{"product_id":"fastronix-solutions-3-8-2-post-spst-battery-disconnect-switch-180a-continuous-1000a-peak","title":"Fastronix Solutions 3\/8\" 2-Post SPST Battery Disconnect Switch - 180A Continuous, 1000A Peak","description":"\u003cp\u003e\u003cstrong\u003eFastronix 3\/8\" 2-Post (SPST) Battery Disconnect Switch provides a single, high-current manual shutoff rated for 180A continuous and 1000A intermittent to isolate a vehicle or equipment battery quickly and safely.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Fastronix 3\/8\" 2 Post SPST battery disconnect is a compact, heavy-duty master cut-off designed for automotive, marine, RV, and motorsports applications where a reliable single-point battery isolation is required. Built to accept 3\/8\" stud connections and engineered for high inrush loads, this switch lets you interrupt the entire electrical system with one manual action. It meets common competition and safety needs when a battery is relocated and works well as a long-term storage or service disconnect for vehicles and mobile equipment.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this switch handle high current loads?\u003c\/h3\u003e\n\u003cp\u003eThe switch is specified for 180 amps continuous duty and can tolerate intermittent peaks up to 1000 amps, making it suitable for systems with heavy starter or accessory draw. Its SPST (single pole, single throw) design isolates the entire battery feed when opened, removing power from all downstream circuits.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e180A continuous rating for sustained electrical systems.\u003c\/li\u003e\n  \u003cli\u003e1000A intermittent capability for starter and surge events.\u003c\/li\u003e\n  \u003cli\u003e3\/8\" studs for secure, low-resistance connections.\u003c\/li\u003e\n  \u003cli\u003eSPST configuration isolates the main battery feed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere and how can I mount the switch?\u003c\/h3\u003e\n\u003cp\u003eInstall the switch through a 3\/4\" mounting hole for a tidy panel fit; if surface mounting is needed, pair with the Fastronix 980-000 switch mount to attach using two 1\/4\" fasteners. The compact body and common stud spacing make it straightforward to integrate into dashboards, battery boxes, or custom enclosures.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits directly in a 3\/4\" panel hole for flush mounting.\u003c\/li\u003e\n  \u003cli\u003eUse Fastronix 980-000 mount for surface or bulkhead installations.\u003c\/li\u003e\n  \u003cli\u003eTwo 1\/4\" holes on the mount permit solid mechanical support.\u003c\/li\u003e\n  \u003cli\u003eLow-profile design conserves panel space in cramped installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat electrical safety and protection options are available?\u003c\/h3\u003e\n\u003cp\u003eThe disconnect includes threaded studs for secure terminations and can be combined with Fastronix 404-110 terminal covers to shield the exposed studs from accidental shorting. Using protective covers and correct torque on fasteners reduces corrosion and accidental contact risks, improving long-term reliability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePair with Fastronix 404-110 terminal covers for stud protection.\u003c\/li\u003e\n  \u003cli\u003eThreaded 3\/8\" studs provide strong mechanical and electrical contact.\u003c\/li\u003e\n  \u003cli\u003eSimple manual operation offers a visible, positive open\/closed state.\u003c\/li\u003e\n  \u003cli\u003eRecommended to use proper ring terminals and corrosion protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this switch compliant for motorsports and recreational use?\u003c\/h3\u003e\n\u003cp\u003eThe Fastronix 2-post battery disconnect is commonly used where a single master cutoff is required—NHRA rules often demand an easily accessible disconnect when the battery is relocated. It is also a practical choice for RVs and stored vehicles to prevent battery drain and simplify maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMeets common NHRA requirements for relocated batteries when used as specified.\u003c\/li\u003e\n  \u003cli\u003eConvenient for RVs and trailers as a storage power cut-off.\u003c\/li\u003e\n  \u003cli\u003eManual operation provides quick service and emergency isolation.\u003c\/li\u003e\n  \u003cli\u003eDurable design suited to automotive and recreational environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Technicians, hobbyists, and vehicle owners who need a robust, easy-to-install master battery disconnect—especially those working on race cars, custom battery relocations, RVs, boats, or industrial equipment. If you require a straightforward SPST switch that handles heavy starting currents, mounts cleanly in a panel or with an optional mounting plate, and can be protected with terminal covers, the Fastronix 3\/8\" 2 Post SPST switch is a practical, high-current solution.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What wire size should I use with this 180A switch?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use cable sized for the continuous 180A load—typically 2\/0 or 1\/0 AWG depending on run length and application; consult a wiring chart.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this for marine or RV battery isolation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It functions as a master battery cut-off for RVs and boats; add terminal covers and corrosion protection for marine environments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Fastronix Solutions","offers":[{"title":"Default Title","offer_id":55168320209239,"sku":"B011EYWMDS","price":52.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/fastronix-front-view-switch.jpg?v=1790399851","url":"https:\/\/britishgarage.co.uk\/products\/fastronix-solutions-3-8-2-post-spst-battery-disconnect-switch-180a-continuous-1000a-peak","provider":"British Garage","version":"1.0","type":"link"}