{"title":"Blue Sea Systems","description":"\u003cdiv class=\"codeBlockWrapper_-a7MRw\"\u003e\n\u003cp\u003e\u003cspan\u003eThe standard for marine-grade DC electrical hardware: fuse blocks, battery switches, circuit breakers, bus bars, and ANL\/ATC fuses. Used in nearly every professional van and boat build.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","products":[{"product_id":"blue-sea-5032-st-blade-fuse-block","title":"Blue Sea 5032 ST Blade Fuse Block","description":"\u003ch2\u003eBlue Sea 5032 — ST-Blade Split Bus Fuse Block\u003c\/h2\u003e\u003cp\u003eThe ST-Blade 5032 is the fuse block that appears in nearly every serious van or off-grid build. Distributes 12V DC from your house battery to multiple circuits (fridge, lights, pumps, USB outlets, etc.) with room to grow.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 circuits\u003c\/strong\u003e split-bus configuration — run two independent DC sub-systems from one block\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eST-blade fuse format\u003c\/strong\u003e — standard automotive fuse type, easy to source replacements anywhere\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew terminals\u003c\/strong\u003e for clean, vibration-resistant connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e30A per circuit, 100A per bus\u003c\/strong\u003e — handles everything in a typical house loads panel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper bus bars\u003c\/strong\u003e — corrosion resistant for marine and humid off-grid environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVan and RV 12V house loads distribution\u003c\/li\u003e\n\u003cli\u003eOff-grid cabin DC panel builds\u003c\/li\u003e\n\u003cli\u003eMarine 12V DC systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/lithium-batteries\"\u003eRenogy LiFePO4 batteries\u003c\/a\u003e — direct positive feed from battery positive\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/collections\/charge-controllers\"\u003eRenogy charge controllers\u003c\/a\u003e — wired to the block's main inputs\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNot sure where this fits in your build?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan your complete 12V electrical system in minutes.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785425846404,"sku":"5032","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/54778XL.jpg?v=1776877061"},{"product_id":"blue-sea-5502100-class-t-fuse-block","title":"Blue Sea 5502100 Class T Fuse Block","description":"\u003ch2\u003eBlue Sea 5502100 — Class T Fuse Block 225-400A (with Cover)\u003c\/h2\u003e\u003cp\u003eClass T fuse block for high-current battery protection. If you're installing a 2000W+ inverter, this (or something like it) sits between your battery bank and your inverter's DC input. Required for code-compliant and insurance-compliant builds in most jurisdictions.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e225-400A Class T fuse\u003c\/strong\u003e compatible (fuse sold separately, size to your inverter's peak draw)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear insulating cover\u003c\/strong\u003e — protects against accidental shorts and meets code requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM8 studs\u003c\/strong\u003e for heavy battery cable connections (up to 4\/0 AWG)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper bus\u003c\/strong\u003e — marine-grade corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy You Need One\u003c\/h3\u003e\u003cp\u003eA short on an unfused battery cable can deliver thousands of amps in milliseconds — enough to start a fire or melt wiring before a breaker can trip. Class T fuses are the fastest-acting high-current fuses available. Non-negotiable for any inverter install over 2000W.\u003c\/p\u003e\u003ch3\u003ePairs Well With\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/renogy-pure-sine-wave-inverter-2000w\"\u003eRenogy 2000W \/ 3000W inverters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/jackery-homepower-3600-plus\"\u003eJackery HomePower 3600 Plus\u003c\/a\u003e when building a custom 12V feed\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eNot sure what size inverter you need?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/power-station-size-calculator\"\u003ePower Station Size Calculator\u003c\/a\u003e to get a personalized recommendation in under 2 minutes. Then use the \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan where this Class T fuse fits in your wiring.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785425879172,"sku":"5502100","price":140.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/64355XL.jpg?v=1776877062"},{"product_id":"blue-sea-7748-safetyhub-150-fuse-block","title":"Blue Sea 7748 SafetyHub 150 Fuse Block","description":"\u003ch2\u003eBlue Sea 7748 — SafetyHub 150 Fuse Block\u003c\/h2\u003e\u003cp\u003eThe SafetyHub 150 is a modular, centralized fuse panel that cleans up your DC distribution. Instead of individual inline fuses all over your electrical bay, you run everything through this one panel.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e150A main input\u003c\/strong\u003e fuse protection from the battery bank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 6 output circuits\u003c\/strong\u003e with individual fuse protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMIDI\/ANL, MRBF, and Maxi fuse compatibility\u003c\/strong\u003e across different outputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular expansion\u003c\/strong\u003e — add more blocks as your electrical system grows\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear cover\u003c\/strong\u003e for visual inspection and safety\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVan builds consolidating fridge, inverter, DC-DC charger, and other major 12V loads\u003c\/li\u003e\n\u003cli\u003eRV installations where neat wiring matters\u003c\/li\u003e\n\u003cli\u003eOff-grid cabins with multiple high-current circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your build?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to design your complete electrical system in minutes — including where the SafetyHub sits in your DC distribution.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785425911940,"sku":"7748","price":242.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/40601XL.jpg?v=1776877063"},{"product_id":"blue-sea-3002-battery-switch-hd-selector","title":"Blue Sea 3002 HD Battery Switch","description":"\u003ch2\u003eBlue Sea 3002 — Heavy-Duty Battery Selector Switch\u003c\/h2\u003e\u003cp\u003eClassic four-position battery selector switch for dual-battery van, RV, and marine builds. Manual control over which battery (or both) is powering your loads.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4 positions:\u003c\/strong\u003e OFF \/ Battery 1 \/ Battery 2 \/ Both\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e350A continuous, 700A intermittent rating\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternator field disconnect\u003c\/strong\u003e (optional wiring) protects alternator when switch is turned off\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface mount\u003c\/strong\u003e with red handle for visibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL-recognized\u003c\/strong\u003e and marine-rated\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUse Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-battery van builds:\u003c\/strong\u003e isolate starter battery from house bank when parked\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency kill switch:\u003c\/strong\u003e one-motion shutoff of all DC electrics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService mode:\u003c\/strong\u003e disconnect the entire system when working on wiring\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eDesigning a dual-battery system?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan your starter-plus-house electrical layout, including where the selector switch fits.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785425944708,"sku":"3002","price":166.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/20233XL.jpg?v=1776877064"},{"product_id":"blue-sea-7650-dual-circuit-battery-system","title":"Blue Sea 7650 Dual Circuit Battery System","description":"\u003ch2\u003eBlue Sea 7650 — Solenoid \/ Dual Circuit Battery System\u003c\/h2\u003e\u003cp\u003eAutomatic battery combiner that connects your starter battery to your house battery whenever the engine is running, so your alternator charges both. Disconnects when the engine stops to prevent your house loads from draining the starter battery.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120A continuous, 500A momentary\u003c\/strong\u003e engagement capacity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic voltage-sensing\u003c\/strong\u003e — no manual switching, no user input required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual override switch\u003c\/strong\u003e for emergency starting assist (combine batteries on demand)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated panel\u003c\/strong\u003e with status LEDs\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e12V or 24V systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy This Over a Plain VSR\u003c\/h3\u003e\u003cp\u003eA standard voltage-sensing relay only combines batteries. This system gives you manual override, integrated switching, and status indicators all in one unit. Cleaner install, fewer parts, more control.\u003c\/p\u003e\u003ch3\u003eIdeal For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eVan and RV dual-battery electrical systems\u003c\/li\u003e\n\u003cli\u003eBuilds where you want alternator charging without a full DC-DC charger\u003c\/li\u003e\n\u003cli\u003eBudget-conscious alternative to Victron Cyrix \/ Orion on non-LiFePO4 bank configurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your alternator charging setup?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to lay out your complete dual-battery wiring in minutes.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785425977476,"sku":"7650","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/29766XL.jpg?v=1776877065"},{"product_id":"blue-sea-7713-ml-rbs-remote-battery-switch","title":"Blue Sea 7713 ML-RBS Remote Battery Switch","description":"\u003ch2\u003eBlue Sea 7713 — ML-RBS Remote Battery Switch with Manual Override\u003c\/h2\u003e\u003cp\u003eElectronic remote battery disconnect with a manual override lever. Flip a dashboard switch (or hit the lever) to instantly disconnect your entire DC electrical system. Essential safety component for serious van and RV builds.