{"product_id":"blue-sea-120a-285-series-surface-mount-thermal-circuit-breaker","title":"Blue Sea 120A 285-Series Surface Mount Thermal Circuit Breaker","description":"\u003ch2\u003eHeavy-Duty 120A DC Circuit Protection and Manual Disconnect\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBlue Sea 285-Series 120A Surface Mount Thermal Circuit Breaker\u003c\/strong\u003e delivers dependable overcurrent protection and manual switching in a single, compact unit. Engineered for demanding mobile, marine, and off-grid electrical architectures, this \u003cstrong\u003e120A circuit breaker\u003c\/strong\u003e safeguards high-current wiring and appliances from thermal overload and short circuits. By combining switching and protection functions, it eliminates the need for separate fuse holders and isolation switches, streamlining your system layout and reducing potential failure points.\u003c\/p\u003e\u003ch3\u003eEngineered for Harsh Marine and Automotive Environments\u003c\/h3\u003e\u003cp\u003eWhen working with volatile fuels or enclosed battery compartments, safety compliance is critical. The 285-Series meets strict \u003cstrong\u003eSAE J1171 external ignition protection requirements\u003c\/strong\u003e, meaning it is designed to prevent internal sparks from igniting surrounding flammable gases. This makes it safe for installation in petrol-powered marine engine rooms, boat bilges, and vented battery enclosures.\u003c\/p\u003e\u003cp\u003eUnlike inferior alternatives that suffer from voltage drop, nuisance tripping, or terminal corrosion in damp environments, Blue Sea Systems builds this breaker for long-term reliability. It features heavy-duty stainless steel connection studs that securely accommodate high-current power cables, while tethered rubber protective caps shield the live terminals from moisture, salt spray, and accidental shorting.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Function Design:\u003c\/strong\u003e Combines heavy-duty 120A thermal overcurrent protection with a manual on\/off switching mechanism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAE J1171 Ignition Protected:\u003c\/strong\u003e Safe for installation aboard petrol-powered boats and near battery banks where explosive gases may accumulate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Visual Status:\u003c\/strong\u003e The high-visibility yellow reset lever clearly indicates a tripped state and allows for quick restoration of power without replacing fuses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManual Trip Button:\u003c\/strong\u003e A recessed red button enables safe, immediate circuit interruption for system maintenance, testing, or emergency shutdowns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Shielding:\u003c\/strong\u003e Integrated tethered rubber boots protect the heavy-duty stainless steel terminal studs from moisture, dust, and debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration-Resistant Mounting:\u003c\/strong\u003e Designed with recessed surface mounting holes for a secure, flush installation on flat panels, firewalls, or bulkheads.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVersatile High-Current Applications\u003c\/h3\u003e\u003cp\u003eWhether you are fitting out a 4WD dual-battery system, upgrading a caravan electrical setup, or rewiring a marine vessel, the \u003cstrong\u003eBlue Sea 285-Series 120A breaker\u003c\/strong\u003e provides robust circuit management. It is ideally suited for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProtecting high-output DC-DC chargers, inverters, and solar charge controllers\u003c\/li\u003e\n\u003cli\u003eSafeguarding windlasses, bow thrusters, and hydraulic pumps in marine vessels\u003c\/li\u003e\n\u003cli\u003eServing as a main battery bank isolator and master fuse in caravans, camper trailers, and RVs\u003c\/li\u003e\n\u003cli\u003eProtecting heavy-duty auxiliary circuits in 4WDs, commercial service vehicles, and off-grid power setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUpgrade Your Circuit Protection\u003c\/h3\u003e\u003cp\u003eEnsure your high-amperage electrical installations remain safe, compliant, and easy to manage. Add the Blue Sea 285-Series 120A Surface Mount Thermal Circuit Breaker to your system today for professional-grade overcurrent protection.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631596732477,"sku":"BS-7188B","price":95.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-285-series-120a-surface-mount-circuit-breaker-bs-7188b.png?v=1792904609","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-120a-285-series-surface-mount-thermal-circuit-breaker","provider":"Solar 4 RVs","version":"1.0","type":"link"}