{"product_id":"littelfuse-kldr-3-10-fuse","title":"Littelfuse KLDR-3\/10 Class CC Time-Delay Fuse","description":"\u003cstyle\u003e.nxs-industrial-product-page{--industrial-navy:#082f49;--industrial-blue:#0b4f7c;--industrial-blue-2:#0f6ea8;--industrial-blue-3:#1784c1;--industrial-cyan:#38bdf8;--steel-line:#c9dce9;--surface:#ffffff;--surface-soft:#f7fbfe;--text-main:#173042;--shadow-soft:0 10px 30px rgba(8,47,73,0.08);--shadow-hover:0 16px 36px rgba(8,79,124,0.15);--radius-lg:14px;--radius-md:10px}.nxs-industrial-product-page,.nxs-industrial-product-page *{margin:0;padding:0;box-sizing:border-box;font-family:Arial,Helvetica,sans-serif}.nxs-industrial-product-page{background-color:#f3f8fb;background-image:linear-gradient(180deg,#eef6fb 0,#f7fafc 320px,#eef3f7 100%),linear-gradient(rgba(15,110,168,0.025) 1px,transparent 1px),linear-gradient(90deg,rgba(15,110,168,0.025) 1px,transparent 1px);background-size:auto,34px 34px,34px 34px;position:relative;isolation:isolate;overflow:hidden;color:var(--text-main);line-height:1.75;-webkit-font-smoothing:antialiased}.nxs-industrial-product-page .container{width:92%;max-width:1120px;margin:0 auto;padding-bottom:34px}.nxs-industrial-product-page main{padding-top:8px}.nxs-industrial-product-page .section{position:relative;overflow:hidden;background:var(--surface);margin:22px auto;padding:36px 30px;border:1px solid var(--steel-line);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft)}.nxs-industrial-product-page .section::before{content:'';position:absolute;left:0;top:0;width:5px;height:100%;background:linear-gradient(180deg,var(--industrial-blue-3),var(--industrial-blue))}.nxs-industrial-product-page .section h2{position:relative;display:inline-flex;align-items:center;gap:10px;font-size:25px;line-height:1.3;color:var(--industrial-navy);margin-bottom:24px;letter-spacing:-0.2px}.nxs-industrial-product-page .section h2::before{content:'';width:28px;height:4px;flex:0 0 28px;border-radius:999px;background:linear-gradient(90deg,var(--industrial-blue-2),var(--industrial-cyan))}.nxs-industrial-product-page .section p{color:var(--text-main)}.nxs-industrial-product-page .spec-table{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border:1px solid var(--steel-line);border-radius:var(--radius-md);background:#fff}.nxs-industrial-product-page .spec-table tr{transition:background-color .2s ease}.nxs-industrial-product-page .spec-table tr:nth-child(even){background:#f7fbfe}.nxs-industrial-product-page .spec-table tr:hover{background:#eaf5fb}.nxs-industrial-product-page .spec-table td{padding:13px 16px;border-bottom:1px solid #dbe7ef;vertical-align:top;color:#294658}.nxs-industrial-product-page .spec-table tr:last-child td{border-bottom:none}.nxs-industrial-product-page .spec-table td:first-child{position:relative;width:38%;font-weight:700;color:#0b456d;background:rgba(220,235,245,0.42)}.nxs-industrial-product-page .spec-table td:first-child::after{content:'';position:absolute;top:22%;right:0;width:1px;height:56%;background:#c7dce9}.nxs-industrial-product-page .features{display:grid;grid-template-columns:repeat(auto-fit,minmax(235px,1fr));gap:18px}.nxs-industrial-product-page .card{position:relative;overflow:hidden;min-height:100%;background:linear-gradient(180deg,#fff 0%,#f4f9fc 100%);padding:22px 20px 21px;border:1px solid #d5e4ee;border-radius:var(--radius-md);box-shadow:0 6px 18px rgba(8,47,73,.055);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}.nxs-industrial-product-page .card::before{content:'';position:absolute;left:0;top:0;width:100%;height:4px;background:linear-gradient(90deg,var(--industrial-blue),var(--industrial-cyan))}.nxs-industrial-product-page .card::after{content:'';position:absolute;width:74px;height:74px;right:-28px;bottom:-30px;border:1px solid rgba(15,110,168,.12);border-radius:50%;transition:transform .22s ease}.nxs-industrial-product-page .card:hover{transform:translateY(-4px);border-color:#a9cadf;box-shadow:var(--shadow-hover)}.nxs-industrial-product-page .card:hover::after{transform:scale(1.25)}.nxs-industrial-product-page .card