{"product_id":"blue-sea-mini-switch-battery-m-series-selector-bla","title":"Blue Sea 300A Black Mini m-Series 4 Position (OFF\/1\/2\/1+2) Battery Selector Switch","description":"\u003ch2\u003eCompact High-Current Battery Selection for Dual Bank Systems\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBlue Sea m-Series Battery Switch\u003c\/strong\u003e offers a professional solution for managing two isolated battery banks in marine, RV, and automotive applications. As a \u003cstrong\u003e4-position selector switch\u003c\/strong\u003e, it allows you to draw power from Battery 1, Battery 2, or both simultaneously, while also providing a complete disconnect (OFF) for safety and storage. Engineered for systems requiring high power handling in a small footprint, this switch is ideal for switching battery banks to all loads or combining them for emergency starting.\u003c\/p\u003e\n\u003cp\u003eWhether you are outfitting a small boat with an outboard motor, setting up a dual battery system in a 4WD, or managing power in a camper trailer, the m-Series provides the reliability needed for critical electrical connections. Its compact design solves the problem of limited mounting space without compromising on amperage capacity.\u003c\/p\u003e\n\u003ch3\u003eComplete Control Over Two Battery Banks\u003c\/h3\u003e\n\u003cp\u003eThis \u003cstrong\u003eselector battery switch\u003c\/strong\u003e simplifies power management by allowing you to choose which battery bank powers your engine or house loads. The \"1+2\" position combines both banks, effectively paralleling them to provide extra cranking amps during emergency starting situations or to charge both banks simultaneously from a single charging source. This flexibility is essential for ensuring you always have a backup power source available if your primary starting battery is depleted.\u003c\/p\u003e\n\u003ch3\u003eSafe Switching with Make-Before-Break Technology\u003c\/h3\u003e\n\u003cp\u003eProtecting your vehicle's sensitive electronics and charging components is paramount. This unit features a \u003cstrong\u003emake-before-break contact design\u003c\/strong\u003e, which allows you to switch between battery banks (e.g., from 1 to 2) while the engine is running without interrupting power flow. This feature prevents potentially damaging voltage spikes that can harm alternators and sensitive navigation or communication equipment, ensuring seamless operation during use.\u003c\/p\u003e\n\u003ch3\u003eHigh-Current Performance and Compatibility\u003c\/h3\u003e\n\u003cp\u003eDespite its mini form factor, the m-Series is built to handle significant electrical loads. It is rated for \u003cstrong\u003e300A continuous current\u003c\/strong\u003e, making it suitable for most marine and automotive DC circuits up to 32V. For short bursts, such as engine cranking, it can withstand up to \u003cstrong\u003e900A for 30 seconds\u003c\/strong\u003e. The switch utilises \u003cstrong\u003e3\/8\"-16 (approx. M10) tinned copper studs\u003c\/strong\u003e that provide maximum conductivity and corrosion resistance. These terminals are capable of accepting heavy-duty ring terminals and cables up to \u003cstrong\u003e4\/0 AWG (approx. 120mm²)\u003c\/strong\u003e, ensuring minimal voltage drop even in high-demand setups.\u003c\/p\u003e\n\u003ch3\u003eFlexible Installation Options\u003c\/h3\u003e\n\u003cp\u003eInstallation in tight spaces is made easier with versatile mounting configurations. The switch can be surface mounted, front panel mounted, or rear panel mounted, accommodating various dashboard and locker layouts. It fits standard mounting holes (accepts #10 screws or approx. M5) and includes a snap-on rear cover to insulate terminals, adding an extra layer of safety against accidental short circuits.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Position Selector:\u003c\/strong\u003e OFF, 1, 2, and 1+2 for versatile battery management\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Current Rating:\u003c\/strong\u003e 300A continuous, 500A intermittent (5 min), 900A cranking (30 sec)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Protected:\u003c\/strong\u003e Safe for installation aboard petrol-powered boats\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMake-Before-Break:\u003c\/strong\u003e Safely switch between banks without stopping power flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Terminals:\u003c\/strong\u003e 3\/8\"-16 (approx. M10) studs accept up to 4\/0 AWG (approx. 120mm²) cables\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Resistant:\u003c\/strong\u003e IP66 rating ensures durability in damp marine environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReliable Power Management for Your Next Adventure\u003c\/h3\u003e\n\u003cp\u003eEnsure your electrical system is safe, efficient, and versatile with the Blue Sea m-Series Battery Switch. Whether you need to isolate a starting battery or combine banks for a jump start, this switch delivers professional-grade performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSecure your power system today with this industry-leading battery selector switch.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":42037159985213,"sku":"BS-6007200B","price":72.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-mini-m-series-switch-BS-6007200B.png?v=1769645301","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-mini-switch-battery-m-series-selector-bla","provider":"Solar 4 RVs","version":"1.0","type":"link"}