{"product_id":"ampper-side-post-battery-disconnect-switch-12v-24v-kit-brass-knife-blade-200a-continuous","title":"Ampper Side-Post Battery Disconnect Switch 12V\/24V Kit — Brass Knife-Blade, 200A Continuous","description":"\u003cb\u003eAmpper Side Post Battery Disconnect Switch is a knife-blade master cut-off for GM-style side post batteries that safely isolates 12V–24V electrical systems.\u003c\/b\u003e\n\n\u003cp\u003eThis compact kit provides a simple on\/off solution to remove parasitic drain, secure batteries during storage or maintenance, and protect wiring on cars, boats, RVs, ATVs and other vehicles. The Ampper switch fits side post batteries with a 3\/8\" hole, uses a lift-style knife blade to interrupt power, and includes hardware to adapt to common side-post layouts. Built from solid brass for corrosion resistance, it handles heavy loads (200A continuous; 600A momentary at 12V) and installs in minutes with basic hand tools.\u003c\/p\u003e\n\n\u003ch3\u003eWill this switch fit my battery and electrical system?\u003c\/h3\u003e\n\u003cp\u003eYes when your battery uses GM-style side posts with a 3\/8\" hole. It is designed for DC systems between 12V and 24V and works best mounted on the negative side as recommended for many installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with side post batteries that accept a 3\/8\" bolt.\u003c\/li\u003e\n  \u003cli\u003eOperates on 12V and 24V DC systems.\u003c\/li\u003e\n  \u003cli\u003eRecommended installation on the negative terminal for grounding convenience.\u003c\/li\u003e\n  \u003cli\u003eNot intended for top-post batteries without an adapter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much current can this disconnect switch handle and when does it trip?\u003c\/h3\u003e\n\u003cp\u003eThe Ampper switch is rated for continuous loads up to 200 amps and can tolerate short surge currents up to 600 amps at 12V. It is a manual on\/off knife blade — it does not auto-trip; you lift the blade to cut power instantly.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e200A continuous rating for sustained loads.\u003c\/li\u003e\n  \u003cli\u003e600A momentary capacity at 12V for engine cranks and starter surges.\u003c\/li\u003e\n  \u003cli\u003eManual knife-blade action provides immediate positive disconnect.\u003c\/li\u003e\n  \u003cli\u003eSolid brass construction dissipates heat and resists corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat comes in the Ampper kit and how easy is it to install?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives with the switch plus multiple bolts and spacers so you can adapt to common side-post configurations. Installation is straightforward: disconnect the battery, attach the provided bolts and spacers, mount the switch, then test the on\/off action.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncluded: 1x Ampper battery switch, 1 short bolt, two pairs of 3\/8\" side-post bolts (one short pair, one long pair), 2 spacers, 2 washers.\u003c\/li\u003e\n  \u003cli\u003eSimple hand-tool installation — wrench and small socket recommended.\u003c\/li\u003e\n  \u003cli\u003eKnife-blade lifts to isolate power quickly for storage or service.\u003c\/li\u003e\n  \u003cli\u003eCan be installed standalone or locked together with another switch for tandem shutoffs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs the switch durable for marine and outdoor use?\u003c\/h3\u003e\n\u003cp\u003eAmpper built this disconnect with solid brass components to minimize rust and corrosion in harsh environments. The materials and compact packaging are suitable for boats, RVs, and vehicles where moisture and vibration are common.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid brass construction resists corrosion in wet or salty conditions.\u003c\/li\u003e\n  \u003cli\u003eCompact footprint — package size approximately 3.9\" x 2.75\" x 2.75\".\u003c\/li\u003e\n  \u003cli\u003eMechanical knife-blade design reduces electrical arcing when opened under load.\u003c\/li\u003e\n  \u003cli\u003eIdeal for seasonal storage or long-term layup to prevent battery drain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Ampper Side Post Battery Disconnect Switch is aimed at DIY vehicle owners, boaters, RV and ATV enthusiasts, fleet managers, and anyone who needs an easy, reliable way to isolate side-post batteries with a 3\/8\" terminal. It’s especially useful for people who store vehicles for extended periods, want to prevent parasitic battery drain, or require a simple mechanical cut-off for safety and maintenance.\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: Can this switch be used on top-post batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It fits GM-style side post batteries with a 3\/8\" hole only; top-post batteries require a different adapter or model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the switch automatically disconnect under overload?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. It is a manual knife-blade on\/off switch rated 200A continuous and 600A momentary; it does not auto-trip.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Ampper","offers":[{"title":"Default Title","offer_id":67592521646265,"sku":"B0CKR51YST","price":60.86,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/ampper-front-view-switch.jpg?v=1790565099","url":"https:\/\/redleafauto.ca\/products\/ampper-side-post-battery-disconnect-switch-12v-24v-kit-brass-knife-blade-200a-continuous","provider":"Redleaf Auto","version":"1.0","type":"link"}