{"product_id":"automotive-relay-303-1ah-c-r1-u01-12vdc-4-pin-ce-certified","title":"Automotive Relay 303-1AH-C-R1 U01 12VDC 4-Pin | CE Certified","description":"\u003ch2\u003eAutomotive Relay 303-1AH-C-R1 U01 – 12VDC 4-Pin\u003c\/h2\u003e\n\u003cp\u003eKeep your vehicle's electrical systems running smoothly with this 100% brand-new \u003cstrong\u003e303-1AH-C-R1 U01 Automotive Relay\u003c\/strong\u003e. Designed for 12V DC circuits, this compact 4-pin relay is a dependable replacement or upgrade component for a wide range of automotive and low-voltage electrical applications. CE certified and built to standard specifications, it's a straightforward, reliable solution for hobbyists, auto technicians, and DIY enthusiasts alike.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e 303-1AH-C-R1 U01\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Voltage:\u003c\/strong\u003e 12V DC (12VDC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Configuration:\u003c\/strong\u003e 4-Pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE (Low Voltage Directive – below 50V AC or 75V DC)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e 100% Brand New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e 1 × Automotive Relay\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Relay?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCE Certified\u003c\/strong\u003e – Meets EU Low Voltage Directive requirements for peace of mind\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eStandard 4-Pin Layout\u003c\/strong\u003e – Easy to swap in and out with compatible sockets\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003e12VDC Operation\u003c\/strong\u003e – Ideal for standard automotive and low-voltage control circuits\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact \u0026amp; Durable\u003c\/strong\u003e – Sturdy black housing designed to withstand typical under-hood conditions\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eGenuine New Stock\u003c\/strong\u003e – Not refurbished or repackaged\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomotive electrical switching circuits\u003c\/li\u003e\n  \u003cli\u003eVehicle lighting control (headlights, fog lights, accessories)\u003c\/li\u003e\n  \u003cli\u003eHorn, starter, or fan relay replacement\u003c\/li\u003e\n  \u003cli\u003eLow-voltage DC control panels and DIY projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/60cm-motorcycle-luggage-strap-elastic-helmet-bungee-net\"\u003e60cm Motorcycle Luggage Strap – Elastic Helmet Bungee Net\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.fueleconomy.gov\/feg\/drive.shtml\" target=\"_blank\" rel=\"noopener\"\u003eFuelEconomy.gov driving efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the operating voltage of the 303-1AH-C-R1 U01 automotive relay?\u003c\/h4\u003e\n\u003cp\u003eA: This automotive relay is designed for 12V DC (12VDC) coil operation, making it compatible with standard 12-volt vehicle electrical systems and low-voltage DC control circuits.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many pins does this relay have, and is it easy to install?\u003c\/h4\u003e\n\u003cp\u003eA: The relay features a standard 4-pin configuration, which is commonly used in automotive wiring harnesses. It is straightforward to install in any compatible relay socket — simply match the pin layout and plug it in.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this relay brand new or refurbished?\u003c\/h4\u003e\n\u003cp\u003eA: This is 100% brand new stock — not refurbished, used, or repackaged. It comes CE certified and ready for direct installation in your vehicle or project.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the operating voltage of the 303-1AH-C-R1 U01 automotive relay?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This automotive relay is designed for 12V DC (12VDC) coil operation, making it compatible with standard 12-volt vehicle electrical systems and low-voltage DC control circuits.\"}}, {\"@type\": \"Question\", \"name\": \"How many pins does this relay have, and is it easy to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The relay features a standard 4-pin configuration, which is commonly used in automotive wiring harnesses. 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