{"product_id":"transparent-12v-rocker-switches","title":"12V Rocker Switches Transparent Plastic KCD4 Waterproof Rocker Switch 30x22mm 4-Pin DPST FILN","description":"\u003cdiv style=\"font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; line-height: 1.6; color: #333; max-width: 1000px; margin: 0 auto; padding: 10px;\"\u003e\n\u003cdiv style=\"margin-top: 20px; margin-bottom: 40px;\"\u003e\n\u003cdiv style=\"border-bottom: 2px solid #1a73e8; margin-bottom: 15px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; margin: 0; padding-bottom: 5px;\"\u003eRocker Switch Drawing\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg style=\"max-width: 100%; height: auto; border-radius: 4px;\" alt=\"Rocker Switch Drawing\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Frameless_4-Pin_Waterproof_Rocker_Switch_Drawing.webp?v=1777360329\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 40px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eWhat is 12V Rocker Switches?\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003e\u003cstrong\u003e12V rocker switches\u003c\/strong\u003e are pivotal electrical components used to manually bridge or interrupt power within a circuit. The \u003cstrong\u003eFL3-KCD4-0111-21\u003c\/strong\u003e model is an industrial-standard \u003cstrong\u003eKCD4 series\u003c\/strong\u003e device featuring a \u003cstrong\u003etransparent ordinary plastic surface\u003c\/strong\u003e. Engineered for a \u003cstrong\u003e30x22mm\u003c\/strong\u003e rectangular mounting hole, these switches provide robust 4-pin DPST (Double Pole Single Throw) control, making them essential for high-current applications in automotive, marine, and industrial machinery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eThe FILN \u003cstrong\u003e12v rocker switches\u003c\/strong\u003e represent a benchmark in reliability and visual clarity. Utilizing a \u003cstrong\u003etransparent ordinary plastic surface\u003c\/strong\u003e, this switch allows the internal LED light to shine through brightly, ensuring clear status indication in pitch-black environments. Unlike standard models, it features a \u003cstrong\u003eframeless (no frame)\u003c\/strong\u003e integrated housing that provides an \u003cstrong\u003eIP65 waterproof\u003c\/strong\u003e rating, allowing for safe outdoor and industrial use. The 4-pin \u003cstrong\u003eterminal pins\u003c\/strong\u003e are designed for quick and secure installation. With global certifications including \u003cstrong\u003eISO9001, CE, VDE, RoHS, SGS, and UL\u003c\/strong\u003e, this KCD4 switch handles loads up to 30A with unmatched stability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin: 30px 0; border: 3px solid #28a745; padding: 15px; border-radius: 8px; text-align: center;\"\u003e\u003ca href=\"https:\/\/www.cnfiln.com\/collections\/rocker-switch\" style=\"color: #28a745; font-weight: 800; text-decoration: none; font-size: 18px;\" target=\"_blank\"\u003e ➜ CLICK HERE TO VIEW ALL ROCKER SWITCH PRODUCTS (OPEN NEW WINDOW) \u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eSwitch Function Principles (ON-OFF \u0026amp; ON-ON)\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px; margin-top: 10px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left; width: 20%;\"\u003eFunction\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eTechnical Principle\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eOperation Result\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eON-OFF\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSingle Throw: The switch bridges or breaks the circuit between two terminals.\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eUsed for main power control (Start\/Stop).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\u003cstrong\u003eON-ON\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eDouble Throw: Power is always directed to one of two different device paths.\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eUsed for alternating between two different modes or circuits.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eQuick Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px; margin-top: 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; width: 50%; background-color: #f9f9f9;\"\u003eModel Name\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eFL3-KCD4-0111-21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; background-color: #f9f9f9;\"\u003eMounting Cutout\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e30X22MM (1.18\" x 0.87\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; background-color: #f9f9f9;\"\u003eStandard Function\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eON-OFF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; background-color: #f9f9f9;\"\u003eLED Colors\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eRed, Green, Yellow, Blue, White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; background-color: #f9f9f9;\"\u003eTerminal Pins\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e4-Pin Quick Connect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; background-color: #f9f9f9;\"\u003eFrame Status\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eNo Frame (Integrated Body)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003ePerformance Parameters\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px; margin-top: 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px; width: 50%;\"\u003eRated Load\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e\n\u003cdiv\u003e\u003cspan\u003e16A 250VAC\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eRated Current\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e30A Max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eInitial Contact Resistance\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e≤50mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e≥100mΩ \/ 500VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eDielectric Strength\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e1500VAC \/ 5mA 60s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eEndurance Life\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e10,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eAmbient Temperature\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\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;\"\u003eProtection Rating\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eIP65 Waterproof\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=\"Global Product Certifications\" style=\"max-width: 100%; height: auto;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eComponent Materials\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #ddd; font-size: 14px; margin-top: 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"\u003eComponent 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;\"\u003eTransparent Actuator\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003ePolycarbonate (PC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eBase Housing\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003ePA66 \/ ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eTerminals \/ Pins\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eH62 Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eSilver Contact Point\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eAgCdO12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eWaterproof Seal\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eRubber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eTechnical Advantages of the 30A High-Current Rocker Switch\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 15px;\"\u003eThe FILN 30A High-Current Rocker Switch has been meticulously engineered for high-power loads and extreme durability. Below is a detailed technical comparison highlighting the superior features of our upgraded model:\u003c\/p\u003e\n\u003cdiv style=\"overflow-x: auto;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 25px; font-size: 14px; border: 1px solid #eee;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f4f7fb;\"\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #eee; text-align: left; color: #1a73e8;\"\u003eCore Component\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #eee; text-align: left; color: #1a73e8;\"\u003eUpgrade Description\u003c\/th\u003e\n\u003cth style=\"padding: 12px; border: 1px solid #eee; text-align: left; color: #1a73e8;\"\u003ePerformance Benefit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eHousing Structure\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eSplit Black Housing Design\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eSuperior structural stability and enhanced sealing for easier installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fafafa;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eWaterproof Design\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eOptimized Frame Surface\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eFits panels more securely, significantly improving waterproof and dustproof ratings.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eIllumination\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003ePremium LED Lamp\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eLonger lifespan and more uniform illumination compared to traditional neon lamps.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fafafa;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eContact Material\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eSilver Contacts + 1mm Thick Brass\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eRated for true 30A loads; provides higher electrical endurance and reliability.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eInner Holder\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eNew Larger Contact Holder\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eIncreases contact surface area to reduce heat generation during high-current operation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fafafa;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee; font-weight: bold;\"\u003eMaterial Grade\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eImported PA Nylon Material\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #eee;\"\u003eHigh-strength flame retardancy; resists cracking even in high-temperature environments.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch2 style=\"color: #1a73e8; border-left: 5px solid #1a73e8; padding-left: 12px; margin: 25px 0 15px; font-size: 22px; font-weight: bold;\"\u003eApplication \u0026amp; Selection Guide\u003c\/h2\u003e\n\u003cp style=\"margin-bottom: 25px;\"\u003eTo ensure the safety and longevity of your equipment, we recommend the \u003cstrong\u003e30A Upgraded Model\u003c\/strong\u003e for heavy-duty applications such as \u003cstrong\u003eIndustrial Control Panels, Outdoor Portable Power Stations, Marine Systems, and High-Performance Automotive modifications\u003c\/strong\u003e. For standard residential or lower-wattage appliances, our Regular Item remains a high-quality, cost-effective solution.