{"product_id":"blue-sea-systems-5139-maxi-fuse-40-amp-blade-fuse-for-marine-dc-circuit-protection","title":"Blue Sea Systems 5139 MAXI Fuse, 40 Amp Blade-Style Fuse","description":"\u003cp\u003eThe Blue Sea Systems 5139 is a 40 Amp MAXI blade-style fuse designed to protect boat wiring circuits from overcurrent damage. Its larger-format blade design handles higher amperage loads than standard ATO\/ATC blade fuses, making it a common choice for higher-draw circuits on a boat's DC electrical system. The fuse uses a through-hole mounting style and features tin-plated connector blades that resist the corrosion common in marine environments, helping maintain a reliable electrical connection over time. A visible indication of blown condition lets you quickly identify a tripped fuse without needing a multimeter, speeding up troubleshooting at the panel. The housing is constructed of a synthetic material sized at 5 x 3 x 1 inches. Each Blue Sea Systems 5139 is rated for 40 Amps maximum current. This fuse is intended for use in circuits calling for a 40 Amp MAXI-size fuse and should be matched to the correct in-line fuse holder and wire gauge for the circuit being protected.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Blue Sea Systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 5139\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 40 Amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuse Style:\u003c\/strong\u003e MAXI Blade-Style\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Through-Hole Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Synthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 5 x 3 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 632085051396\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlown-Fuse Indicator:\u003c\/strong\u003e Visible indication of blown condition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Blades:\u003c\/strong\u003e Tin-plated for corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat amperage is the Blue Sea Systems 5139 fuse rated for?\u003c\/strong\u003e The Blue Sea Systems 5139 is rated for 40 Amps maximum current.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 5139 a standard blade fuse or a larger format?\u003c\/strong\u003e It is a MAXI-style blade fuse, a larger-amperage blade format than standard ATO\/ATC fuses, designed for higher-draw circuits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if the 5139 fuse has blown?\u003c\/strong\u003e The fuse includes a visible indication of blown condition, so you can identify a tripped fuse by sight without testing it with a meter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Blue Sea Systems 5139 made from?\u003c\/strong\u003e The 5139 fuse body is made of synthetic material.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 5139 MAXI fuse?\u003c\/strong\u003e The 5139 measures 5 x 3 x 1 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Blue Sea Systems 5139 fuse weigh?\u003c\/strong\u003e The 5139 weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 5139 fuse mounted?\u003c\/strong\u003e It uses a through-hole mounting type, fitting standard MAXI in-line fuse holders.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the connector blades corrode on a boat?\u003c\/strong\u003e The 5139's connector blades are tin-plated for corrosion resistance, which helps them hold up in a marine electrical environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Blue Sea Systems 5139 fuse?\u003c\/strong\u003e The UPC for the 5139 40 Amp MAXI fuse is 632085051396.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 5139 come with a fuse holder?\u003c\/strong\u003e The 5139 is the fuse itself; a separate MAXI in-line fuse holder sized for the correct wire gauge is needed to install it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat other amperages are available in this MAXI fuse line?\u003c\/strong\u003e The 40 Amp 5139 is part of a MAXI fuse lineup that also includes other amperage ratings for different circuit loads.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":48989502996699,"sku":"BSS-5139","price":5.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/5139.jpg?v=1784507520","url":"https:\/\/www.goodvibesmarina.com\/products\/blue-sea-systems-5139-maxi-fuse-40-amp-blade-fuse-for-marine-dc-circuit-protection","provider":"Good Vibes Marina","version":"1.0","type":"link"}