{"product_id":"pzkhct-split-core-current-transformer-100a-coil-sensor-energy-meter","title":"PZKHCT Split Core Current Transformer 100A Coil Sensor","description":"\n\u003ch2\u003ePZKHCT Split Core Current Transformer – 100A Coil Sensor for Energy Meters\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003ePZKHCT Split Base Current Transformer\u003c\/strong\u003e is a compact, fully enclosed coil sensor designed for accurate current measurement up to 100A. Engineered for energy meters operating on AC 220V or 380V power supplies, this mini split-core CT sensor offers outstanding mechanical durability, strong voltage isolation, and effortless clamp-on installation — no need to cut power or interrupt your circuit during setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMini Split-Core Design:\u003c\/strong\u003e One of the smallest split-base current transformers of its class (100mA output), ideal for tight installations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSnap-Joint Structure:\u003c\/strong\u003e Clamps directly onto existing cables using nylon ties — no wire cutting or power shutdown required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e16mm Inner Hole Diameter:\u003c\/strong\u003e Accommodates a wide range of cable sizes with ease.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Accuracy:\u003c\/strong\u003e ≤0.5 grade accuracy ensures reliable current measurement for energy metering applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Enclosed Housing:\u003c\/strong\u003e Excellent mechanical properties, environmental resistance, and strong voltage isolation for safe, dependable operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e Operates from -40°C to +85°C, suitable for demanding environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUL94-V0 Flame Resistance:\u003c\/strong\u003e Built to meet international flame-retardant standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Input Coil:\u003c\/strong\u003e Lightweight and easy to install without specialized tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\"\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003ePZKHCT\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eMeasuring Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e0–100A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e100mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInner Hole Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eAccuracy Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e≤0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWorking Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e50Hz–60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInsulation Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u0026gt;1000MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDielectric Strength\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e1000V \/ 1 min (power frequency)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInsulation Endurance Grade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eB Grade (130°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eInternal Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e10Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e≤90% (at 40°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTemperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFlame Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eUL94-V0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e59g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eApplicable Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 6px; border: 1px solid #ddd;\"\u003eAC 220V \/ 380V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Installation Notes\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eConnect the CT primary in \u003cstrong\u003eseries\u003c\/strong\u003e with the test current loop; the secondary must operate in short-circuit state.\u003c\/li\u003e\n  \u003cli\u003eThe secondary circuit must \u003cstrong\u003enever\u003c\/strong\u003e be left open — do not install a fuse on this side.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNever open-circuit the secondary side.\u003c\/strong\u003e Always connect wiring to the secondary side first, then the primary. When removing, disconnect the primary side first, then the secondary.\u003c\/li\u003e\n  \u003cli\u003eEnsure wire diameter matches hole diameter; select a specification with an inner hole diameter larger than your wire diameter. Fully fasten the opening\/closing surfaces until you hear a clear \"click\" — the latch must be completely locked.\u003c\/li\u003e\n  \u003cli\u003eThis transformer measures \u003cstrong\u003ealternating current only\u003c\/strong\u003e (50\/60Hz).\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × PZKHCT Split Core Current Transformer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLooking for other precision tools and accessories? You may also be interested in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/792leds-510k-l7-large-red-light-therapy-led-panel-infrared-light-pad-human-pet-full-body-use-massage-relaxation-660nm-850nm\"\u003e792LEDs L7 Large LED Panel – Full Body Infrared Light\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bincoo-3-valve-316-stainless-steel-moka-pot-single-dual-valve-option-home-outdoor-espresso-coffee-maker\"\u003eBincoo 3-Valve 316 Stainless Steel Moka Pot\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is a split-core current transformer and how does the PZKHCT work?\u003c\/h4\u003e\n\u003cp\u003eA: A split-core current transformer (CT) clamps around an existing cable without cutting or disconnecting it. The PZKHCT uses a snap-joint mechanism: open the clamp, place it around the cable, and close until you hear a click. It then measures the alternating current flowing through the cable (up to 100A) and outputs a proportional 100mA signal, which is fed into your energy meter for accurate power monitoring.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I install this current transformer without turning off the power?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — one of the key advantages of the PZKHCT split-core design is that it installs directly onto the live cable without the need to cut power or interrupt your circuit. Simply snap it around the conductor and secure it with a nylon tie. Always follow the wiring sequence instructions: connect the secondary side first, then the primary, for safe installation.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this transformer compatible with both 220V and 380V systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The PZKHCT is designed for use with energy meters on both AC 220V and AC 380V power supply systems, operating at frequencies of 50Hz or 60Hz, making it suitable for a wide range of residential and commercial applications.\u003c\/p\u003e\n\u003ch4\u003eQ: What cable size can fit through the 16mm inner hole?\u003c\/h4\u003e\n\u003cp\u003eA: The inner hole diameter is 16mm, accommodating most standard cables used in residential and light commercial wiring. Always verify that the outer diameter of your cable is smaller than 16mm before installation, and ensure the latch locks fully with an audible click for a secure fit and accurate reading.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is a split-core current transformer and how does the PZKHCT work?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"A split-core current transformer (CT) clamps around an existing cable without cutting or disconnecting it. The PZKHCT uses a snap-joint mechanism: open the clamp, place it around the cable, and close until you hear a click. It then measures the alternating current flowing through the cable (up to 100A) and outputs a proportional 100mA signal, which is fed into your energy meter for accurate power monitoring.\"}}, {\"@type\": \"Question\", \"name\": \"Can I install this current transformer without turning off the power?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — one of the key advantages of the PZKHCT split-core design is that it installs directly onto the live cable without the need to cut power or interrupt your circuit. Simply snap it around the conductor and secure it with a nylon tie. Always follow the wiring sequence instructions: connect the secondary side first, then the primary, for safe installation.\"}}, {\"@type\": \"Question\", \"name\": \"Is this transformer compatible with both 220V and 380V systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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Always verify that the outer diameter of your cable is smaller than 16mm before installation, and ensure the latch locks fully with an audible click for a secure fit and accurate reading.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"PZKHCT Split Core Current Transformer 100A Coil Sensor\", \"item\": \"https:\/\/ehgwsn-rz.myshopify.com\/products\/pzkhct-split-core-current-transformer-100a-coil-sensor-energy-meter\"}]}\u003c\/script\u003e","brand":"Qst","offers":[{"title":"black","offer_id":52268925419736,"sku":"14:193","price":27.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0834\/7146\/6712\/files\/S2e3013a0a9804998a057a6018d86a00cU.webp?v=1787113738","url":"https:\/\/qstboost.com\/products\/pzkhct-split-core-current-transformer-100a-coil-sensor-energy-meter","provider":"Qst","version":"1.0","type":"link"}