{"product_id":"rocker-switch-on-off-kcd4","title":"Rocker Switch ON-OFF 15A KCD4 4 Pin Power Control LED Ligtht FILN Factory","description":"\u003cdiv style=\"font-family: Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003e\n\u003cspan\u003eRocker Switch Drawing\u003c\/span\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/FL3-KCD4-010-21_Switch-Drawing.webp?v=1777278372\" alt=\"\"\u003e\u003cbr\u003e\u003cbr\u003eWhat is a Rocker Switch ON-OFF?\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eA \u003cstrong\u003erocker switch ON-OFF\u003c\/strong\u003e is an electromechanical component used to connect or disconnect an electrical circuit through a pivoting motion. The \u003cstrong\u003eFL3-KCD4-010-21\u003c\/strong\u003e is a standard rectangular KCD4 series switch designed for high-reliability power control in industrial and domestic environments. Featuring a \u003cstrong\u003e30X22MM mounting hole\u003c\/strong\u003e and \u003cstrong\u003e4-pin terminals\u003c\/strong\u003e, this switch provides a stable interface for managing currents up to \u003cstrong\u003e15A\u003c\/strong\u003e. Its primary function is to serve as a master power gate, ensuring safe operation of electrical equipment.\u003c\/p\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe FILN \u003cstrong\u003eKCD4 series rocker switch ON-OFF\u003c\/strong\u003e is engineered for versatility and durability. These \u003cstrong\u003e30X22MM rectangular switches\u003c\/strong\u003e are widely used in power strips, kitchen appliances, and industrial control panels. Our switches are manufactured under \u003cstrong\u003eISO9001\u003c\/strong\u003e standards and carry \u003cstrong\u003eCE, VDE, RoHS, SGS, and UL\u003c\/strong\u003e certifications. The 4-pin configuration allows for DPST (Double Pole Single Throw) control, enabling the switch to break both the hot and neutral lines simultaneously for enhanced safety. The illuminated versions feature high-brightness LEDs (Red, Green, Yellow, Blue, White) that provide clear status feedback in dark environments, while the classic black non-illuminated models offer a professional, universal look.\u003c\/p\u003e\n\u003cdiv style=\"border: 2px solid #28a745; padding: 15px; border-radius: 5px; text-align: center; margin: 20px 0;\"\u003e\u003ca href=\"https:\/\/www.cnfiln.com\/collections\/rocker-switch\" style=\"color: #28a745; font-weight: bold; text-decoration: none; font-size: 18px;\" target=\"_blank\"\u003e Explore Our Full Range of Rocker Switch Solutions → \u003c\/a\u003e\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eSwitch Function Logic Comparison\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eFunction Type\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eOperation Principle\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eState Logic\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cstrong\u003eON-OFF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eStandard Latching Power Control\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eStays in \"On\" or \"Off\" position manually.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cstrong\u003eON-ON\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eTwo-Way Selection Latching\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eSwitches between two active load circuits.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cstrong\u003e(ON)-OFF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eMomentary ON\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eReturns to \"Off\" when the button is released.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cstrong\u003eON-(OFF)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eMomentary OFF\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eNormally \"On\", breaks circuit only while pressed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cstrong\u003eON-(ON)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eLatching ON with Momentary Secondary\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eStays on position 1, springs back from position 2.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eQuick Specifications\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa; width: 50%;\"\u003eModel Series\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left; width: 50%;\"\u003eFL3-KCD4-010-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa;\"\u003eMounting Dimensions\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e30X22MM (Snap-in Type)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa;\"\u003eFunction\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e\u003cspan\u003eON-OFF \/ ON-ON \/ (ON)-OFF \/ ON-(OFF) \/ ON-(ON)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa;\"\u003eLED Light Colors\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eR\/G\/Y\/B\/W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa;\"\u003eActuator Material\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eHigh-grade Plastic Surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f8f9fa;\"\u003eTerminal Layout\u003c\/th\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e4-Pin Spade Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eElectrical Performance Parameters\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eMain Technology Performance\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eSpecification Value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eRated