h3{position:relative;color:var(--industrial-blue);font-size:18px;line-height:1.35;margin-bottom:10px;padding-left:14px}.nxs-industrial-product-page .card h3::before{content:'';position:absolute;left:0;top:.25em;width:4px;height:1em;border-radius:4px;background:var(--industrial-blue-3)}.nxs-industrial-product-page .card p{color:#526a79;font-size:15px}.nxs-industrial-product-page .section ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px 18px;padding-left:0;list-style:none}.nxs-industrial-product-page .section li{position:relative;margin:0;padding:12px 14px 12px 38px;background:var(--surface-soft);border:1px solid #dbe8f0;border-radius:8px;color:#365264}.nxs-industrial-product-page .section li::before{content:'';position:absolute;left:15px;top:50%;width:9px;height:9px;transform:translateY(-50%) rotate(45deg);background:var(--industrial-blue-2);box-shadow:0 0 0 4px rgba(15,110,168,.1)}.nxs-industrial-product-page .section:nth-of-type(4) p{padding:18px 20px;background:linear-gradient(135deg,#edf7fc,#f9fcfe);border:1px solid #cfe4f1;border-left:4px solid var(--industrial-blue-2);border-radius:9px;color:#355267}.nxs-industrial-product-page .section:last-of-type{counter-reset:faq}.nxs-industrial-product-page .section:last-of-type\u003ep{position:relative;margin:0;padding:18px 18px 18px 54px;background:#f8fbfd;border:1px solid #d8e6ef;border-radius:9px;box-shadow:0 4px 12px rgba(8,47,73,.035);transition:border-color .2s ease,background-color .2s ease;counter-increment:faq}.nxs-industrial-product-page .section:last-of-type\u003ep:hover{background:#f1f8fc;border-color:#bfd8e7}.nxs-industrial-product-page .section:last-of-type\u003ep::before{content:counter(faq,decimal-leading-zero);position:absolute;left:15px;top:17px;min-width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border-radius:6px;background:var(--industrial-blue);color:#fff;font-size:11px;font-weight:700;letter-spacing:.3px;box-shadow:0 5px 12px rgba(8,79,124,.18)}.nxs-industrial-product-page .section:last-of-type\u003ep strong{display:inline-block;color:#0b456d;margin-bottom:5px;line-height:1.4}.nxs-industrial-product-page .section:last-of-type\u003ebr{display:block;content:'';margin:10px 0}@media(max-width:760px){.nxs-industrial-product-page .container{width:100%;padding:0 12px 24px}.nxs-industrial-product-page .section{padding:26px 17px 24px;margin:14px auto;border-radius:11px}.nxs-industrial-product-page .section::before{width:4px}.nxs-industrial-product-page .section h2{font-size:21px;margin-bottom:18px}.nxs-industrial-product-page .section h2::before{width:20px;flex-basis:20px}.nxs-industrial-product-page .spec-table{display:table;table-layout:fixed}.nxs-industrial-product-page .spec-table td{padding:11px 9px;font-size:13px;line-height:1.55;overflow-wrap:anywhere}.nxs-industrial-product-page .spec-table td:first-child{width:42%}.nxs-industrial-product-page .features{grid-template-columns:1fr;gap:12px}.nxs-industrial-product-page .card{padding:18px 17px}.nxs-industrial-product-page .card:hover{transform:none}.nxs-industrial-product-page .section ul{grid-template-columns:1fr;gap:9px}.nxs-industrial-product-page .section li{padding:11px 12px 11px 36px;font-size:14px}.nxs-industrial-product-page .section:last-of-type\u003ep{padding:16px 14px 16px 48px;font-size:14px}.nxs-industrial-product-page .section:last-of-type\u003ep::before{left:12px;top:15px;min-width:26px;height:26px;font-size:10px}}@media(prefers-reduced-motion:reduce){.nxs-industrial-product-page,.nxs-industrial-product-page *,.nxs-industrial-product-page *::before,.nxs-industrial-product-page *::after{transition:none!important}}\u003c\/style\u003e\n\u003cdiv class=\"nxs-industrial-product-page\"\u003e\n\u003cdiv class=\"container\"\u003e\u003cmain\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eLittelfuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eKLDR-3\/10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eClass CC Time-Delay Fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003ePOWR-GARD KLDR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Rating\u003c\/td\u003e\n\u003ctd\u003e0.3 A (300 mA, 3\/10 