{"product_id":"egis-175a-mrbf-terminal-fuse-58v-dc-marine-rated","title":"Egis 175A MRBF Terminal Fuse, 58V DC Marine Rated","description":"\u003cp class=\"nvn-hero\"\u003eThe Egis Mobile Electric 175A MRBF terminal fuse gives you compact, high-current battery protection right at the source. Rated to 58V DC, it covers 12V through 48V systems and carries an IP66 weather rating, so it holds up in an engine bay or a wet battery box. It's the fuse that guards your main DC feeds without eating up panel space.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Egis Mobile Electric 175A MRBF terminal fuse is the kind of part that does a big job from a small footprint. MRBF stands for Marine Rated Battery Fuse, and the idea behind it is simple. You put the fuse right at the battery or the bus bar, so the wire leaving your bank is protected from the very first inch. If a cable ever chafes through or a downstream device shorts out, this fuse opens before that wire can turn into a heat source.\u003c\/p\u003e\n\u003cp\u003eIt's rated to 58 volts DC, which sounds oddly specific until you see what it covers. That rating easily handles 12V, 24V, 36V, and 48V nominal systems. So whether you're running a traditional 12-volt house bank or a 48-volt lithium setup feeding a big inverter, the same fuse family has you covered. That's one less thing to second-guess when you're speccing out a build.\u003c\/p\u003e\n\u003cp\u003eThe 175-amp rating puts this one squarely in main-feed territory. Think DC mains, inverter feeds, windlass circuits, and bow thruster runs. Those are the loads that pull serious current and need protection sized to the wire carrying them. A 175A MRBF fuse pairs with cable rated to carry that current, and by ABYC practice you want the fuse guarding that conductor on close to a one-to-one basis. Size the fuse to the cable, not to the load's peak draw, and you'll sleep better at anchor.\u003c\/p\u003e\n\u003cp\u003eMounting is where the MRBF format earns its keep. It uses an isolated stud design that bolts straight to a battery terminal or onto a dedicated MRBF terminal fuse block. No inline holder dangling off your positive cable, no bulky enclosure stealing space in the battery box. Run it in a proper MRBF fuse block and the assembly is ignition protected, which matters in any compartment that could ever see fuel vapor.\u003c\/p\u003e\n\u003cp\u003eWhat does IP66 actually mean out on the water? The first six says the fuse is fully dust-tight, so nothing works its way in. The second six says it shrugs off powerful water jets from any direction. In real terms, that's a fuse you can mount in an engine bay, under a cockpit sole, or in a lazarette that takes the odd bit of spray, and it keeps right on doing its job. Corrosion is what kills marine electrical connections, so a sealed, weather-rated fuse at the battery is money well spent.\u003c\/p\u003e\n\u003cp\u003eHere's the honest part on what you're actually buying. This is a single 175-amp fuse, not a kit. It doesn't include a fuse block or mounting hardware, so if you don't already have an MRBF block or a suitable battery stud, you'll want to grab one separately. Buying the fuse on its own is exactly right when you're replacing a blown one or building up a stash of spares. Plenty of boaters keep two or three of the right amperage tucked into the spares kit, right next to the crimps and heat shrink.\u003c\/p\u003e\n\u003cp\u003eA quick word on those spares. A fuse only interrupts once. When it opens, you replace it, so having the exact amperage on hand means a blown main doesn't strand you. Match the replacement to the original rating and the wire gauge every time. Dropping in a higher-amp fuse to stop nuisance trips defeats the whole point and puts your wiring at risk. It's never worth it.\u003c\/p\u003e\n\u003cp\u003eEgis Mobile Electric has been building vehicle and marine electrical gear for more than 25 years, and battery protection is right in their wheelhouse. This fuse is backed by the manufacturer's warranty, so you're not gambling on an unknown. Fuse it once, do it right, and forget about it. That's the whole point of protecting a circuit at the source, and it's why MRBF terminal fuses have become a default for clean, compact DC main protection on modern boats.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e175-amp rating sized for DC mains, inverter feeds, windlass, and bow thruster circuits\u003c\/li\u003e\n  \u003cli\u003e58V DC max rating covers 12V, 24V, 36V, and 48V nominal systems\u003c\/li\u003e\n  \u003cli\u003eMRBF (Marine Rated Battery Fuse) format mounts right at the battery or on a terminal fuse block\u003c\/li\u003e\n  \u003cli\u003eIsolated stud design keeps the fuse compact with no bulky inline holder\u003c\/li\u003e\n  \u003cli\u003eIP66 protection rating seals out dust and withstands heavy water spray\u003c\/li\u003e\n  \u003cli\u003eIgnition protected when installed in an MRBF terminal fuse block, safe for engine and fuel-vapor compartments\u003c\/li\u003e\n  \u003cli\u003eSingle fuse, easy to keep on board as a spare or a direct replacement\u003c\/li\u003e\n  \u003cli\u003eBacked by Egis Mobile Electric's manufacturer warranty and 25-plus years of electrical engineering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Egis Mobile Electric reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does MRBF stand for?\u003c\/summary\u003e\n    \u003cp\u003eMRBF means Marine Rated Battery Fuse. It's a compact fuse format designed to mount right at the battery or on a dedicated fuse block, so the cable leaving your bank is protected from the first inch.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat systems does the 58V DC rating cover?