Voltage\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e15A 250VAC \/ 20A 125VAC (5-24V Support)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eInitial Contact Resistance\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e≤50mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eInsulated Resistance\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e≥100mΩ \/ 500VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e1500VAC \/ 5mA 60s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eEndurance (Life Cycle)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e10,000 Operations Minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eAmbient Temperature\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e-40°C to +125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eProtection Degree\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eIP40 (Indoor Use Only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eISO9001, CE, VDE, RoHS, SGS, UL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"text-align: center; margin-top: 10px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Product_Certification.webp?v=1774674312\" alt=\"FILN Rocker Switch Quality Certifications\" style=\"max-width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eComponent Materials\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eAccessories Name\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eMaterial Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eTransparent Sheet\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eHigh-clarity PC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eLight Guiding Part\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eOptical PC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eHousing Holder\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eFire-retardant ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eUp \/ Bottom Base\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003ePA66 + ABS Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003ePins \/ Terminals\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eH62 Brass (Silver Plated)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eContact Points\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eAgCdO12 (Silver Alloy)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eInternal Spring\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003e72# Manganese Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eLight Source\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eLow-Heat LED Lamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eGlobal Applications\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe \u003cstrong\u003erocker switch ON-OFF\u003c\/strong\u003e is a critical component for power management. It is widely utilized in \u003cstrong\u003ehousehold appliances\u003c\/strong\u003e like air fryers and water dispensers, \u003cstrong\u003eoffice equipment\u003c\/strong\u003e such as printers and power strips, and \u003cstrong\u003eindustrial controls\u003c\/strong\u003e where 15A current handling is mandatory.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Application-of-Rocker-Switches.webp?v=1777108480\" alt=\"Universal Applications of Rocker Switches\" style=\"max-width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eInstallation Guide (Snap-In Method)\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel Cut:\u003c\/strong\u003e Create a 30X22MM rectangular opening in your panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsertion:\u003c\/strong\u003e Align the switch and push it firmly from the front side into the hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-Lock:\u003c\/strong\u003e The integrated clips on both sides of the switch will snap into place, securing the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Connect your 4-pin female spade connectors to the terminals according to your circuit schematic.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Rocker-Switch-Installation-Steps.webp?v=177710907\" alt=\"KCD4 Rocker Switch Installation Steps\" style=\"max-width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-family: Arial, sans-serif;\"\u003eComplete Rocker Switch Wiring Diagram and Connection Guide\u003c\/h2\u003e\n\u003cp\u003eA \u003cstrong\u003e4 pin rocker switch wiring diagram\u003c\/strong\u003e is essential for managing higher-current loads or providing clear visual feedback in electrical systems. These switches are typically \u003cstrong\u003eDouble Pole Single Throw (DPST)\u003c\/strong\u003e or specialized single-pole configurations that allow the internal lamp to function independently or in synchronization with the connected device. Depending on your requirements, \u003cstrong\u003erocker switch wiring\u003c\/strong\u003e can be configured for either \"Independent Illumination\" (Always On) or \"Dependent Illumination\" (On when Device is Active).\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eOption 1: Light On When Device is Operating (Dependent Illumination)\u003c\/h3\u003e\n\u003cp\u003eThis configuration is ideal when you need a visual status indicator to show that the equipment is currently powered. In this mode, the internal LED only illuminates when the switch is toggled to the \"Press\" position.