{"product_id":"blue-sea-e-series-single-circuit-battery-switch","title":"Blue Sea E Series Single Circuit Battery Switch","description":"\u003cp\u003eThe Blue Sea Systems E-Series 9003E and 9004E Battery Switch is a heavy-duty marine battery isolation switch designed for inboard petrol and diesel engines. Rated at 350A continuous, it delivers dependable battery isolation for demanding marine electrical systems while remaining ignition protected for safe installation aboard petrol-powered vessels.\u003c\/p\u003e\n\u003cp\u003eConstructed with tin-plated copper 3\/8\" (M10) studs, the switch provides maximum conductivity and excellent corrosion resistance. The extended 7\/8\" (22mm) terminal studs allow multiple cable terminals to be fitted, while the one-piece stud design ensures long-term reliability without loosening.\u003c\/p\u003e\n\u003cp\u003eThe 9004E is equipped with a Alternator Field Disconnect (AFD) providing additional protection for your charging system by safeguarding the alternator's diodes if the battery switch is accidentally turned to the OFF position while the engine is running. Where alternator protection is not required, the AFD terminals can instead be used to connect an LED indicator, allowing the LED to illuminate whenever the battery switch is in any position other than OFF. This provides both increased installation flexibility and a convenient visual indication that the battery system is active.\u003c\/p\u003e\n\u003cp\u003eThe reinforced polycarbonate housing supports both surface and rear panel mounting, and the tactile knob design enables switch position identification by touch. Compatible with Perko and Guest low-amperage battery switch mounting patterns, the E-Series also meets American Boat and Yacht Council (ABYC) battery switch requirements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e350A continuous rating for inboard petrol and diesel engines\u003c\/li\u003e\n\u003cli\u003e45% higher continuous rating than standard battery switches\u003c\/li\u003e\n\u003cli\u003eIgnition protected for installation aboard petrol-powered boats\u003c\/li\u003e\n\u003cli\u003eTin-plated copper terminal studs for superior conductivity and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eAccepts 3\/8\" (M10) ring terminals\u003c\/li\u003e\n\u003cli\u003e7\/8\" (22mm) terminal studs accept multiple cable terminals\u003c\/li\u003e\n\u003cli\u003eOne-piece terminal stud construction prevents loosening\u003c\/li\u003e\n\u003cli\u003eSurface or rear panel mounting options\u003c\/li\u003e\n\u003cli\u003eTactile knob position indicator\u003c\/li\u003e\n\u003cli\u003eInternational legend label\u003c\/li\u003e\n\u003cli\u003eAccepts up to 4\/0 AWG (95mm²) battery cable\u003c\/li\u003e\n\u003cli\u003eFits Perko and Guest low-amperage battery switch hole patterns\u003c\/li\u003e\n\u003cli\u003eReinforced polycarbonate case\u003c\/li\u003e\n\u003cli\u003eCE marked\u003c\/li\u003e\n\u003cli\u003eMeets ABYC battery switch requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable class=\"spec-table\" style=\"width: 100%; border-collapse: collapse; font-family: Roboto, Arial, sans-serif; background: #ffffff; text-align: center;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #f5f5f5;\"\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #ddd; padding: 8px; text-align: center; font-weight: 500;\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eCranking Rating (10 sec)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e2000A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eIntermittent Rating (5 min)\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e600A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eContinuous Rating\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e350A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eMaximum Operating Voltage\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e48V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eTerminal Stud Size\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e3\/8\"-16 (M10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eTerminal Stud Torque\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e140 in-lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eMounting Holes\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eAccepts M6 Screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eCable Size to Meet Ratings\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e4\/0 AWG (95mm²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003eCable Clearance\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #ddd; padding: 8px;\"\u003e28mm (1.10\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Blue Sea","offers":[{"title":"Without AFD","offer_id":63895741464953,"sku":"AF-8-28993","price":73.98,"currency_code":"GBP","in_stock":true},{"title":"With AFD","offer_id":63895741497721,"sku":"AF-8-29004","price":88.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0773\/6151\/2725\/files\/Blue-Sea-E-Series-Single-Circuit-Switch-90033.webp?v=1783326783","url":"https:\/\/marinescene.co.uk\/products\/blue-sea-e-series-single-circuit-battery-switch","provider":"Marine Scene","version":"1.0","type":"link"}