{"product_id":"12v-dc-power-terminal-block-connector-plug-adapter-tv-cctv-led-strip-smd-wire","title":"12V DC Power Terminal Block Connector – Plug Adapter for TV, CCTV Camera, LED Strip \u0026 SMD Wire Connection, 4\/10\/40pcs","description":"\u003ch2\u003e12V DC Power Terminal Block Connector – Plug Adapter for TV, CCTV Camera, LED Strip \u0026amp; SMD Wire Connection\u003c\/h2\u003e\n\n\u003cp\u003eDC power terminal block connectors combining a standard 5.5×2.1mm DC barrel jack (or plug) with a screw clamp terminal block — allowing bare wire to be connected to DC-powered equipment without soldering. The screw clamp accepts stripped wire directly; tighten the screw to secure. Used for connecting bare wire power supplies to CCTV cameras, LED strip lights, and other 12V DC equipment that uses standard 5.5×2.1mm DC barrel connectors.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDC Connector:\u003c\/strong\u003e 5.5mm OD \/ 2.1mm ID barrel (standard 12V DC size)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfigurations:\u003c\/strong\u003e Female jack + terminal block (for connecting to equipment with male DC plug); Male plug + terminal block (for connecting to equipment with female DC jack)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 12–24V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 3–5A (depending on terminal block design)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Entry:\u003c\/strong\u003e Screw clamp, accepts 20–16AWG (0.5–1.5mm²)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 4, 10, or 40 pieces (select above)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e5.5×2.1mm vs 5.5×2.5mm DC Barrel Connectors\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5.5×2.1mm (this product):\u003c\/strong\u003e The most common DC barrel connector size for 12V equipment. Used by: most CCTV cameras, LED drivers, Arduino power supplies, and generic 12V adapters. The 2.1mm center pin is the standard for most consumer and industrial 12V equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5.5×2.5mm:\u003c\/strong\u003e Slightly larger center pin (2.5mm). Used by some laptop power supplies, higher-current 12V equipment, and some industrial power supplies. A 2.1mm plug will fit loosely in a 2.5mm jack and may cause intermittent connection — always verify the center pin size before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerification:\u003c\/strong\u003e Measure the center pin OD with a caliper, or check the equipment’s power supply specifications. Most CCTV and LED equipment uses 2.1mm; most laptop-style power supplies use 2.5mm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eHow do I wire a DC terminal block connector?\u003c\/h4\u003e\n\u003cp\u003eThe terminal block has two screw terminals: positive (+) and negative (-). Strip the wire 8–10mm. Insert the positive wire into the + terminal and tighten the screw. Insert the negative wire into the - terminal and tighten. Polarity convention: center pin = positive (+), outer barrel = negative (-) for most 12V equipment. Always verify the polarity of your specific equipment before connecting — reverse polarity can damage DC equipment.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the maximum current for these connectors?\u003c\/h4\u003e\n\u003cp\u003e3–5A depending on the terminal block design. For a 12V system: 5A × 12V = 60W maximum. For LED strip lights: a 60W LED strip draws 5A at 12V — at the limit of this connector. For higher-power LED installations (above 60W at 12V), use a dedicated screw terminal power distribution block and connect the LED strips directly, bypassing the DC barrel connector.\u003c\/p\u003e\n\n\u003ch4\u003eCan I use these connectors for CCTV camera power?\u003c\/h4\u003e\n\u003cp\u003eYes. CCTV cameras typically draw 0.5–1.5A at 12V — well within the 3–5A rating. These connectors are the standard method for connecting bare wire power runs to CCTV cameras in installations where the power supply cable is run without a pre-terminated DC plug. Connect the positive wire to the + terminal and the negative wire to the - terminal, then plug the female jack into the camera’s DC power input.\u003c\/p\u003e\n\n\u003ch4\u003eWhat wire gauge should I use for 12V CCTV and LED power runs?\u003c\/h4\u003e\n\u003cp\u003eFor CCTV cameras (0.5–1.5A): 18–20AWG (0.5–0.75mm²) for runs up to 30m. For LED strips (up to 5A): 16–18AWG (0.75–1.5mm²) for runs up to 10m; 14AWG (2.5mm²) for longer runs. Voltage drop is the limiting factor for 12V DC runs — keep voltage drop below 0.5V (4% of 12V) for reliable equipment operation.\u003c\/p\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCCTV:\u003c\/strong\u003e Connecting bare wire power runs to CCTV camera DC power inputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED strip lighting:\u003c\/strong\u003e Connecting bare wire power supplies to LED strip DC inputs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino \u0026amp; electronics:\u003c\/strong\u003e Connecting bare wire power to Arduino and microcontroller DC power jacks\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12V accessories:\u003c\/strong\u003e Connecting bare wire to any 12V equipment with a 5.5×2.1mm DC barrel connector\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY electronics:\u003c\/strong\u003e Creating custom DC power connections without soldering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cp\u003e4, 10, or 40 pieces (select above) — DC power terminal block connectors (male or female, as selected).\u003c\/p\u003e","brand":"Cable Parts Online","offers":[{"title":"JT1265 \/ 4 PCS","offer_id":47850600595701,"sku":"14:200004889#JT1265;200497261:203372044#4 PCS","price":12.6,"currency_code":"USD","in_stock":true},{"title":"JT1265 \/ 10 PCS","offer_id":47850600530165,"sku":"14:200004889#JT1265;200497261:200000932#10 PCS","price":16.7,"currency_code":"USD","in_stock":true},{"title":"JT1265 \/ 40 PCS","offer_id":47850600562933,"sku":"14:200004889#JT1265;200497261:200025004#40 PCS","price":39.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3494\/0149\/files\/S66067a9f06af436e946aa7405f5d52daV.webp?v=1773899372","url":"https:\/\/www.csldmcml.com\/products\/12v-dc-power-terminal-block-connector-plug-adapter-tv-cctv-led-strip-smd-wire","provider":"Cable Parts Online","version":"1.0","type":"link"}