{"product_id":"qbp500620","title":"Perko Battery Switch, 6-32V, Ignition Protected, Surface Mount","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThis Perko battery switch range is a group of marine battery control switches for connecting, isolating, and selecting onboard battery banks. Depending on the selected model, the range covers compact medium duty selector switches, a heavy duty selector switch with alternator field disconnect, and a medium duty main battery disconnect switch with key lock security.\u003c\/p\u003e\u003cp\u003eThese switches are built for 6 to 32 VDC marine electrical systems and use polycarbonate bodies with brass terminals. Ratings vary by configuration, with compact selector models rated at 315 amps continuous and 450 amps for 5 minutes, the heavy duty selector rated at 380 amps continuous and 850 amps for 5 minutes, and the medium duty disconnect rated at 250 amps continuous and 360 amps for 5 minutes.\u003c\/p\u003e\u003cp\u003eThey suit surface-mounted installations where battery control needs to stay accessible at the helm, near the engine space, or close to the battery compartment. Ignition protected construction supports installation in gasoline engine rooms when the rest of the electrical installation is arranged correctly for the boat.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eWorks with 6 to 32 VDC marine electrical systems, covering common 12V and 24V vessel setups.\u003c\/li\u003e\n\u003cli\u003eIgnition protected construction supports use in gasoline engine room locations.\u003c\/li\u003e\n\u003cli\u003ePolycarbonate body with brass terminals for a housing and connection layout suited to marine electrical service.\u003c\/li\u003e\n\u003cli\u003eSelector switch versions allow battery bank selection for starting, house loads, charging, or emergency parallel use.\u003c\/li\u003e\n\u003cli\u003eCompact selector versions are rated at 315 amps continuous and 450 amps for 5 minutes, with 3\/8 inch terminal studs.\u003c\/li\u003e\n\u003cli\u003eThe heavy duty selector version is rated at 380 amps continuous and 850 amps for 5 minutes, with 1\/2 inch terminal studs and alternator field disconnect.\u003c\/li\u003e\n\u003cli\u003eThe medium duty disconnect with key lock is rated at 250 amps continuous and 360 amps for 5 minutes, with 5\/16 inch terminal studs.\u003c\/li\u003e\n\u003cli\u003eThe make-before-break function on selector versions allows movement between 1, ALL, and 2 positions while the engine is running.\u003c\/li\u003e\n\u003cli\u003eSurface-mount format gives installers flexibility when replacing an older switch or setting up a new battery control location.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eVariants\u003c\/h6\u003e\u003cp\u003eThis product is offered in several Perko battery switch configurations. The variants differ by part number, catalog length option, switch duty level, selector or disconnect function, and the presence of key lock or alternator field disconnect features.\u003c\/p\u003e\u003cp\u003eThe compact selector versions share a 4 inch by 4 inch by 3 inch body size, 315 amp continuous rating, 450 amp 5-minute intermittent rating, and 3\/8 inch terminal studs. The heavy duty selector and the medium duty disconnect use different ratings and terminal stud sizes, so the selected variant should match the vessel load, cable size, and battery control layout.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e8511DP, Length 3-Inch: Compact medium duty battery selector switch without key lock. This version suits dual-battery selection where a smaller footprint and four-position selector control are needed.\u003c\/li\u003e\n\u003cli\u003e8512DP, Length 2-1\/4-Inch: Compact medium duty battery selector switch with key lock. The key lock adds control over switch access where unauthorized operation is a concern.\u003c\/li\u003e\n\u003cli\u003e8603DP, Length 1-3\/4-Inch: Heavy duty battery selector switch with alternator field disconnect. This version fits higher-current installations that need battery selection plus added protection for non-unitized alternators if the switch is turned off while the engine is running.\u003c\/li\u003e\n\u003cli\u003e9602DP, Length 2-Inch: Medium duty main battery disconnect switch with key lock. This option is for simple on-off battery isolation rather than selecting between battery banks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eInstallation and system fit\u003c\/h6\u003e\u003cp\u003eUse the selected switch within its amp rating and match the terminal stud size to the battery cable ends and the expected current load. The compact selector models use 3\/8 inch terminal studs, the heavy duty selector uses 1\/2 inch terminal studs, and the medium duty disconnect uses 5\/16 inch terminal studs.\u003c\/p\u003e\u003cp\u003eSelector versions are useful where the boat carries more than one battery bank and the operator needs to run on battery 1, battery 2, or both. The disconnect version is better suited to installations where the goal is a lockable main battery shutoff rather than battery bank selection.\u003c\/p\u003e\u003ch6\u003eUse cases on board\u003c\/h6\u003e\u003cp\u003eThese switches are a practical fit for cruisers, fishing boats, and small commercial vessels that need clear manual control over battery power. They can help isolate the electrical system during storage, manage starting and house loads, or combine batteries for emergency starting when the selected switch supports that function.\u003c\/p\u003e\u003ch6\u003eMaintenance and care\u003c\/h6\u003e\u003cp\u003eBattery switch terminals should be kept clean, tight, and protected from corrosion as part of normal onboard electrical maintenance. After installation, check cable routing so heavy battery cables are supported and not pulling against the switch terminals during vibration, trailering, or rough-water operation.\u003c\/p\u003e","brand":"Perko","offers":[{"title":"3-Inch","offer_id":52023083860149,"sku":"QBP500620-V0","price":102.81,"currency_code":"USD","in_stock":true},{"title":"2-1\/4-Inch","offer_id":52023083892917,"sku":"QBP500620-V4","price":121.47,"currency_code":"USD","in_stock":true},{"title":"1-3\/4-Inch","offer_id":52023083925685,"sku":"QBP500620-V6","price":329.49,"currency_code":"USD","in_stock":true},{"title":"2-Inch","offer_id":52023083958453,"sku":"QBP500620-V1","price":117.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1334546_qbp500620.webp?v=1780191689","url":"https:\/\/www.qualityboatparts.com\/products\/qbp500620","provider":"Quality Boat Parts","version":"1.0","type":"link"}