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Connection:\u003c\/strong\u003e Connect the positive (+) and negative (-) wires from the power source to the \u003cstrong\u003ebottom set of pins\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Connection:\u003c\/strong\u003e Connect the positive and negative terminals of your device to the \u003cstrong\u003etop set of pins\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic:\u003c\/strong\u003e When the switch is closed, current flows through the device and simultaneously completes the internal circuit for the LED lamp.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center; margin: 20px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/rocker_switch_wiring.webp?v=1777254975\" alt=\"4 Pin Rocker Switch Wiring Diagram - Dependent Illumination\" style=\"max-width: 100%; height: auto; border: 1px solid #eee; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.1);\"\u003e\n\u003cp style=\"color: #666; font-size: 0.85em; margin-top: 10px;\"\u003e\u003cem\u003eFigure 1: Wiring for LED illumination during device operation.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eOption 2: Switch Light Remains Constantly Lit (Independent Illumination)\u003c\/h3\u003e\n\u003cp\u003eThis setup is useful for locating the switch in dark environments (such as vehicle dashboards or industrial control panels). The internal LED remains on as long as the power source is connected, regardless of the device status.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Connection:\u003c\/strong\u003e Connect the power source positive (+) and negative (-) wires to the \u003cstrong\u003etop set of pins\u003c\/strong\u003e (where the internal lamp is internally bridged).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Connection:\u003c\/strong\u003e Connect the device terminals to the \u003cstrong\u003ebottom set of pins\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLogic:\u003c\/strong\u003e The LED is powered directly by the input line, while the rocker mechanism acts as a gatekeeper only for the current flowing to the device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center; margin: 20px 0;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/4_pin_rocker_switch_wiring_diagram.webp?v=1777255069\" alt=\"4 Pin Rocker Switch Wiring Diagram - Constant Illumination\" style=\"max-width: 100%; height: auto; border: 1px solid #eee; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.1);\"\u003e\n\u003cp style=\"color: #666; font-size: 0.85em; margin-top: 10px;\"\u003e\u003cem\u003eFigure 2: Wiring for constant LED illumination (Switch Finder Mode).\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eComparison of Operation Logic\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin: 20px 0;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; min-width: 450px; font-family: sans-serif; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f1f3f4; border-bottom: 2px solid #1a73e8;\"\u003e\n\u003cth style=\"padding: 15px; text-align: left; border: 1px solid #ddd;\"\u003eConfiguration Type\u003c\/th\u003e\n\u003cth style=\"padding: 15px; text-align: left; border: 1px solid #ddd;\"\u003eSwitch State\u003c\/th\u003e\n\u003cth style=\"padding: 15px; text-align: left; border: 1px solid #ddd;\"\u003eDevice Status\u003c\/th\u003e\n\u003cth style=\"padding: 15px; text-align: left; border: 1px solid #ddd;\"\u003eLED Status\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"2\" style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eDependent (Option 1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eNormal\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eOFF\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eOFF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003ePress\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eON\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fafafa;\"\u003e\n\u003ctd rowspan=\"2\" style=\"padding: 12px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eIndependent (Option 2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eNormal\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eOFF\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003ePress\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eON\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #ddd;\"\u003eON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical Considerations \u0026amp; Safety Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Orientation:\u003c\/strong\u003e 4-pin rocker switches usually have two parallel circuits. Ensure you are wiring the positive and negative on the correct pairs to avoid a short circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Matching:\u003c\/strong\u003e Check if the internal lamp is designed for 12V DC or 110V\/220V AC. Using an AC lamp on a DC circuit will result in no light, while the reverse may cause the lamp to explode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Ratings:\u003c\/strong\u003e Most 4-pin industrial switches (like the KCD4 series) support up to 15A-30A. Verify that your total load does not exceed the manufacturer's specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination:\u003c\/strong\u003e Use high-quality 6.3mm female spade connectors. Ensure they are fully insulated to prevent accidental contact between adjacent terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eHow Rocker Switch Works?