{"product_id":"blue-sea-switch-hd-single-battery-on-off-with-afd","title":"Blue Sea 600A HD-Series Heavy Duty On\/Off Battery Switch w\/ AFD","description":"\u003ch2\u003eBlue Sea Systems HD-Series: High-Current Battery Isolation with AFD\u003c\/h2\u003e \u003ch3\u003eReliable Power Management for 12V and 24V Systems\u003c\/h3\u003e \u003cp\u003eThe \u003cstrong\u003eBlue Sea 600A HD-Series Battery Switch\u003c\/strong\u003e is engineered for high-demand electrical systems found in large marine vessels, RVs, and off-grid setups. Designed to manage \u003cstrong\u003ehigh-amperage battery banks\u003c\/strong\u003e, this switch allows you to toggle a single battery bank to a single load group with confidence. Its ignition-protected design makes it safe for installation in gasoline engine rooms, while the robust construction ensures longevity in harsh marine and automotive environments.\u003c\/p\u003e  \u003ch3\u003eProtect Your Charging System with AFD\u003c\/h3\u003e \u003cp\u003eA key feature of this model is the \u003cstrong\u003eAlternator Field Disconnect (AFD)\u003c\/strong\u003e. In the event the battery switch is accidentally turned to the 'OFF' position while the engine is running, the AFD interrupts the alternator field current before the main circuit is broken. This prevents voltage spikes that can destroy the diodes in your alternator, saving you from costly repairs and electrical downtime compared to standard isolation switches.\u003c\/p\u003e  \u003ch3\u003eBuilt for Heavy-Duty Applications\u003c\/h3\u003e \u003cp\u003eCapable of handling continuous loads of \u003cstrong\u003e600A\u003c\/strong\u003e (when wired with adequate cabling), this switch is ideal for diesel engines and systems with significant power draws. The \u003cstrong\u003e1\/2\" (approx. M12) tinned copper studs\u003c\/strong\u003e provide maximum conductivity and corrosion resistance, accepting large battery cables equipped with heavy-duty lugs. The versatile case design offers flexibility, supporting both surface mounting and rear panel installation to suit your specific layout.\u003c\/p\u003e  \u003cul\u003e \u003cli\u003e \u003cstrong\u003eHigh Current Rating:\u003c\/strong\u003e Handles 600A continuous and 1750A cranking (30 sec), ideal for heavy diesel starting loads.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eAlternator Protection:\u003c\/strong\u003e Integrated AFD safeguards your alternator diodes during accidental switching.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eIgnition Protected:\u003c\/strong\u003e Safe for use on gasoline-powered boats and within engine compartments (SAE J1171).\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFlexible Connection:\u003c\/strong\u003e Accepts two 4\/0 AWG (approx. 120mm²) cables per terminal to meet maximum current ratings.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Fits standard panel cutouts or surface mounts with 1\/4\" (approx. M6) hardware.\u003c\/li\u003e \u003c\/ul\u003e  \u003ch3\u003eApplications and Compatibility\u003c\/h3\u003e \u003cp\u003eThis \u003cstrong\u003emaster battery switch\u003c\/strong\u003e is perfectly suited for managing main power in boats, camper trailers, and 4x4 setups running 12V or 24V systems (Rated up to 32V DC). Whether you are upgrading your \u003cstrong\u003emarine electrical system\u003c\/strong\u003e or building a robust dual-battery setup for an RV, the HD-Series provides the safety and reliability required for professional-grade installations.\u003c\/p\u003e  \u003cp\u003e\u003cstrong\u003eSecure your electrical system today.\u003c\/strong\u003e Equip your vessel or vehicle with the Blue Sea HD-Series Switch for safe, heavy-duty isolation.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":55056830890323,"sku":"BS-3001B","price":96.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/blue-sea-hd-series-switch-front-BS-3001B.webp?v=1790336368","url":"https:\/\/progradewarehouse.com\/products\/blue-sea-switch-hd-single-battery-on-off-with-afd","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}