\u003c\/p\u003e\n\u003cdiv class=\"product-image-container\" style=\"text-align: center; margin-top: 20px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Advantages-of-30A-Rocker-Switch.webp?v=1777108466\" alt=\"Advantages of 30A Rocker Switch Technical Comparison\" style=\"display: block; max-width: 100%; height: auto; margin: 0 auto; border: 1px solid #f0f0f0; border-radius: 4px; box-shadow: 0 4px 10px rgba(0,0,0,0.05);\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eAesthetic Choice: Transparent vs. Black Surfaces\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eFILN's \u003cstrong\u003eKCD4 rocker switch\u003c\/strong\u003e series provides multiple actuator finishes to suit different environments. The \u003cstrong\u003etransparent surface\u003c\/strong\u003e model is specifically designed for dark workspaces, as the LED illumination provides a brilliant status check. For a more versatile and stylish appearance, our \u003cstrong\u003eblack plastic surface\u003c\/strong\u003e is highly recommended. Black actuators are significantly \u003cstrong\u003eeasier to clean\u003c\/strong\u003e, maintain their professional look longer, and fit seamlessly into any modern dashboard or control panel design. Both options feature \u003cstrong\u003esnap-in installation\u003c\/strong\u003e and long operational life.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/high-quality-waterproof-rocker-switch.webp?v=1777108466\" alt=\"KCD4 Rocker Switch Comparison\" style=\"width: 100%; height: auto; margin-top: 10px; border-radius: 5px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eWide Range of Applications\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eEvery device requiring a reliable circuit toggle can benefit from the FILN \u003cstrong\u003e12v rocker switches\u003c\/strong\u003e. Common application fields include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppliances:\u003c\/strong\u003e Coffee machines, water dispensers, and air fryers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial:\u003c\/strong\u003e Machinery control panels and distribution boxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine \u0026amp; RV:\u003c\/strong\u003e 12V lighting control and interior accessory toggles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOffice Equipment:\u003c\/strong\u003e Power strips (PDU) and shredder master switches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Application-of-Rocker-Switches.webp?v=1777108480\" alt=\"Rocker Switch Usage Scenarios\" style=\"width: 100%; height: auto; margin-top: 10px; border-radius: 5px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eStep-by-Step Installation Guide\u003c\/h2\u003e\n\u003col style=\"margin-top: 10px;\"\u003e\n\u003cli\u003eMark and cut a \u003cstrong\u003e30x22mm\u003c\/strong\u003e rectangular opening on your mounting panel.\u003c\/li\u003e\n\u003cli\u003eAlign the rocker switch from the top (front) side of the panel.\u003c\/li\u003e\n\u003cli\u003eFirmly press the switch into the cutout; the \u003cstrong\u003eintegrated side clips\u003c\/strong\u003e will snap into place automatically.\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003e4-pin terminals\u003c\/strong\u003e on the back according to your wiring schematic to complete the installation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/Rocker-Switch-Installation-Steps.webp?v=177710907\" alt=\"Installation Steps for Rocker Switch\" style=\"width: 100%; height: auto; margin-top: 10px; border-radius: 5px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\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\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 style=\"max-width: 100%; height: auto; border: 1px solid #eee; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.1);\" alt=\"4 Pin Rocker Switch Wiring Diagram - Dependent Illumination\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/rocker_switch_wiring.webp?v=1777254975\"\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\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 style=\"max-width: 100%; height: auto; border: 1px solid #eee; border-radius: 4px; box-shadow: 0 2px 5px rgba(0,0,0,0.1);\" alt=\"4 Pin Rocker Switch Wiring Diagram - Constant Illumination\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0266\/7420\/0638\/files\/4_pin_rocker_switch_wiring_diagram.webp?v=1777255069\"\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\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 style=\"padding: 12px; border: 1px solid #ddd;\" rowspan=\"2\"\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 style=\"padding: 12px; border: 1px solid #ddd;\" rowspan=\"2\"\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\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\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eIndustry Knowledge: How It Works\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eA \u003cstrong\u003erocker switch\u003c\/strong\u003e functions via a \"see-saw\" mechanical pivot. Pressing one side pushes an internal contact arm into position, bridging metal contacts to complete an electrical circuit. The \u003cstrong\u003eKCD4 series\u003c\/strong\u003e is particularly valued for its \u003cstrong\u003eDPST (Double Pole Single Throw)\u003c\/strong\u003e configuration, which allows for the simultaneous disconnection of both power lines—providing a critical safety layer for high-voltage industrial equipment. The \u003cstrong\u003ePC transparent surface\u003c\/strong\u003e is highly heat-resistant, ensuring safety even under 30A loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 40px; background-color: #f1f3f4; padding: 25px; border-radius: 10px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eFactory Direct Supply \u0026amp; Customization\u003c\/h2\u003e\n\u003cp style=\"margin-top: 10px;\"\u003eFILN is a world-class factory providing high-quality switches with \u003cstrong\u003eNo MOQ\u003c\/strong\u003e and rapid delivery times. We offer extensive customization services:\u003c\/p\u003e\n\u003cul style=\"list-style: none; padding-left: 0;\"\u003e\n\u003cli\u003e✅ \u003cstrong\u003eVoltage Customization:\u003c\/strong\u003e 5V, 12V, 24V, 110V, 220V Options.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eWire \u0026amp; Connector:\u003c\/strong\u003e Pre-soldered wires and custom connectors.\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eGlobal Shipping:\u003c\/strong\u003e Fast international logistics for B2B clients.