{"product_id":"blue-sea-200a-187-series-panel-mount-thermal-circuit-breaker","title":"Blue Sea 200A 187-Series Panel Mount Thermal Circuit Breaker","description":"\u003ch2\u003eHeavy-Duty 200A DC Circuit Protection and Manual Switching\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBlue Sea 187-Series 200A Panel Mount Thermal Circuit Breaker\u003c\/strong\u003e delivers dual-purpose functionality by combining high-amperage overcurrent protection with manual switching in a single, compact unit. Engineered specifically for demanding marine, RV, caravan, and off-grid electrical systems, this breaker simplifies your switchboard layout by eliminating the need for separate master switches and inline fuses on primary DC circuits.\u003c\/p\u003e\u003cp\u003eDesigned to meet stringent safety standards, its SAE J1171 ignition-protected construction ensures safe installation aboard petrol-powered vessels and within enclosed battery or engine compartments. Whether you are protecting heavy-duty windlasses, high-output alternators, inverters, or main battery busbars, this 187-Series breaker provides reliable thermal response against dangerous electrical overloads and short circuits.\u003c\/p\u003e\u003ch3\u003eEngineered for Safety and High-Current Reliability\u003c\/h3\u003e\u003cp\u003eUnlike standard unbranded breakers that can suffer from voltage drop, nuisance tripping, or thermal failure under sustained loads, the Blue Sea 187-Series is built for long-term durability in harsh Australian conditions. It features a mechanical \u003cstrong\u003etrip-free design\u003c\/strong\u003e, meaning the internal contacts cannot be manually held in the closed (ON) position while a fault current is present. This critical safety mechanism reduces the risk of wire insulation melting or electrical fires during an unresolved short circuit.\u003c\/p\u003e\u003cp\u003eThe high-visibility yellow manual reset lever provides immediate visual confirmation of your circuit status, with clearly marked ON, OFF\/TRIP, and RESET positions. For flexibility across custom dashboards and power distribution panels, the lever can be oriented for either vertical or horizontal operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Functionality:\u003c\/strong\u003e Combines reliable 200A thermal overcurrent protection and manual ON\/OFF circuit isolation in one device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSAE J1171 Ignition Protected:\u003c\/strong\u003e Safe for installation in petrol engine compartments and marine bilge areas without risking vapour ignition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip-Free Safety Mechanism:\u003c\/strong\u003e Prevents the actuator from being forced or held ON during an active electrical fault.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Gauge Cable Support:\u003c\/strong\u003e Equipped with robust 5\/16\" (Approx. M8) terminal studs and generous housing clearance to accommodate heavy-duty cable lugs and high-torque connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Panel Integration:\u003c\/strong\u003e Recessed mounting holes allow for a neat, flush finish on custom marine dashboards, 4WD canopies, and caravan electrical panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeatherproof Construction:\u003c\/strong\u003e Sealed against moisture and salt spray ingress to ensure dependable operation in coastal and off-road environments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplication Guidelines and Installation\u003c\/h3\u003e\u003cp\u003eThis panel-mount circuit breaker is ideal for primary DC power distribution, battery bank isolation, and high-draw auxiliary equipment. The robust 5\/16\" (Approx. M8) studs ensure low-resistance connections when paired with appropriately sized heavy-gauge battery cables.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eImportant Application Note:\u003c\/em\u003e Do not use this thermal circuit breaker as a frequent manual switch where high inrush currents are expected, as repeated switching under heavy surge loads can degrade the internal contact surfaces over time.\u003c\/p\u003e\u003ch3\u003eUpgrade Your Primary Circuit Protection\u003c\/h3\u003e\u003cp\u003eSecure your marine vessel, caravan, or off-grid power system with industry-standard circuit protection. Add the Blue Sea 187-Series 200A Panel Mount Thermal Circuit Breaker to your build today for safe, compliant, and streamlined DC power management.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631580414013,"sku":"BS-7049B","price":218.28,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-187-series-200a-circuit-breaker-bs-7049b.png?v=1792904275","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-200a-187-series-panel-mount-thermal-circuit-breaker","provider":"Solar 4 RVs","version":"1.0","type":"link"}