{"product_id":"sierra-mp39520-push-pull-switch-on-off-spst-15a-12v-solid-brass-marine-panel-switch","title":"Sierra MP39520 Push-Pull Switch, On-Off SPST, Solid Brass, 3\/8 Inch Mounting Bushing","description":"\u003cp\u003eThe Sierra MP39520 is a push-pull toggle switch built for on-off SPST switching in 12-volt marine electrical circuits. Constructed of solid brass, the switch is designed to hold up in the corrosion-prone environment of a boat's helm or accessory panel, where cheaper plastic-bodied switches tend to fail. Operation is simple: pull the knob to turn the connected circuit on, push it in to turn it off, making it a natural fit for bilge pumps, lights, blowers, horns, and other 12-volt accessories that call for a straightforward manual switch rather than a rocker or toggle.\u003c\/p\u003e\u003cp\u003eThe switch mounts through a 3\/8 inch bushing and is sized to fit panels up to 1 inch thick, so it can be installed in most dash, console, or accessory panel cutouts without needing a custom-drilled hole. It terminates in two screw terminals for a secure, serviceable wiring connection, and the knob itself is a chrome-plated plastic finish that resists fading and wear from sun and spray. Rated for 15 amps at 12 VDC, the MP39520 is sized for typical low-draw marine accessory circuits.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e MP39520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Push-Pull, Off-On SPST\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 15 amps at 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Solid brass body\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKnob Finish:\u003c\/strong\u003e Chrome-plated plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e Two screw terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Bushing Size:\u003c\/strong\u003e 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel Thickness Fit:\u003c\/strong\u003e Up to 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 3.18 x 1.75 x 6.81 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282368067\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis is a universal 12-volt panel-mount switch; no make, model, or year-specific fitment applies.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers apply to this part.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra MP39520 an on-off switch or does it have multiple positions?\u003c\/strong\u003e The Sierra MP39520 is a single-pole, single-throw (SPST) switch with two positions: off and on. Pulling the knob turns the circuit on, and pushing it in turns it off.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat amperage can the MP39520 handle?\u003c\/strong\u003e It is rated for 15 amps at 12 VDC, which covers typical marine accessory circuits like bilge pumps, lights, blowers, and horns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra MP39520 switch made of?\u003c\/strong\u003e The switch body is solid brass, chosen for its resistance to corrosion in a marine environment, with a chrome-plated plastic knob.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick of a panel does the MP39520 fit?\u003c\/strong\u003e The Sierra MP39520 is designed to fit panels up to 1 inch thick, using its 3\/8 inch mounting bushing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size mounting hole does the MP39520 need?\u003c\/strong\u003e It uses a 3\/8 inch mounting bushing, so the panel cutout should be sized to accept that bushing diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the Sierra MP39520 wired?\u003c\/strong\u003e It terminates in two screw terminals, allowing wires to be secured directly under the terminal screws rather than requiring soldered or crimped connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the MP39520 weigh?\u003c\/strong\u003e The Sierra MP39520 weighs 0.15 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the physical dimensions of the MP39520 switch?\u003c\/strong\u003e The switch measures 3.18 x 1.75 x 6.81 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the MP39520 come in a bulk package option?\u003c\/strong\u003e Yes, the same switch design is available in a bulk carton of 100 pieces under Sierra part number MP39522, while the MP39520 is the standard single-unit package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra MP39520 suitable for use on a boat dashboard?\u003c\/strong\u003e Yes, its push-pull operation, brass construction, and panel mounting design make it well suited to boat dash or accessory panel installations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when you buy the MP39520?\u003c\/strong\u003e The Sierra MP39520 ships as a complete push-pull switch assembly with mounting bushing and knob, ready to wire to its two screw terminals.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988454617307,"sku":"SIE-MP39520","price":20.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-MP39520__10302.1780061502.500.750.jpg?v=1785188121","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-mp39520-push-pull-switch-on-off-spst-15a-12v-solid-brass-marine-panel-switch","provider":"Good Vibes Marina","version":"1.0","type":"link"}