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e500A continuous, 1500A cranking\u003c\/strong\u003e rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote-activated\u003c\/strong\u003e via a small dashboard switch (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual override lever\u003c\/strong\u003e for emergencies or when you want to cut power fast\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVery low idle current draw\u003c\/strong\u003e (~0.07A) when left engaged\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUL-listed, ignition-protected, marine-rated\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy You'd Want This\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsurance compliance:\u003c\/strong\u003e some insurers require a remote battery disconnect on vehicles with large lithium banks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFire safety:\u003c\/strong\u003e instantly kill the whole electrical system from the cab if something goes wrong\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-term parking:\u003c\/strong\u003e disconnect the battery without popping the hood\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your safety layout?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan where the ML-RBS and its remote switch fit in your electrical system.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785426010244,"sku":"7713","price":408.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/53464XL.jpg?v=1776877066"},{"product_id":"blue-sea-2107-powerbar-8-stud","title":"Blue Sea 2107 PowerBar 8-stud","description":"\u003ch2\u003eBlue Sea 2107 — PowerBar (8 × 3\/8-16 Studs)\u003c\/h2\u003e\u003cp\u003eHeavy-duty DC bus bar for consolidating positive or negative connections in your van, RV, or off-grid electrical system. Clean, professional-grade way to land multiple battery cables on a single distribution point.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e8 × 3\/8-16 threaded studs\u003c\/strong\u003e for secure ring-terminal connections\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e300A continuous rating\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper\u003c\/strong\u003e construction — corrosion resistant\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware included\u003c\/strong\u003e (nuts, lock washers)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact footprint\u003c\/strong\u003e — mounts anywhere there's flat space\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUse Cases\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePositive bus bar:\u003c\/strong\u003e connect battery + to inverter, fuse block, DC-DC charger, and main feeds in one place\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNegative\/ground bus bar:\u003c\/strong\u003e consolidate all DC returns to a single point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShunt jumper:\u003c\/strong\u003e clean cable management around battery monitors\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your cable runs?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to design your complete 12V electrical layout, including bus bar placement.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785426043012,"sku":"2107","price":244.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/20209XL_486f861e-a021-43b2-b65b-03ee58e2ccae.jpg?v=1776877067"},{"product_id":"blue-sea-1991-powerbar-1000-12-stud","title":"Blue Sea 1991 PowerBar 1000","description":"\u003ch2\u003eBlue Sea 1991 — PowerBar 1000 (12 × 3\/8 Studs with Insulating Cover)\u003c\/h2\u003e\u003cp\u003eThe upgrade pick for high-current bus bars in van, RV, and off-grid electrical systems. 1000A continuous rating — enough for the largest LiFePO4 banks and biggest inverter systems you'll ever build.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12 × 3\/8 threaded studs\u003c\/strong\u003e — more landing points than the PowerBar 8-stud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1000A continuous rating\u003c\/strong\u003e — future-proof for system expansion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear insulating cover included\u003c\/strong\u003e — protects against accidental shorts, meets ABYC safety requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTin-plated copper\u003c\/strong\u003e construction\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMounting hardware included\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen to Pick This Over the 2107\u003c\/h3\u003e\u003cp\u003eChoose the PowerBar 1000 if you're running 300A+ of simultaneous load (big inverters, multiple DC chargers, large parallel battery banks) or if you want the insulating cover for code compliance. Overkill for basic builds; exactly right for serious ones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDesigning a high-current system?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan your complete electrical layout — cable sizing, bus bar placement, fuse locations.