{"product_id":"303-1ah-c-r1-u01-12vdc-genuine-song-chuan®-pins-automotive-relay","title":"303-1AH-C-R1-U01-12VDC | Genuine Song Chuan® Pins Automotive Relay","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA \"pins automotive relay\"\u003cstrong\u003e 303-1AH-C-R1-U01-12VDC\u003c\/strong\u003e refers to the metal terminals (pins) at the bottom of the relay that connect it to a vehicle's electrical system. Pins Automotive Relay, work condition, used take-off Kenworth T880 2024\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003ePart Number\u003c\/strong\u003e: 303-1AH-C-R1-U01-12VDC, 3031AHCR1U0112VDC\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: Used In Good Condition\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Song Chuan\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eSpecifications For 303-1AH-C-R1-U01-12VDC\u003c\/strong\u003e:\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eCoil Voltage: 12 VDC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eRelay Contact Form: 1 Form A (SPST-NO)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMounting Style: PCB Mount\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eContact Material: Silver Tin Oxide (AgSnO)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSeries: 303\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eContact Form: SPST (1 Form A)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePower Consumption: 960 mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMaximum Amperage: 20 A\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cbr\u003eFits 303-1AH-C-R1-U01-12VDC For \u003cbr\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"3713\" data-end=\"3866\"\u003e\n\u003cp data-start=\"3715\" data-end=\"3866\"\u003eAutomotive systems (cars, trucks) where high current circuits (lights, fans, pumps, power systems) need to be switched via a low-current control line\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3867\" data-end=\"3948\"\u003e\n\u003cp data-start=\"3869\" data-end=\"3948\"\u003eHeavy trucks or off‑road vehicles using 24V systems might use the 24V variant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3949\" data-end=\"4032\"\u003e\n\u003cp data-start=\"3951\" data-end=\"4032\"\u003eAnywhere a compact high-current relay is needed in a modular socket arrangement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4033\" data-end=\"4196\"\u003e\n\u003cp data-start=\"4035\" data-end=\"4196\"\u003eThe “flux tight” \/ sealed variant may be used in environments subject to contamination, vibration, or exposure (engine compartments, underbody control modules)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003ePurpose of using 303-1AH-C-R1-U01-12VDC:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong data-end=\"1360\" data-start=\"1319\"\u003eSwitch high current loads (up to 70A)\u003c\/strong\u003e using a small control signal\u003cbr data-end=\"1392\" data-start=\"1389\"\u003e\u003cstrong data-end=\"1430\" data-start=\"1394\"\u003eProtect switches and ECU outputs\u003c\/strong\u003e from high current flow\u003cbr data-end=\"1456\" data-start=\"1453\"\u003e\u003cstrong data-end=\"1486\" data-start=\"1458\"\u003eReduce wiring complexity\u003c\/strong\u003e by placing the relay near the power source\/device\u003cbr data-end=\"1539\" data-start=\"1536\"\u003e\u003cstrong data-end=\"1569\" data-start=\"1541\"\u003eIsolate control circuits\u003c\/strong\u003e from power circuits (safer and more reliable)\u003cbr data-end=\"1618\" data-start=\"1615\"\u003e\u003cstrong data-end=\"1645\" data-start=\"1620\"\u003eExtend component life\u003c\/strong\u003e by reducing arcing at control switches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Pins Automotive Relay 303-1AH-C-R1-U01-12VDC:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003ePossible Cause\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eDevice not turning on\u003c\/strong\u003e (e.g. fan, light, fuel pump)\u003c\/td\u003e\n\u003ctd\u003eRelay contacts are burned or stuck open\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eClicking sound but no power output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoil is working, but internal contacts are damaged or worn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNo clicking sound when activated\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCoil is dead, or pins 85\/86 aren’t getting power\/ground\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eRelay gets hot\u003c\/strong\u003e (even under light load)\u003c\/td\u003e\n\u003ctd\u003eHigh internal resistance from worn or pitted contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBlown fuse repeatedly\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShorted coil or welded internal contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntermittent operation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLoose or corroded pins, or failing coil winding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage at pin 30 but nothing at pin 87 when triggered\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInternal switching failure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003eAbout the Manufacturer – Song Chuan:\u003c\/strong\u003e\u003cbr data-end=\"154\" data-start=\"151\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"96\" data-end=\"400\"\u003e\u003cstrong data-start=\"0\" data-end=\"14\" data-is-only-node=\"\"\u003eSong Chuan\u003c\/strong\u003e is a global manufacturer of high-quality \u003cstrong data-start=\"56\" data-end=\"84\"\u003eelectromechanical relays\u003c\/strong\u003e, known for their reliability, performance, and innovation. Founded in 1974 and headquartered in Taiwan, the company produces a wide range of relays for \u003cstrong data-start=\"237\" data-end=\"289\"\u003eautomotive, industrial, and consumer electronics\u003c\/strong\u003e applications. Song Chuan is recognized for combining \u003cstrong data-start=\"343\" data-end=\"369\"\u003ecost-effective designs\u003c\/strong\u003e with \u003cstrong data-start=\"375\" data-end=\"403\"\u003estrict quality standards\u003c\/strong\u003e, making it a trusted supplier for OEMs and tier-1 manufacturers worldwide.\u003c\/p\u003e","brand":"Song Chuan","offers":[{"title":"Default Title","offer_id":50307862593783,"sku":"303-1AH-C-R1-U01-12VDC","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/s-l1600-2025-11-27T000807.619.webp?v=1764194894","url":"https:\/\/forcetruckparts.com\/products\/303-1ah-c-r1-u01-12vdc-genuine-song-chuan%c2%ae-pins-automotive-relay","provider":"Force Truck Parts","version":"1.0","type":"link"}