{"product_id":"blue-sea-40a-a-series-single-pole-toggle-circuit-breaker-white","title":"Blue Sea 40A A-Series Single Pole Toggle Circuit Breaker - White","description":"\u003ch2\u003eReliable Magnetic Hydraulic Circuit Protection and Switching for Marine and Off-Grid Panels\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBlue Sea A Series Circuit Breaker, Double Pole\u003c\/strong\u003e is an industry-standard solution engineered to combine dependable switching and precise overcurrent protection into a single, compact device. Designed specifically for demanding marine, RV, and off-grid electrical panels, this \u003cstrong\u003e40A double pole circuit breaker\u003c\/strong\u003e is widely selected by electrical installers and system builders for AC main circuit protection and high-demand distribution applications.\u003c\/p\u003e\u003cp\u003eBy integrating both functions, it eliminates the need for separate switches and fuse holders, streamlining your switchboard layout and reducing potential points of failure in critical wiring systems. Please note that while the actuator is marked for 40A, the supplied technical specifications do not explicitly state the operational voltage ratings, so always verify the marked ratings on the breaker housing against your specific system requirements prior to installation.\u003c\/p\u003e\u003ch3\u003eWhy Choose a Magnetic Hydraulic Design?\u003c\/h3\u003e\u003cp\u003eUnlike standard thermal breakers that rely on heat to trigger a response, a \u003cstrong\u003emagnetic hydraulic circuit breaker\u003c\/strong\u003e operates using a current-sensing coil and a mechanically damped hydraulic core. This advanced internal mechanism ensures that the trip point remains largely unaffected by ambient temperature fluctuations.\u003c\/p\u003e\u003cp\u003eIn Australian conditions, where engine bays, boat cabins, and caravan electrical lockers regularly experience extreme heat, standard thermal units can suffer from nuisance tripping at currents well below their rated capacity. Conversely, in cold environments, they may take too long to trip. The magnetic hydraulic architecture solves this problem by responding strictly to actual current draw, providing consistent, reliable overcurrent protection regardless of the surrounding climate.\u003c\/p\u003e\u003ch3\u003eDual-Pole Safety and Trip-Free Fault Response\u003c\/h3\u003e\u003cp\u003eIn marine AC shore power systems, inverter outputs, and isolated power grids, safety regulations and best practices often require breaking both the active (hot) and neutral conductors simultaneously. This \u003cstrong\u003edouble pole toggle breaker\u003c\/strong\u003e achieves this via an internally linked mechanism. If an overload occurs on either line, both poles trip immediately, ensuring complete isolation of downstream appliances and significantly reducing the risk of shock hazards caused by reverse polarity or fault currents on the neutral line.\u003c\/p\u003e\u003cp\u003eFurthermore, the unit incorporates a specialised \u003cstrong\u003etrip-free design\u003c\/strong\u003e. This vital safety feature ensures that the internal contacts cannot be manually held in the ON position while a fault current condition exists. Even if the white toggle switch is physically restrained, the internal mechanism will release and interrupt the circuit, protecting your cabling and equipment from severe thermal damage.\u003c\/p\u003e\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e40A Double-Pole Configuration:\u003c\/strong\u003e Simultaneously breaks two poles (such as AC active and neutral) for comprehensive circuit isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombined Switching and Protection:\u003c\/strong\u003e Acts as both a heavy-duty master switch and an overcurrent protector, saving valuable panel space.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature-Stable Operation:\u003c\/strong\u003e Magnetic hydraulic mechanism resists nuisance tripping in hot engine rooms or enclosed battery canopies.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip-Free Safety Mechanism:\u003c\/strong\u003e Cannot be forced to remain closed during an active electrical fault, mitigating fire and equipment risks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel-Ready Construction:\u003c\/strong\u003e Features an ergonomic white toggle actuator with high-visibility markings and threaded brass mounting inserts for secure switchboard integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Marine \u0026amp; Industrial Compliance:\u003c\/strong\u003e Meets strict ABYC standards, is UL 1077 recognised, TUV certified, CE marked for Europe, and CSA certified for Canada.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEngineered for Harsh Environments\u003c\/h3\u003e\u003cp\u003eEvery component of the Blue Sea Systems A-Series range is built to withstand the rigours of mobile and marine environments. The durable housing houses robust internal contacts, while the front face features threaded brass inserts for secure panel mounting that resists vibration and mechanical stress. With clear OFF and amperage markings on the white toggle switch, system status can be identified at a glance in dimly lit cabins or utility bays.\u003c\/p\u003e\u003ch3\u003eUpgrade Your Electrical Panel Protection\u003c\/h3\u003e\u003cp\u003eEnsure your AC main distribution or heavy-duty off-grid circuits are protected by proven, standards-compliant hardware. Add the \u003cstrong\u003eBlue Sea A Series Double Pole 40A Circuit Breaker\u003c\/strong\u003e to your build today for safe, integrated switching and fault protection.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631608954941,"sku":"BS-7226B","price":32.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-a-series-double-pole-circuit-breaker-40a-bs-7226b.png?v=1792904952","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-40a-a-series-single-pole-toggle-circuit-breaker-white","provider":"Solar 4 RVs","version":"1.0","type":"link"}