\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: 10px 20px; text-decoration: none; border-radius: 5px; font-weight: bold;\"\u003eGET FREE SAMPLES NOW\u003c\/a\u003e\u003c\/div\u003e\n\u003cp style=\"margin-top: 20px;\"\u003e\u003cstrong\u003eOfficial Website:\u003c\/strong\u003e \u003ca href=\"https:\/\/www.filn.com\" style=\"color: #1a73e8;\" target=\"_blank\"\u003ewww.filn.com\u003c\/a\u003e\u003cbr\u003e\u003cstrong\u003eContact:\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 Factory Production\" style=\"width: 100%; height: auto; margin-top: 15px; border-radius: 5px;\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 35px;\"\u003e\n\u003ch2 style=\"color: #1a73e8; font-weight: bold; display: inline-block; margin-bottom: 2px; border-bottom: 2px solid #1a73e8; padding-bottom: 2px; width: 100%;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 10px;\"\u003e\n\u003cp\u003e\u003cstrong\u003e1. How many pins does this 12v rocker switch have?\u003c\/strong\u003e\u003cbr\u003eThis model features 4 pins (DPST) for controlling both positive and negative lines simultaneously.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Can I use the transparent 12V rocker switches on a 220V AC circuit?\u003c\/strong\u003e\u003cbr\u003eWhile the body can handle the load, the LED must match the voltage. FILN offers custom 110V\/220V LED versions upon request.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. What is the benefit of the transparent plastic surface?\u003c\/strong\u003e\u003cbr\u003eIt allows for 360-degree light diffusion, making the switch highly visible and functional as an indicator lamp.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Is the KCD4 30x22mm switch waterproof?\u003c\/strong\u003e\u003cbr\u003eYes, it features an integrated frameless design with an IP65 waterproof rating, suitable for outdoor use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. What is the difference between ON-OFF and ON-ON functions?\u003c\/strong\u003e\u003cbr\u003eON-OFF is a standard power disconnect, while ON-ON switches power between two different output paths.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Does this switch have an external mounting frame?\u003c\/strong\u003e\u003cbr\u003eNo, this model is a frameless design, allowing for a flush, clean installation on compact panels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. How do I install a snap-in rocker switch?\u003c\/strong\u003e\u003cbr\u003eSimply cut the 30x22mm hole and push the switch in; the side clips will automatically lock it to the panel.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e8. Are the silver contacts reliable for high current?\u003c\/strong\u003e\u003cbr\u003eYes, FILN uses AgCdO12 silver contacts which are designed to handle up to 30A without welding or overheating.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e9. Can FILN provide switches with pre-wired harnesses?\u003c\/strong\u003e\u003cbr\u003eYes, we offer customization for wire lengths and specific connectors to save your assembly time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e10. Does this product carry global safety certifications?\u003c\/strong\u003e\u003cbr\u003eAbsolutely. Our switches are UL, CE, VDE, RoHS, and SGS certified for international markets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n    {\n      \"@context\": \"https:\/\/schema.org\",\n      \"@type\": \"FAQPage\",\n      \"mainEntity\": [\n        {\n          \"@type\": \"Question\",\n          \"name\": \"How many pins does this 12v rocker switch have?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"This model is equipped with 4 pins (DPST), allowing it to control two separate circuit poles or both live and neutral lines simultaneously.\"\n          }\n        },\n        {\n          \"@type\": \"Question\",\n          \"name\": \"Is the KCD4 30x22mm switch waterproof?\",\n          \"acceptedAnswer\": {\n            \"@type\": \"Answer\",\n            \"text\": \"Yes, it has an IP65 protection rating and a frameless integrated body design for superior moisture resistance.\"\n          }\n        }\n      ]\n    }\n    \u003c\/script\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KCD4 Rocker Switch","offers":[{"title":"ON-OFF \/ Red \/ 5-24V","offer_id":39612725985342,"sku":"FL3-KCD4-0111-21-1-R-524V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Red \/ 110-220V","offer_id":39612726018110,"sku":"FL3-KCD4-0111-21-1-R-110220V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Red \/ Customization (please note)","offer_id":39612726050878,"sku":"FL3-KCD4-0111-21-1-R-C","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Green \/ 5-24V","offer_id":39612726771774,"sku":"FL3-KCD4-0111-21-1-G-524V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Green \/ 110-220V","offer_id":39612726804542,"sku":"FL3-KCD4-0111-21-1-G-110220V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Green \/ Customization (please note)","offer_id":39612726837310,"sku":"FL3-KCD4-0111-21-1-G-C","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Yellow \/ 5-24V","offer_id":39612726181950,"sku":"FL3-KCD4-0111-21-1-Y-524V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Yellow \/ 110-220V","offer_id":39612726214718,"sku":"FL3-KCD4-0111-21-1-Y-110220V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Yellow \/ Customization (please note)","offer_id":39612726247486,"sku":"FL3-KCD4-0111-21-1-Y-C","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Blue \/ 5-24V","offer_id":39612726378558,"sku":"FL3-KCD4-0111-21-1-B-524V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Blue \/ 110-220V","offer_id":39612726411326,"sku":"FL3-KCD4-0111-21-1-B-110220V","price":2.56,"currency_code":"USD","in_stock":true},{"title":"ON-OFF \/ Blue \/ Customization (please 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