A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e600 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Voltage Rating\u003c\/td\u003e\n\u003ctd\u003e300 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Class\u003c\/td\u003e\n\u003ctd\u003eUL Class CC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Characteristic\u003c\/td\u003e\n\u003ctd\u003eTime-Delay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e0.3 A Low-Current Protection\u003c\/h3\u003e\n\u003cp\u003eThe Littelfuse KLDR-3\/10 provides a 0.3 ampere current rating for appropriately specified low-current industrial control circuits and inductive equipment. Its 300 mA rating supports applications requiring three-tenths ampere Class CC fuse protection.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003e600 VAC and 300 VDC Ratings\u003c\/h3\u003e\n\u003cp\u003eRated for compatible electrical circuits up to 600 VAC or 300 VDC. The manufacturer specifies separate AC and DC interrupting ratings, supporting suitable electrical protection designs that meet the applicable operating voltage and fault-current requirements.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eTime-Delay Characteristics\u003c\/h3\u003e\n\u003cp\u003eDesigned to accommodate temporary magnetizing current surges associated with control transformers, solenoids and similar inductive components. The UL opening-time requirement specifies at least 12 seconds at 200% of rated current rather than a fixed opening time.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eHigh Interrupting Capacity\u003c\/h3\u003e\n\u003cp\u003eOffers a 200 kA RMS symmetrical AC interrupting rating and a separately specified 20 kA DC interrupting rating. Littelfuse identifies the DC rating as self-certified. Select the fuse based on the corresponding circuit voltage and available short-circuit current.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eCurrent-Limiting Class CC Construction\u003c\/h3\u003e\n\u003cp\u003eThe current-limiting design helps reduce thermal and magnetic effects of short-circuit currents. Its rejection capability helps prevent installation of unsuitable lower-voltage or lower-interrupting-rated fuses when used with corresponding rejection-type holders.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003carticle class=\"card\"\u003e\n\u003ch3\u003eCompact Industrial Fuse Design\u003c\/h3\u003e\n\u003cp\u003eFeatures a melamine body with nickel-plated bronze caps in a nominal 10.3 x 38.1 mm cartridge format. Suitable accessories include compatible Littelfuse L60030C, LPSC\/LFPSC, LEC and 571\/572 fuse holder series.\u003c\/p\u003e\n\u003c\/article\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial control transformer protection\u003c\/li\u003e\n\u003cli\u003eSolenoid circuit overcurrent protection\u003c\/li\u003e\n\u003cli\u003eLow-current inductive control circuits\u003c\/li\u003e\n\u003cli\u003eIndustrial control panels using Class CC fuses\u003c\/li\u003e\n\u003cli\u003eCompatible motor branch circuits with IEC motor controllers\u003c\/li\u003e\n\u003cli\u003eMotor control circuits with suitable NEMA contactors\u003c\/li\u003e\n\u003cli\u003eCompatible 600 VAC and 300 VDC control circuits\u003c\/li\u003e\n\u003cli\u003eExact-rating replacement in suitable Class CC fuse holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the Littelfuse KLDR-3\/10 Class CC Time-Delay Fuse. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods. Confirm the required purchase quantity and packaging configuration before ordering.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"section\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Littelfuse KLDR-3\/10?\u003c\/strong\u003e\u003cbr\u003eIt is a 0.3 A Class CC time-delay, current-limiting cartridge fuse in the Littelfuse POWR-GARD KLDR series, intended for appropriately designed control transformer, solenoid and industrial control applications.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the manufacturer catalog number?