{"product_id":"blue-sea-m-series-battery-switch-spare-knob-black","title":"Blue Sea M-Series Battery Switch Spare Knob - Black","description":"\u003ch2\u003eGenuine OEM Replacement Control for M-Series Marine and Automotive Isolators\u003c\/h2\u003e\u003cp\u003eMaintain the integrity and safety of your DC power distribution system with the genuine Blue Sea Systems M-Series Battery Switch Spare Knob in black. Over time, heavy usage, accidental impacts, or prolonged exposure to harsh marine and off-grid environments can result in damaged, worn, or misplaced switch selectors. Rather than undertaking the costly and time-consuming task of rewiring and replacing an entire battery isolator, this genuine spare part allows you to quickly restore full mechanical functionality to your existing switch body.\u003c\/p\u003e\u003ch3\u003eEngineered for Precision and High Visibility\u003c\/h3\u003e\u003cp\u003eDesigned specifically to match the exact tolerances of the Blue Sea Systems M-Series range, this replacement control ensures a secure, slip-free engagement with the internal switch shaft. Unbranded or makeshift alternatives often suffer from poor fitment, which can lead to inaccurate switching positions, stripped splines, or complete failure when trying to isolate a battery bank in an emergency. This genuine component eliminates that risk, providing positive tactile feedback and reliable actuation every time you turn the dial.\u003c\/p\u003e\u003cp\u003eThe knob features a contoured, ergonomic grip profile that allows for effortless operation, even when wearing heavy work gloves or operating in wet marine conditions. A high-visibility white pointer and the distinctive M-Series logo are integrated into the face, offering clear visual confirmation of your current battery status in low-light lockers, boat bilges, or compact caravan electrical cabinets.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM Fitment:\u003c\/strong\u003e Engineered specifically for seamless compatibility with Blue Sea Systems M-Series mini battery switches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eErgonomic Grip Design:\u003c\/strong\u003e Deeply contoured edges provide superior leverage and slip resistance in wet or cramped environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Contrast Indicator:\u003c\/strong\u003e Features a bright white directional pointer against a matte black finish for immediate visual verification of switch positions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost-Effective Maintenance:\u003c\/strong\u003e Restores full operation to your existing battery isolator without disturbing heavy-gauge cabling or mounting hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour-Coding Flexibility:\u003c\/strong\u003e Ideal for replacing a broken black dial or converting a standard red M-Series switch to black for sleek dash aesthetics or specific circuit identification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImportant Note:\u003c\/strong\u003e This product includes the replacement control knob only; the complete M-Series battery switch body is not included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVersatile Applications in 12V, 24V, and 48V Systems\u003c\/h3\u003e\u003cp\u003eWhether you are managing a dual-battery setup in a touring 4WD, maintaining house and start banks on a marine vessel, or organising a custom caravan power board, keeping spares on hand is essential for uninterrupted operation. Because the M-Series switch family is widely utilised across 12V, 24V, and 48V DC electrical architectures, this spare selector is an invaluable addition to any onboard toolkit. Additionally, many removable-knob M-Series switches utilise the selector as a security deterrent; keeping a backup stored safely onboard ensures you are never stranded due to a misplaced key knob.\u003c\/p\u003e\u003ch3\u003eRestore Your Battery Switch Today\u003c\/h3\u003e\u003cp\u003eEnsure your electrical isolation system remains safe, functional, and easy to operate. Order the genuine Blue Sea M-Series Spare Knob today to complete your system maintenance or equip your onboard spares kit for your next marine or off-grid adventure.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631720333373,"sku":"BS-7901200","price":10.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-m-series-battery-switch-spare-knob-black-bs-7901200.jpg?v=1792905705","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-m-series-battery-switch-spare-knob-black","provider":"Solar 4 RVs","version":"1.0","type":"link"}