{"product_id":"fuse-mrbf-300a","title":"Fusível do terminal MRBF (sobressalente) - 100A a 300A","description":"\u003cp style=\"text-align: center; font-size: 1.1em; font-weight: bold;\"\u003eSpare part - Blue Sea MRBF Terminal Fuse, 100A to 300A\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003eBuying a fresh install? The \u003ca href=\"\/pt\/products\/fuse-mrbf-kit\"\u003eMRBF Fuse Kit\u003c\/a\u003e is better value (block + fuse in your chosen rating for £36.99 inc VAT).\u003c\/p\u003e\n\u003ch2\u003eAbout this part\u003c\/h2\u003e\n\u003cp\u003eBlue Sea Systems Marine-Rated Battery Fuse, available in five ratings from 100A to 300A. Designed for use with the matching MRBF Terminal Fuse Block - never mount this fuse directly to a battery terminal.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIgnition-protected (safe for installation aboard gasoline-powered boats)\u003c\/li\u003e\n\u003cli\u003eClear window for visual blown-state indication\u003c\/li\u003e\n\u003cli\u003eColor-coded for amperage\u003c\/li\u003e\n\u003cli\u003eSatisfies ABYC requirements for DC main circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eChoosing a rating\u003c\/h2\u003e\n\u003cp\u003eAll five ratings share the same physical format, the same 58V DC voltage rating and the same interrupt capacity - only the amp rating (and body colour) changes. Every rating fits the same MRBF block.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300A\u003c\/strong\u003e - our default recommendation. Satisfies BS 7671's worst-case short-circuit requirement without nuisance-tripping on legitimate inrush (inverter startup, induction hobs, large DC-DC chargers).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100A-250A\u003c\/strong\u003e - choose a lower rating if you want the main fuse matched to your cable: pick the lowest rating that comfortably exceeds your maximum continuous system draw, and that does not exceed the continuous rating of your main positive cable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant: read before installing\u003c\/h2\u003e\n\u003cp style=\"border:1px solid #FFAB00;padding:14px 18px;margin:16px 0;\"\u003e\u003cstrong style=\"color:#FFAB00;letter-spacing:0.06em;\"\u003eHeads up.\u003c\/strong\u003e The 300A option is a short-circuit compliance fuse - not a cable-protection fuse.\u003c\/p\u003e\n\u003cp\u003eAt 300A the rating exists to satisfy BS 7671's worst-case short-circuit requirement without nuisance-tripping on legitimate inrush currents. It is \u003cem\u003enot\u003c\/em\u003e sized to protect any one cable or load downstream - so with a 300A fuse you remain responsible for either cabling rated for at least 300A continuous, or correctly-sized secondary fuses close to each load.\u003c\/p\u003e\n\u003cp\u003eThe lower ratings (100A-250A) let you bring the main fuse down to match your cable instead. A fuse holds 100% of its rating and tolerates brief surges well beyond it, so size to your continuous load - but check your inverter's startup surge against the rating before going tight.\u003c\/p\u003e\n\u003cp\u003eFor full sizing guidance see the \u003ca href=\"\/pt\/products\/fuse-mrbf-kit\"\u003eMRBF Fuse Kit\u003c\/a\u003e listing. If you're unsure, please ask before fitting.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmperage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100A \/ 150A \/ 200A \/ 250A \/ 300A (select above)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e58V DC (all ratings)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAIC (Interrupt capacity)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10,000A @ 14V DC · 5,000A @ 32V DC · 2,000A @ 58V DC (all ratings)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIgnition-protected\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.03 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer part numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlue Sea Systems - 100A: 5183 · 150A: 5185 · 200A: 5187 · 250A: 5189 · 300A: 5190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical reference\u003c\/h3\u003e\n\u003cp style=\"font-size: 0.9em; color: #888;\"\u003eDrawings \u0026amp; curves sourced from Blue Sea Systems product documentation. Dimensions and trip curves apply to all ratings; trip currents scale with the nominal rating.\u003c\/p\u003e\n\u003cfigure style=\"margin: 28px 0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0884\/4253\/6201\/files\/5175-5190_dim_9a2c5985-86d7-48a4-ae50-544c2c19ebff.jpg?v=1777480110\" alt=\"MRBF terminal fuse dimensioned drawing - Blue Sea Systems 5175-5190\" loading=\"lazy\" style=\"display: block; max-width: 100%; height: auto; background: #fff; padding: 8px; margin: 0 auto;\"\u003e\n\u003cfigcaption style=\"text-align: center; font-size: 0.9em; color: #888; margin-top: 10px;\"\u003eDimensioned drawing - Blue Sea 5175-5190\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003cfigure style=\"margin: 28px 0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0884\/4253\/6201\/files\/mrbf_tcc_52c1bcf3-6479-4e4c-b6a6-f2ab27ee893a.jpg?v=1777480110\" alt=\"MRBF terminal fuse trip-delay (time-current) curve - Blue Sea Systems\" loading=\"lazy\" style=\"display: block; max-width: 100%; height: auto; background: #fff; padding: 8px; margin: 0 auto;\"\u003e\n\u003cfigcaption style=\"text-align: center; font-size: 0.9em; color: #888; margin-top: 10px;\"\u003eTrip-delay curve - MRBF terminal fuses\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n","brand":"Blue Sea Systems","offers":[{"title":"300A","offer_id":57027526885641,"sku":"5190","price":16.99,"currency_code":"GBP","in_stock":true},{"title":"250A","offer_id":57174861611273,"sku":"5189","price":16.99,"currency_code":"GBP","in_stock":true},{"title":"200A","offer_id":57174861644041,"sku":"5187","price":16.99,"currency_code":"GBP","in_stock":true},{"title":"150A","offer_id":57174861676809,"sku":"5185","price":16.99,"currency_code":"GBP","in_stock":true},{"title":"100A","offer_id":57174861709577,"sku":"5183","price":16.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0884\/4253\/6201\/files\/5190_fuse_bf209762-eb9f-4acd-b8c4-7770981b4552.jpg?v=1777480110","url":"https:\/\/titanlithium.co.uk\/pt\/products\/fuse-mrbf-300a","provider":"TITAN Lithium","version":"1.0","type":"link"}