\u003c\/summary\u003e\n    \u003cp\u003eThe 58 volt DC rating comfortably handles 12V, 24V, 36V, and 48V nominal systems. One fuse family works whether you're on a standard 12-volt bank or a 48-volt lithium setup.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat circuits is a 175-amp fuse right for?\u003c\/summary\u003e\n    \u003cp\u003e175 amps lands in main-feed territory. It's a common choice for DC mains, inverter feeds, windlass circuits, and bow thruster runs. Always size the fuse to protect the wire, following ABYC practice.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow does this fuse mount?\u003c\/summary\u003e\n    \u003cp\u003eMRBF fuses use an isolated stud design that bolts directly to a battery terminal or onto an MRBF terminal fuse block. There's no bulky inline holder to find room for.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it ignition protected?\u003c\/summary\u003e\n    \u003cp\u003eWhen it's installed in a proper MRBF terminal fuse block, the assembly is ignition protected, which makes it suitable for engine compartments and other spaces that could see fuel vapor.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the IP66 rating mean?\u003c\/summary\u003e\n    \u003cp\u003eIP66 means the fuse is fully dust-tight and can take powerful water jets from any direction. In practice, it holds up in a wet bilge, engine bay, or battery box that occasionally sees spray.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this include a fuse block?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is a single 175-amp fuse only. It doesn't come with a fuse block or mounting hardware, so you'll need an MRBF block or a suitable battery stud to install it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I size the fuse to my wire?\u003c\/summary\u003e\n    \u003cp\u003eBy ABYC practice, the fuse should protect the conductor on close to a one-to-one basis. Match the amperage to what your cable can safely carry rather than to the load's peak draw.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I keep a spare on board?\u003c\/summary\u003e\n    \u003cp\u003eIt's a good idea. A fuse only interrupts once, so keeping the exact 175-amp rating on board means a blown main doesn't end your day. Always replace with the same rating.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eEgis Mobile Electric MRBF Terminal Fuse, 175 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eEgis Mobile Electric\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e3603-175\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e850053879647\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eTerminal Fuse\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFuse Type\u003c\/th\u003e\n\u003ctd\u003eMRBF (Marine Rated Battery Fuse)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAmperage Rating\u003c\/th\u003e\n\u003ctd\u003e175 Amp\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003e58 Volt DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible System Voltage\u003c\/th\u003e\n\u003ctd\u003e12V to 48V nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProtection Rating\u003c\/th\u003e\n\u003ctd\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e4-Year Limited\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does MRBF stand for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"MRBF means Marine Rated Battery Fuse. It's a compact fuse format designed to mount right at the battery or on a dedicated fuse block, so the cable leaving your bank is protected from the first inch.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What systems does the 58V DC rating cover?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The 58 volt DC rating comfortably handles 12V, 24V, 36V, and 48V nominal systems. One fuse family works whether you're on a standard 12-volt bank or a 48-volt lithium setup.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What circuits is a 175-amp fuse right for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"175 amps lands in main-feed territory. It's a common choice for DC mains, inverter feeds, windlass circuits, and bow thruster runs. Always size the fuse to protect the wire, following ABYC practice.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How does this fuse mount?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"MRBF fuses use an isolated stud design that bolts directly to a battery terminal or onto an MRBF terminal fuse block. There's no bulky inline holder to find room for.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it ignition protected?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"When it's installed in a proper MRBF terminal fuse block, the assembly is ignition protected, which makes it suitable for engine compartments and other spaces that could see fuel vapor.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the IP66 rating mean?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"IP66 means the fuse is fully dust-tight and can take powerful water jets from any direction. In practice, it holds up in a wet bilge, engine bay, or battery box that occasionally sees spray.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this include a fuse block?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This is a single 175-amp fuse only. It doesn't come with a fuse block or mounting hardware, so you'll need an MRBF block or a suitable battery stud to install it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I size the fuse to my wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"By ABYC practice, the fuse should protect the conductor on close to a one-to-one basis. 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