{"product_id":"shelly-120a-current-transformer-clamp-for-energy-monitoring","title":"Shelly 120A Current Transformer Clamp for Energy Monitoring","description":"\u003cdiv\u003e\n\u003ch1\u003eShelly 120A Current Transformer Clamp for Energy Monitoring\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eShelly 120A Current Transformer Clamp\u003c\/strong\u003e is a precision split-core current transformer designed to work with compatible Shelly energy monitoring devices such as the Shelly EM. \u003ccite index=\"21-1\"\u003eThis clamp delivers \u003cstrong\u003e1% accuracy\u003c\/strong\u003e\u003c\/cite\u003e and allows you to \u003ccite index=\"17-1\"\u003emeasure electrical currents up to 120 amps from a live cable\u003c\/cite\u003e without the need to disconnect or cut wires. Perfect for monitoring whole-home electrical loads, high-capacity circuits, and large appliances in residential, commercial, or industrial environments.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Shelly 120A CT Clamp?\u003c\/h2\u003e\n\u003cp\u003eThis current transformer clamp offers contactless, non-invasive current measurement for seamless integration with your Shelly smart home energy monitoring ecosystem. \u003ccite index=\"16-4,16-5\"\u003eThe clamp is designed to accurately measure high-current loads by converting them into lower, standardised values for energy monitoring, ensuring reliable current sensing without interfering with the primary circuit.\u003c\/cite\u003e\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Current Capacity\u003c\/strong\u003e: Measures alternating current (AC) up to 120 amperes for heavy-duty applications\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"21-1\"\u003e\u003cstrong\u003e1% Accuracy\u003c\/strong\u003e: Precision measurement for reliable energy monitoring\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"24-1\"\u003e\u003cstrong\u003e16mm Internal Diameter\u003c\/strong\u003e: Clamps around standard residential and commercial cables\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"11-2,16-2\"\u003e\u003cstrong\u003e60 cm Cable Length\u003c\/strong\u003e: Provides flexible installation options\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSplit-Core Design\u003c\/strong\u003e: Easy installation without disconnecting wires\u003c\/li\u003e\n\u003cli\u003e\u003ccite index=\"24-1\"\u003e\u003cstrong\u003eFerrite Core Construction\u003c\/strong\u003e: Durable and reliable performance\u003c\/cite\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with Shelly EM\u003c\/strong\u003e: Seamlessly integrates with Shelly energy meters for real-time monitoring via the Shelly app\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003e\u003ccite index=\"12-4,12-5\"\u003eCurrent transformers scale the large values of current to small, standardised values for measuring purposes, providing a secondary current that is accurately proportional to the current flowing in its primary circuit.\u003c\/cite\u003e \u003ccite index=\"17-3\"\u003eThe clamp fits around the live cable without the need to cut or disconnect the wire, unlike a traditional inline ammeter.\u003c\/cite\u003e The 60 cm cable connects directly to your Shelly EM or compatible energy monitoring device, allowing you to track energy consumption, monitor circuit performance, and optimise electrical usage from anywhere using the Shelly Cloud app.\u003c\/p\u003e\n\n\u003ch2\u003ePerfect For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWhole-home energy monitoring\u003c\/li\u003e\n\u003cli\u003eSolar panel system monitoring\u003c\/li\u003e\n\u003cli\u003eCommercial and industrial electrical installations\u003c\/li\u003e\n\u003cli\u003eHigh-capacity appliance monitoring (air conditioners, heat pumps, electric vehicle chargers)\u003c\/li\u003e\n\u003cli\u003eElectrical circuit analysis and load balancing\u003c\/li\u003e\n\u003cli\u003ePrepaid energy management and consumption tracking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible with:\u003c\/strong\u003e Shelly EM, Shelly Pro 3EM-120A, Shelly EM Gen4\u003c\/p\u003e\n\u003cp\u003e\u003ccite index=\"11-3,16-7\"\u003e\u003cstrong\u003eNOT compatible with:\u003c\/strong\u003e Shelly Pro EM-50, Shelly Pro 3EM, Shelly EM Gen3, Shelly EM Gen4, Shelly Pro 3EM-3CT63\u003c\/cite\u003e\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Made Easy\u003c\/h2\u003e\n\u003cp\u003eThe split-core design allows the clamp to open and close around existing cables, making installation quick and straightforward. The 60 cm cable provides flexibility for mounting in electrical panels, meter boxes, and distribution boards. For optimal accuracy and performance, \u003ccite index=\"20-11\"\u003eit's best to keep the cables at their original length\u003c\/cite\u003e without extension.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Shelly 120A Current Transformer Clamp (with 60 cm cable)\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFull Specifications\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Primary Current\u003c\/td\u003e\n\u003ctd\u003e120A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Secondary Current\u003c\/td\u003e\n\u003ctd\u003e40mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaturation Current\u003c\/td\u003e\n\u003ctd\u003e≥ 120A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCore Type\u003c\/td\u003e\n\u003ctd\u003eFerrite core\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Diameter (Aperture)\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e60 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Resistance\u003c\/td\u003e\n\u003ctd\u003e20Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Strength\u003c\/td\u003e\n\u003ctd\u003e3000 VAC at 1 mA 60s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamp Type\u003c\/td\u003e\n\u003ctd\u003eSplit-core current transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eShelly EM, Shelly Pro 3EM-120A, Shelly EM Gen4\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\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e All electrical installation work must be performed by a qualified and licensed electrician to ensure safety and compliance with local electrical codes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Shelly","offers":[{"title":"Default Title","offer_id":44390037192782,"sku":"PA-SHELLY120ACT","price":69.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/3134\/9838\/files\/12A.jpg?v=1790322703","url":"https:\/\/projectorsaustralia.com.au\/products\/shelly-120a-current-transformer-clamp-for-energy-monitoring","provider":"Projectors Australia","version":"1.0","type":"link"}