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785426075780,"sku":"1991","price":331.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/54614XL.jpg?v=1776877068"},{"product_id":"blue-sea-7235-circuit-breaker-15a","title":"Blue Sea 7235 15A Circuit Breaker","description":"\u003ch2\u003eBlue Sea 7235 — 15A AA2 Circuit Breaker (White)\u003c\/h2\u003e\u003cp\u003eSurface-mount thermal circuit breaker with push-button reset. For individual 12V DC circuits that need a resettable breaker instead of a fuse.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e15A rating\u003c\/strong\u003e — suited for lighting, fan, and small device circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-to-reset\u003c\/strong\u003e button — no fuse to replace after a trip\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface-mount\u003c\/strong\u003e with panel-mount option\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMarine-rated, UL-recognized\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite housing\u003c\/strong\u003e — blends with white electrical panels\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen to Use a Circuit Breaker Instead of a Fuse\u003c\/h3\u003e\u003cp\u003eBreakers are reusable after an overload — just push the button. Good for circuits that occasionally trip (e.g., a winch, an air compressor under heavy load) where you don't want to carry spare fuses. Fuses are faster-acting and cheaper; breakers are more convenient.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePlanning your DC panel?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan individual circuit protection.\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-5032-st-blade-fuse-block\"\u003eBlue Sea 5032 ST Blade Fuse Block\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-7748-safetyhub-150-fuse-block\"\u003eBlue Sea 7748 SafetyHub 150 Fuse Block\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/charge-controllers\"\u003eSolar charge controllers (PV input protection)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785458843780,"sku":"7235","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/14602XL.jpg?v=1776879256"},{"product_id":"blue-sea-7238-circuit-breaker-30a","title":"Blue Sea 7238 30A Circuit Breaker","description":"\u003ch2\u003eBlue Sea 7238 — 30A AA2 Circuit Breaker (White)\u003c\/h2\u003e\u003cp\u003e30A surface-mount thermal circuit breaker with push-button reset. Sized for mid-current circuits like 12V compressor fridges, DC-DC chargers, and house lighting trunk lines.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30A rating\u003c\/strong\u003e — fridge circuits, inverter trunk lines (small inverters), DC-DC charger input protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-to-reset\u003c\/strong\u003e button\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSurface-mount\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMarine-rated, UL-recognized\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWhite housing\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your DC panel?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan individual circuit protection.\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-7748-safetyhub-150-fuse-block\"\u003eBlue Sea 7748 SafetyHub 150 Fuse Block\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-20a-dc-dc-battery-charger\"\u003eRenogy 20A DC-DC Battery Charger\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/marinco-303ssel-b-30a-power-inlet\"\u003eMarinco 303SSEL-B 30A Shore Power Inlet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785458974852,"sku":"7238","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/14604XL.jpg?v=1776879258"},{"product_id":"blue-sea-7239-circuit-breaker-40a","title":"Blue Sea 7239 40A Circuit Breaker","description":"\u003ch2\u003eBlue Sea 7239 — 40A AA2 Circuit Breaker (Black)\u003c\/h2\u003e\u003cp\u003e40A surface-mount thermal circuit breaker. Sized for higher-current circuits — DC-DC charger outputs, small inverter trunk lines, large accessory loads.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A rating\u003c\/strong\u003e — 40A DC-DC chargers, small 500W inverters, heavy accessory circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePush-to-reset\u003c\/strong\u003e button\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSurface-mount with panel-mount option\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMarine-rated, UL-recognized\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack housing\u003c\/strong\u003e — matches dark electrical panels\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePlanning your DC panel?\u003c\/strong\u003e Use our free \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan individual circuit protection.\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-7748-safetyhub-150-fuse-block\"\u003eBlue Sea 7748 SafetyHub 150 Fuse Block\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/victron-orion-xs-12-12-50-dc-dc-charger\"\u003eVictron Orion XS 50A DC-DC Charger (40A works for inputs)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-40a-dc-dc-battery-charger-mppt\"\u003eRenogy 40A DC-DC MPPT Charger\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785459007620,"sku":"7239","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/20587XL.jpg?v=1776879260"},{"product_id":"blue-sea-5119-300a-class-t-fuse","title":"Blue Sea 5119 300A Class T Fuse","description":"\u003ch2\u003eBlue Sea 5119 — 300A Class T Fuse (A3T)\u003c\/h2\u003e\u003cp\u003eThe actual replacement fuse for a Class T fuse block. 