{"product_id":"perko-8503dp-battery-selector-switch-with-alternator-field-disconnect-250a-marine-battery-switch-6-50v-dc","title":"Perko 8503DP Medium Duty Battery Selector Switch with Alternator Field Disconnect","description":"\u003cp\u003eThe Perko 8503DP is a medium duty battery selector switch built for boats running non unitized alternators, where an alternator field disconnect is needed to protect the charging system. The switch's alternator field disconnect feature interrupts the field current if the switch is turned OFF while the engine is still running, reducing the risk of damage to the alternator. The body is molded polycarbonate with brass terminals for corrosion resistance and long service life at the helm or in the engine compartment.\u003c\/p\u003e\u003cp\u003eOperation is a rotary, two position (2-way) design rated for 6 to 50 volt marine electrical systems and up to 250 amps. The knob uses a 90 degree rotation feature so the operator can feel the switch's position by touch alone, which matters in low light or in an emergency shutoff situation, and the classic knob shape makes it easy to grip and turn even with wet or gloved hands. The switch is ignition protected and carries an IP54 ingress protection rating. An optional spacer ring, sold separately under part number 0462DP0RED, allows the use of larger cables with this switch. The 8503DP is a surface mount switch intended for permanent panel or bulkhead installation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Perko\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 8503DP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Battery Selector Switch with Alternator Field Disconnect\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 6 to 50 Volts (Marine Electrical Systems)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Rating:\u003c\/strong\u003e 250 Amps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Positions:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Type:\u003c\/strong\u003e 2-way\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuator Type:\u003c\/strong\u003e Manual, 90 degree rotation knob\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e Screw Terminal (Marine)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Material:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Material:\u003c\/strong\u003e Polycarbonate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Surface Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress Protection Rating:\u003c\/strong\u003e IP54\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Gray\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Protected:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 2.63 x 5.25 x 5.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Accessory:\u003c\/strong\u003e Spacer ring, part number 0462DP0RED, for use with larger cables\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 066510878508, 085226559884, 012304402350\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits 6 to 50 volt marine electrical systems using non unitized alternators that require a field disconnect when the battery switch is turned OFF with the engine running.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the alternator field disconnect on the Perko 8503DP do?\u003c\/strong\u003e It interrupts the alternator's field current if the 8503DP switch is turned OFF while the engine is still running, which reduces the possibility of damage to a non unitized alternator.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Perko 8503DP ignition protected?\u003c\/strong\u003e Yes, the 8503DP is ignition protected, meaning it is designed to reduce the risk of igniting flammable vapors in the engine compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat voltage range does this battery switch support?\u003c\/strong\u003e The 8503DP is rated for use on 6 to 50 volt marine electrical systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many amps is the Perko 8503DP rated for?\u003c\/strong\u003e It carries a 250 amp current rating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat materials is the 8503DP made from?\u003c\/strong\u003e The switch has a polycarbonate body with brass terminals and brass contacts for corrosion resistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Perko 8503DP battery switch?\u003c\/strong\u003e The 8503DP measures 2.63 x 5.25 x 5.25 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Perko 8503DP weigh?\u003c\/strong\u003e The 8503DP weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Perko 8503DP mounted?\u003c\/strong\u003e It is a surface mount switch designed for panel or bulkhead installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between the Perko 8503DP and a standard selector switch like the 8501?\u003c\/strong\u003e The 8503DP (Fig. 8503) adds an alternator field disconnect function that the standard Fig. 8501 selector switch does not have; the 8503DP is intended for use with non unitized alternators that require this protection.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 8503DP accept larger battery cables?\u003c\/strong\u003e Yes, an optional spacer ring, part number 0462DP0RED, is available separately and allows the 8503DP to accommodate larger cables.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ingress protection rating of the Perko 8503DP?\u003c\/strong\u003e The 8503DP carries an IP54 ingress protection rating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many switch positions does the 8503DP have?\u003c\/strong\u003e The 8503DP is a 2-way, two position rotary switch that lets the operator feel the switch position through a 90 degree rotation knob, useful in low light.\u003c\/p\u003e","brand":"Perko","offers":[{"title":"Default Title","offer_id":48991122424027,"sku":"PKO-8503DP","price":92.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/PKO-8503DP_lg__72204.1558118398.500.750.jpg?v=1785189063","url":"https:\/\/www.goodvibesmarina.com\/products\/perko-8503dp-battery-selector-switch-with-alternator-field-disconnect-250a-marine-battery-switch-6-50v-dc","provider":"Good Vibes Marina","version":"1.0","type":"link"}