\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe mechanical principle of a \u003cstrong\u003erocker switch ON-OFF\u003c\/strong\u003e involves a seesaw-like actuator. When one side is pressed, an internal bridge tilts to make contact with stationary terminals, completing the circuit. FILN's \u003cstrong\u003e15A high-current\u003c\/strong\u003e design uses silver alloy contact points to prevent carbon buildup and \"arcing,\" ensuring a lifespan of over 10,000 cycles. This split-body design is optimized for heat management in high-load scenarios, though it is intended for indoor use as it lacks an external waterproof seal.\u003c\/p\u003e\n\u003cdiv style=\"background-color: #f1f3f4; padding: 30px; border-radius: 8px; margin-top: 40px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eFILN Factory Direct Supply\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cul style=\"list-style-type: none; padding: 0;\"\u003e\n\u003cli\u003e✅ \u003cstrong\u003eNo MOQ:\u003c\/strong\u003e Direct procurement for any project size.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFast Delivery:\u003c\/strong\u003e Global logistics from our ISO-certified facility.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eCustomization:\u003c\/strong\u003e Wire length, connector type, and voltage (5V-220V) tailoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 20px;\"\u003e\u003ca href=\"mailto:inquiry@cnylin.com.cn\" style=\"background-color: #1a73e8; color: white; padding: 12px 24px; text-decoration: none; border-radius: 4px; display: inline-block;\"\u003eRequest Free Samples\u003c\/a\u003e\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003eOfficial Website:\u003c\/strong\u003e \u003ca href=\"http:\/\/www.filn.com\" style=\"color: #1a73e8;\" target=\"_blank\"\u003ewww.filn.com\u003c\/a\u003e\u003cbr\u003e\u003cstrong\u003eEngineering Support:\u003c\/strong\u003e \u003ca href=\"mailto:inquiry@cnylin.com.cn\" style=\"color: #1a73e8;\"\u003einquiry@cnylin.com.cn\u003c\/a\u003e\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/About_FILN.webp?v=1774851338\" alt=\"FILN Manufacturing Plant\" style=\"max-width: 100%; height: auto; margin-top: 15px; border-radius: 4px;\"\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px;\"\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 20px;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #fff; border: 1px solid #ddd; padding: 20px;\"\u003e\n\u003cp\u003e\u003cstrong\u003e1. What is the standard mounting size for the KCD4 4-pin rocker switch?\u003c\/strong\u003e\u003cbr\u003eThe industry-standard mounting size for this rectangular rocker switch is 30X22MM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Can I use this 4-pin switch for 12V DC and 220V AC?\u003c\/strong\u003e\u003cbr\u003eYes, the switch can handle both. However, the internal LED voltage must be specified (e.g., 12V or 220V) for the light to work correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Is this 15A rocker switch waterproof?\u003c\/strong\u003e\u003cbr\u003eNo, the standard FL3-KCD4-010-21 is designed for indoor use. For outdoor applications, a dedicated waterproof cover is required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. How many terminals does an illuminated KCD4 switch have?\u003c\/strong\u003e\u003cbr\u003eThis specific model features a 4-pin terminal layout, allowing for double pole control with integrated lighting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. What is the difference between ON-OFF and (ON)-OFF?\u003c\/strong\u003e\u003cbr\u003eON-OFF is latching (stays in position), whereas (ON)-OFF is momentary (springs back to the OFF position when released).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Does the light stay on when the switch is OFF?\u003c\/strong\u003e\u003cbr\u003eIn a \"Dependent\" wiring setup, the light only turns on when the switch is set to ON. It can be wired as \"Independent\" to stay on constantly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. What current can this 30X22MM switch handle?\u003c\/strong\u003e\u003cbr\u003eIt is rated for a high current capacity of 15A 250VAC or 20A 125VAC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. Are different LED colors available for the 4-pin switch?\u003c\/strong\u003e\u003cbr\u003eYes, we offer Red, Green, Yellow, Blue, and White LED options, as well as non-lighted black actuators.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9. How do the side clips work for installation?\u003c\/strong\u003e\u003cbr\u003eThe snap-in design features plastic wings that compress during insertion and expand once through the panel to lock the switch in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10. Does FILN provide certifications for international markets?\u003c\/strong\u003e\u003cbr\u003eYes, we provide full CE, UL, RoHS, and VDE certification documents to support global compliance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"KCD4 Rocker Switch","offers":[{"title":"ON-OFF \/ Red \/ 5-24V","offer_id":39612769108030,"sku":"FL3-KCD4-010-21-1-R-524V","price":1.3,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Red \/ 110-220V","offer_id":39612769140798,"sku":"FL3-KCD4-010-21-1-R-110220V","price":1.3,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Red \/ Customization (please note)","offer_id":39612769173566,"sku":"FL3-KCD4-010-21-1-R-C","price":1.3,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Green \/ 5-24V","offer_id":39612769501246,"sku":"FL3-KCD4-010-21-1-G-524V","price":1.3,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Green \/ 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