\u003c\/strong\u003e\u003cbr\u003eThe 3\/10 A version is identified as KLDR.300 in the Littelfuse manufacturer datasheet. KLDR-3\/10 is a fractional-amperage model designation corresponding to this rating.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the current rating?\u003c\/strong\u003e\u003cbr\u003eThe rated current is 0.3 ampere, equivalent to 300 milliamperes or three-tenths of an ampere.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the AC and DC voltage ratings?\u003c\/strong\u003e\u003cbr\u003eThe fuse is rated for 600 VAC and 300 VDC. Confirm the applicable voltage rating and circuit requirements before installation.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the AC and DC interrupting ratings?\u003c\/strong\u003e\u003cbr\u003eThe AC interrupting rating is 200,000 amperes RMS symmetrical, while the DC interrupting rating is 20,000 amperes. Littelfuse identifies the DC interrupting rating as self-certified.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eIs KLDR-3\/10 a time-delay or fast-acting fuse?\u003c\/strong\u003e\u003cbr\u003eKLDR-3\/10 is a time-delay fuse. The KLDR series is designed to tolerate temporary magnetizing inrush currents from control transformers, solenoids and similar inductive components.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eDoes KLDR-3\/10 open in exactly 12 seconds at twice its rated current?\u003c\/strong\u003e\u003cbr\u003eNo. The UL agency requirement specifies an opening time of at least 12 seconds at 200% of the rated current. This is a minimum requirement, not a fixed clearing time. Consult the manufacturer's time-current curves for circuit design.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the pre-arcing and total clearing I²t values?\u003c\/strong\u003e\u003cbr\u003eLittelfuse specifies a pre-arcing I²t value of 0.0111 A²s and a total clearing I²t value of 0.1005 A²s in the electrical specifications table. The total clearing figure is presented for the manufacturer's 200 kA test condition.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the physical dimensions?\u003c\/strong\u003e\u003cbr\u003eThe nominal dimensions are 10.3 mm in diameter and 38.1 mm in length, approximately 0.41 inch by 1.50 inches.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat materials and fuse holders are used?\u003c\/strong\u003e\u003cbr\u003eLittelfuse specifies a melamine body with nickel-plated bronze caps. Compatible holder options include appropriately rated products in the L60030C, LPSC\/LFPSC, LEC and 571\/572 series.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eIs KLDR-3\/10 UL listed and RoHS compliant?\u003c\/strong\u003e\u003cbr\u003eThe KLDR datasheet identifies the series as UL Listed under file E81895, CSA Certified under file LR29862 and RoHS compliant. It also references a CE declaration. The DC interrupting rating is manufacturer self-certified.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be verified before ordering?\u003c\/strong\u003e\u003cbr\u003eConfirm the KLDR-3\/10 or KLDR.300 designation, 0.3 A current rating, 600 VAC or 300 VDC voltage requirement, applicable AC or DC interrupting capacity, time-delay characteristics, fuse-holder compatibility and purchase quantity. Littelfuse lists KLDR.300TXP for a 10-piece manufacturer pack and KLDR.300HXP for a 100-piece manufacturer pack; these codes do not determine the quantity supplied in an individual store listing.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Littelfuse","offers":[{"title":"10PCS","offer_id":67898407845967,"sku":"LL1-LI-KLDR-3\/10*10","price":48.86,"currency_code":"USD","in_stock":true},{"title":"5PCS","offer_id":67898407878735,"sku":"LL1-LI-KLDR-3\/10*5","price":27.92,"currency_code":"USD","in_stock":true},{"title":"1PCS","offer_id":67898407911503,"sku":"LL1-LI-KLDR-3\/10*1","price":6.98,"currency_code":"USD","in_stock":true},{"title":"20PCS","offer_id":67898407944271,"sku":"LL1-LI-KLDR-3\/10*20","price":83.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/KLDR-3_10-01.jpg?v=1793169468","url":"https:\/\/yunshuotrade.com\/products\/littelfuse-kldr-3-10-fuse","provider":"yunshuotrade","version":"1.0","type":"link"}