{"product_id":"blue-sea-50a-50mv-dc-shunt","title":"Blue Sea 50A 50mV DC Shunt","description":"\u003ch2\u003ePrecision DC Current Measurement for Marine and Off-Grid Electrical Systems\u003c\/h2\u003e\n\u003cp\u003eAccurate battery monitoring and load tracking are vital for maintaining the health and efficiency of any off-grid, caravan, or marine power setup. The \u003cstrong\u003eBlue Sea 50A\/50mV DC Shunt\u003c\/strong\u003e is engineered to work seamlessly with compatible analogue and digital DC ammeters, providing a highly calibrated voltage drop to measure real-time current flow. By diverting the heavy main load away from your sensitive dashboard gauges, this external shunt allows you to safely monitor charge and discharge currents without routing thick, high-amperage battery cables directly behind your instrument panel.\u003c\/p\u003e\n\n\u003ch3\u003eEngineered for Safety, Isolation, and Accuracy\u003c\/h3\u003e\n\u003cp\u003eUnlike unbranded alternatives that often lack proper thermal management or mounting security, this Blue Sea Systems component comes complete with an integrated black insulating base. This robust plastic base ensures secure electrical isolation when mounting the shunt onto conductive metal surfaces, bulkheads, or inside compact battery enclosures. It significantly reduces the risk of accidental short circuits while simplifying installation in tight spaces.\u003c\/p\u003e\n\u003cp\u003eAt the heart of the unit is a calibrated metal resistive element set between two heavy-duty brass terminal blocks. As current flows through the main load terminals, the resistive strip generates a proportional millivolt signal (1mV per 1A of current, reaching a 50mV drop at the full 50A rating). Your DC ammeter reads this precise signal via the dedicated sensing terminals, translating it into an accurate amperage reading on your display.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features and Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibrated 50A\/50mV Ratio:\u003c\/strong\u003e Delivers a linear 50mV full-scale signal designed to pair effortlessly with compatible 50mV DC ammeters and battery monitors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Insulating Base:\u003c\/strong\u003e Features a durable black plastic mounting base that provides essential electrical isolation and mechanical stability on any flat surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Brass Load Terminals:\u003c\/strong\u003e Equipped with robust hex bolts to secure main battery or load cables, ensuring low contact resistance and minimal heat build-up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated Sensing Screws:\u003c\/strong\u003e Includes separate Phillips head screws on top of the terminal blocks for quick, secure attachment of small-gauge ammeter voltage sensing leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear Rating Identification:\u003c\/strong\u003e Marked clearly with its electrical specifications for straightforward system verification and meter pairing during installation or maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eContinuous Operation and Thermal Management Guidance\u003c\/h3\u003e\n\u003cp\u003eTo ensure long-term accuracy and prevent excessive thermal drift, it is important to size your shunt appropriately for your expected electrical loads. While this unit is rated for intermittent currents up to 50A, Blue Sea Systems recommends that continuous operation under normal conditions should not exceed two-thirds (66%) of the rated current, which equates to approximately 33A. Adhering to this continuous-use threshold prevents overheating of the resistive element, maintains measurement linearity, and protects surrounding wiring and terminals from heat stress.\u003c\/p\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cp\u003eThis compact current shunt is well suited for a wide variety of low-to-medium amperage DC monitoring tasks across 12V, 24V, and 48V systems (when paired with an appropriately rated meter), including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMonitoring solar charge controller output in caravan, camper trailer, and 4WD dual-battery setups.\u003c\/li\u003e\n\u003cli\u003eTracking specific DC branch circuits, such as refrigeration, lighting, or water pump loads on marine vessels.\u003c\/li\u003e\n\u003cli\u003eReplacing damaged or uncalibrated shunts in existing analogue or digital panel meter installations.\u003c\/li\u003e\n\u003cli\u003eBench testing and DIY electrical diagnostics where safe, isolated current measurement is required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUpgrade Your Electrical Monitoring Setup\u003c\/h3\u003e\n\u003cp\u003eEnsure reliable, safe, and accurate current tracking across your auxiliary power system. Add the Blue Sea 50A\/50mV DC Shunt to your kit today for a professional-grade metering installation.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631794094141,"sku":"BS-9228B","price":89.58,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-50a-50mv-dc-shunt-bs-9228b.png?v=1792904839","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-50a-50mv-dc-shunt","provider":"Solar 4 RVs","version":"1.0","type":"link"}