V RMS per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy (Active Energy)\u003c\/td\u003e\n\u003ctd\u003e1% (Class B)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetering\u003c\/td\u003e\n\u003ctd\u003eBi-directional (consumed + produced)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eWiFi 2.4GHz · LAN (Ethernet) · Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols\u003c\/td\u003e\n\u003ctd\u003eMQTT, HTTP, Webhooks, Modbus, Shelly Scripting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Storage\u003c\/td\u003e\n\u003ctd\u003e60 days at 1-minute intervals (non-volatile)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail (distribution board)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIn the Box\u003c\/td\u003e\n\u003ctd\u003e1x Shelly Pro 3EM 400A, 3x 400A CT clamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cdiv class=\"pd-warn\"\u003e\n\u003cstrong\u003e⚠️ DB Board Installation:\u003c\/strong\u003e This device is installed in your distribution board and wired to mains voltage. Installation must be done by a qualified electrician in accordance with SANS 10142.\u003c\/div\u003e\n\n\u003ch2\u003e❓ Frequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"pd-faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eDo I need the 400A or the 120A version?\u003c\/summary\u003e\u003cdiv class=\"faq-body\"\u003eCheck your main breaker: supplies up to 100A (typical homes and small business) are well served by the \u003cstrong\u003e120A version\u003c\/strong\u003e. Choose the \u003cstrong\u003e400A version\u003c\/strong\u003e for commercial\/industrial incomers above 120A.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes it work with Home Assistant?\u003c\/summary\u003e\u003cdiv class=\"faq-body\"\u003e\n\u003cstrong\u003eNatively.\u003c\/strong\u003e Per-phase power, current, voltage and energy sensors feed straight into the Home Assistant Energy Dashboard. Modbus and MQTT are available for BMS integration.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it measure solar export?\u003c\/summary\u003e\u003cdiv class=\"faq-body\"\u003eYes — metering is bi-directional on each phase, so grid import and export are tracked separately. Ideal for commercial grid-tie installations and SSEG reporting.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003e🤝 Need Help? We're Here for You!\u003c\/h2\u003e\n\u003cdiv class=\"pd-support\"\u003e\n\u003cdiv class=\"pd-support-card\"\u003e\n\u003cdiv class=\"si\"\u003e📞\u003c\/div\u003e\n\u003ch4\u003eCall Us\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"tel:0716788719\"\u003eJesse: 071 678 8719\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"tel:0845057481\"\u003eJason: 084 505 7481\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pd-support-card\"\u003e\n\u003cdiv class=\"si\"\u003e🏢\u003c\/div\u003e\n\u003ch4\u003eVisit Us\u003c\/h4\u003e\n\u003cp\u003e8 Wildebraam Street\u003cbr\u003eWeltevreden Park, Roodepoort\u003cbr\u003eGauteng, 1709\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pd-support-card\"\u003e\n\u003cdiv class=\"si\"\u003e📧\u003c\/div\u003e\n\u003ch4\u003eEmail\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"mailto:info@eiferer.co.za\"\u003einfo@eiferer.co.za\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"pd-cta\"\u003e\n\u003ch3\u003eIndustrial-Grade Energy Insight.\u003c\/h3\u003e\n\u003cp\u003eShelly Pro 3EM 400A — 3-phase metering up to 400A\/phase · WiFi\/LAN\/BT · 3x CT clamps included\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Shelly","offers":[{"title":"Default Title","offer_id":50697793765569,"sku":null,"price":5999.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0022\/3418\/7820\/files\/ShellyPro3EM400A_1.jpg?v=1791463031","url":"https:\/\/eiferer.co.za\/products\/shelly-pro-3em-400a-3-phase-din-rail-energy-meter-3x-400a-cts","provider":"Eiferer_ZA","version":"1.0","type":"link"}