300A-rated for 2000W-3000W inverter installations.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300A continuous rating\u003c\/strong\u003e — sized for 2500W-3000W inverters at 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass T fuse class\u003c\/strong\u003e — fastest-acting high-current fuse available\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA3T form factor\u003c\/strong\u003e — fits \u003ca href=\"\/products\/blue-sea-5502100-class-t-fuse-block\"\u003eBlue Sea 5502100\u003c\/a\u003e and \u003ca href=\"\/products\/blue-sea-7748-safetyhub-150-fuse-block\"\u003eother Class T blocks\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200,000 AIC (Amp Interrupting Capacity)\u003c\/strong\u003e — highest in the industry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhen You Need This\u003c\/h3\u003e\u003cp\u003eIf you installed the \u003ca href=\"\/products\/blue-sea-5502100-class-t-fuse-block\"\u003eBlue Sea 5502100 Class T block\u003c\/a\u003e on your inverter install, you also need to put an actual fuse in it. The 300A size matches a 2500-3000W inverter at 12V (e.g., Victron Phoenix 12\/1200, Renogy 3000W, MultiPlus 12\/2000).\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-5502100-class-t-fuse-block\"\u003eBlue Sea 5502100 Class T Fuse Block (pair with the fuse)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/inverters\"\u003e2000-3000W inverters (Samlex PST-2000 \/ Xantrex Freedom)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-12v-200ah-lithium-battery-pro-bluetooth\"\u003eRenogy 12V 200Ah LiFePO4 Battery (common bank at this fuse rating)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-100a-300a-busbar\"\u003eRenogy Bus Bar (distribute downstream loads)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help sizing or wiring?\u003c\/strong\u003e Use our \u003ca href=\"\/pages\/power-station-size-calculator\"\u003ePower Calculator\u003c\/a\u003e to size your battery bank, then the \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan the full install.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785459040388,"sku":"5119","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/19026XL.jpg?v=1776879262"},{"product_id":"blue-sea-5121-400a-class-t-fuse","title":"Blue Sea 5121 400A Class T Fuse","description":"\u003ch2\u003eBlue Sea 5121 — 400A Class T Fuse (A3T)\u003c\/h2\u003e\u003cp\u003e400A Class T fuse for large inverter installations — MultiPlus 12\/3000, oversized 3000W+ inverter banks, or builds with significant headroom planned for future expansion.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400A continuous rating\u003c\/strong\u003e — sized for 3500W-4000W inverter installations at 12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass T fuse class\u003c\/strong\u003e — fastest-acting high-current fuse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA3T form factor\u003c\/strong\u003e — fits \u003ca href=\"\/products\/blue-sea-5502100-class-t-fuse-block\"\u003eBlue Sea 5502100\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e200,000 AIC\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhich Fuse Size Do You Need?\u003c\/h3\u003e\u003cp\u003eRule of thumb: inverter continuous watts × 1.5 ÷ 12V = minimum fuse amperage. So:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2000W inverter → 250A fuse\u003c\/li\u003e\n\u003cli\u003e3000W inverter → 375A fuse (use 400A or 300A depending on install margin)\u003c\/li\u003e\n\u003cli\u003e3600W+ inverter → 400A fuse\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhen in doubt, size up. A larger fuse will still protect the cable if properly matched to cable ampacity.\u003c\/p\u003e\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/blue-sea-5502100-class-t-fuse-block\"\u003eBlue Sea 5502100 Class T Fuse Block\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/inverters\"\u003e3000W+ inverters (Samlex PST-3000 \/ Xantrex Freedom SW3012)\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-12v-300ah-mini-lithium-battery\"\u003eRenogy 12V 300Ah Mini Lithium Battery\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/renogy-100a-300a-busbar\"\u003eRenogy Bus Bar (high-current distribution)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNeed help sizing or wiring?\u003c\/strong\u003e Use our \u003ca href=\"\/pages\/power-station-size-calculator\"\u003ePower Calculator\u003c\/a\u003e to size your battery bank, then the \u003ca href=\"\/pages\/system-build-helper\"\u003eSystem Build Helper\u003c\/a\u003e to plan the full install.\u003c\/p\u003e","brand":"Blue Sea Systems","offers":[{"title":"Default Title","offer_id":51785459073156,"sku":"5121","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/19028XL.jpg?v=1776879265"}],"url":"https:\/\/trailvault.co\/collections\/blue-sea-systems.oembed","provider":"TrailVault","version":"1.0","type":"link"}