{"product_id":"blue-sea-systems-battery-terminal-fuse-40a-ignition-protected-clear-inspection-window","title":"Blue Sea Systems Battery Terminal Fuse 40A — Ignition-Protected, Clear Inspection Window","description":"\u003cp\u003e\u003cstrong\u003eBlue Sea Systems 5176 is a 40A, ignition-protected battery terminal fuse designed to provide high-interrupt protection for large DC battery banks when used with the appropriate terminal fuse block.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact terminal fuse replaces a direct battery terminal connection and delivers a visible, serviceable overcurrent safeguard for marine and mobile electrical systems. Engineered to meet ABYC interrupt requirements, the 5176 combines a high fault-clearing capacity with a clear inspection window and ignition protection, making it suitable for gasoline-powered boats and other transport applications when installed on an approved fuse block.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the 5176 protect my boat's DC main circuits?\u003c\/h3\u003e\n\u003cp\u003eThe 5176 provides a 40 amp-rated point of overcurrent protection with a very high interrupt capability, so large battery banks are protected against sudden short circuits. Its construction allows the fuse to clear heavy faults safely while satisfying recognized marine industry standards.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRated amperage: 40A for continuous circuit protection\u003c\/li\u003e\n  \u003cli\u003eInterrupt rating: 10,000 AIC at 14V DC to handle high fault currents\u003c\/li\u003e\n  \u003cli\u003eMeets ABYC requirements for DC main circuit protection on larger banks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I install the 5176 directly to a battery terminal?\u003c\/h3\u003e\n\u003cp\u003eNo — the 5176 is intended for use only with specified terminal fuse blocks. Mounting the fuse directly to a battery post is not recommended or supported. Using the correct block ensures proper clamping, insulation, and mechanical security.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequired blocks: Terminal Fuse Blocks PN 5191 or PN 2151\u003c\/li\u003e\n  \u003cli\u003ePrevents loose connections and maintains ignition protection when correctly installed\u003c\/li\u003e\n  \u003cli\u003eImproves access for inspection and replacement through proper block placement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat features help me inspect and maintain the fuse?\u003c\/h3\u003e\n\u003cp\u003eThe 5176 includes a clear inspection window so you can quickly confirm whether the element has opened, without removing the assembly. Its ignition-protected design and compact footprint make visual checks and swaps straightforward during routine maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eClear window: instant visual indication of blown condition\u003c\/li\u003e\n  \u003cli\u003eIgnition protected: safe for use aboard gasoline-powered craft when installed per instructions\u003c\/li\u003e\n  \u003cli\u003eCompact dimensions: 8.128 cm L x 3.81 cm W x 2.032 cm H for minimal space usage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the electrical limits and safety considerations?\u003c\/h3\u003e\n\u003cp\u003eThe fuse is designed to interrupt large DC fault currents while carrying its 40A rating under normal operation. Installers should follow manufacturer guidance and ABYC recommendations, including correct block selection and secure mounting, to maintain system safety.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eContinuous rating: 40 amps\u003c\/li\u003e\n  \u003cli\u003eFault clearing: 10,000 AIC at 14V DC meets ABYC limits for main circuits\u003c\/li\u003e\n  \u003cli\u003eUse only with compatible terminal fuse blocks and proper battery wiring practices\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Blue Sea Systems 5176 40A terminal fuse is aimed at boat owners, marine electricians, and mobile power installers who require a high-interrupt, visible fuse solution for large DC battery banks. If you need a compact, ignition-protected fuse that satisfies ABYC interrupt requirements and works with Blue Sea terminal fuse blocks PN 5191 or PN 2151, this part is a practical choice. It’s ideal when space is limited but a reliable, serviceable main-circuit protection device is essential for safe battery system operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 5176 fuse ignition protected?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. When installed on an approved terminal fuse block, the 5176 is ignition protected for use aboard gasoline-powered boats.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What fuse block do I need for the 5176?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use Blue Sea Terminal Fuse Blocks PN 5191 or PN 2151; do not mount the fuse directly to the battery terminal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":55164540748119,"sku":"B0016HTXAY","price":31.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/blue-sea-systems-5176-front-view.jpg?v=1790353452","url":"https:\/\/britishgarage.co.uk\/products\/blue-sea-systems-battery-terminal-fuse-40a-ignition-protected-clear-inspection-window","provider":"British Garage","version":"1.0","type":"link"}