{"product_id":"sierra-rk40830-on-off-spdt-marine-rocker-switch","title":"Sierra RK40830 On-Off SPDT Marine Rocker Switch","description":"\u003cp class=\"nvn-hero\"\u003eThe Sierra RK40830 is a black on-off rocker switch built for the helm. It's a single pole double throw design rated at 12 amps at 125 volts AC and 10 amps at 250 volts AC, with a rectangular body that drops into a standard panel cutout. Crisp, positive action every time you flip it.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Sierra RK40830 is a straightforward on-off rocker switch, the kind you reach for when you're wiring up a helm panel and you want a clean, reliable control that just works. It's black, rectangular, and built to Sierra's marine standard, so it belongs on a boat and not in a parts-bin compromise. Flip it and you get a crisp, positive action. No mush, no guessing whether the circuit is live.\u003c\/p\u003e\n\u003cp\u003eThis one is a single pole double throw switch, or SPDT, configured for on-off duty. That SPDT design is worth understanding because it gives you options. A single pole double throw rocker has a common terminal and two switched terminals. Wire it the simple way and you've got a clean on-off control for one accessory. Wire it to both throws and the same switch can send power to one circuit or another depending on which way you rock it. That flexibility is handy when dash space is tight and you want one switch to do a little more work.\u003c\/p\u003e\n\u003cp\u003eElectrically, Sierra rates the RK40830 at 12 amps at 125 volts AC and 10 amps at 250 volts AC. Those are the published ratings. The smart move on any switch is to match it to the load you're running and fuse the circuit properly, so the switch never has to carry more than it's built for. Treat it right and a quality rocker like this will outlast most of the gear it controls.\u003c\/p\u003e\n\u003cp\u003eThe body is rectangular and drops into a standard rocker cutout, which matters more than it sounds. Helm panels and dash faces fill up fast. A switch that fits a common rectangular opening means you're not fabricating a custom hole or hunting for a special bezel. Sierra calls out the high-profile rocker action here, and that's the part your fingers notice. The paddle sits proud enough to find by feel in the dark, and the detent gives you that reassuring click when it seats.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Anybody rigging or re-rigging a helm. Think bilge blowers, deck lights, a livewell pump, cabin lighting, a wash-down pump, any accessory that wants a simple, dedicated on-off control at the dash. It's also a clean replacement when an old switch gets corroded, cracks a paddle, or just stops feeling positive. Sierra parts are engineered to meet or exceed the original equipment they replace, so swapping one in restores the panel to how it should feel.\u003c\/p\u003e\n\u003cp\u003eA few honest notes on what this switch is and isn't. It's a panel control switch, not a battery master or disconnect, so don't put it in a main battery feed. The published ratings are AC, so size any DC accessory circuit conservatively and keep it fused. And while the black rectangular body looks right next to most helm switches, there's no illuminated lamp called out in the specs, so if you specifically need a lit rocker, plan for that separately.\u003c\/p\u003e\n\u003cp\u003eInstallation is boat-owner friendly. Kill power at the battery or the breaker first. Pop the old switch out, confirm the new cutout matches, land your wires on the terminals, and seat the rocker until it clicks home. Give every connection a tug to confirm it's solid, add heat-shrink where you can, and you're done. If you're wiring the SPDT to switch between two circuits, label your terminals before you start so you're not tracing wires later.\u003c\/p\u003e\n\u003cp\u003eSierra has been supplying OEM engine builders and boat manufacturers for decades, and that's the pedigree behind a small part like this. It's the kind of component you don't think about until it fails, which is exactly why it's worth starting with one built for the harsh marine environment. For a helm that needs a dependable on-off rocker, the RK40830 is an easy call.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eSingle Pole Double Throw (SPDT) design wires as a simple on-off control or switches power between two circuits\u003c\/li\u003e\n  \u003cli\u003eRated 12 amps at 125 volts AC and 10 amps at 250 volts AC for dependable helm-panel duty\u003c\/li\u003e\n  \u003cli\u003eOn-off rocker action with a crisp, positive click you can find by feel in the dark\u003c\/li\u003e\n  \u003cli\u003eRectangular body drops into a standard rocker cutout, no custom fabrication needed\u003c\/li\u003e\n  \u003cli\u003eHigh-profile paddle sits proud for easy operation with wet or gloved hands\u003c\/li\u003e\n  \u003cli\u003eBlack finish blends in next to most helm and dash switches\u003c\/li\u003e\n  \u003cli\u003eSierra marine construction engineered to meet or exceed the original equipment it replaces\u003c\/li\u003e\n  \u003cli\u003eGenuine Sierra part number RK40830 for a clean, direct panel replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Sierra Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the RK40830 an on-off switch or a two-position switch?\u003c\/summary\u003e\n    \u003cp\u003eIt's an on-off rocker built on a single pole double throw (SPDT) circuit. Wired the simple way it's a clean on-off control. Because it's SPDT, you can also wire it to send power to one of two circuits depending on which way you rock it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the electrical ratings?\u003c\/summary\u003e\n    \u003cp\u003eSierra rates it at 12 amps at 125 volts AC and 10 amps at 250 volts AC. Match the switch to your circuit load and keep the circuit fused so it never carries more than it's built for.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size opening does it need?\u003c\/summary\u003e\n    \u003cp\u003eIt fits a standard rectangular rocker cutout, so it works well on panels where space is tight. Confirm your existing opening matches before you cut a new hole or order a bezel.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat color is it?\u003c\/summary\u003e\n    \u003cp\u003eBlack, which blends in next to most helm and dash switches.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it illuminated?\u003c\/summary\u003e\n    \u003cp\u003eThere's no lit lamp called out in Sierra's specs for this switch. If you specifically need a lighted rocker, plan for that separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan one switch control two different devices?\u003c\/summary\u003e\n    \u003cp\u003eYes. Because it's a single pole double throw design, you can wire both throw terminals and use the one rocker to switch power between two circuits.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it on a 12-volt system?\u003c\/summary\u003e\n    \u003cp\u003eThe published ratings are AC. For a DC accessory circuit, size the circuit conservatively against those ratings and fuse it properly so the switch never carries more than it's rated for.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a genuine Sierra part?\u003c\/summary\u003e\n    \u003cp\u003eYes. It's Sierra part number RK40830, engineered to meet or exceed the original equipment it replaces.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhere does it mount?\u003c\/summary\u003e\n    \u003cp\u003eAnywhere you've got a standard rectangular rocker cutout, typically a helm panel or dash face for accessories like blowers, pumps, and lighting.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eSierra Marine On-Off SPDT Rocker Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eSeaStar Solutions\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eRK40830\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e808282381196\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSwitch Function\u003c\/th\u003e\n\u003ctd\u003eOn-Off\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSwitch Type\u003c\/th\u003e\n\u003ctd\u003eRocker Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eSingle Pole Double Throw (SPDT)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAC Rating at 125V\u003c\/th\u003e\n\u003ctd\u003e12 Amps at 125 Volts AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAC Rating at 250V\u003c\/th\u003e\n\u003ctd\u003e10 Amps at 250 Volts AC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eShape\u003c\/th\u003e\n\u003ctd\u003eRectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eStandard rectangular panel cutout\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the RK40830 an on-off switch or a two-position switch?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's an on-off rocker built on a single pole double throw (SPDT) circuit. Wired the simple way it's a clean on-off control. Because it's SPDT, you can also wire it to send power to one of two circuits depending on which way you rock it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the electrical ratings?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Sierra rates it at 12 amps at 125 volts AC and 10 amps at 250 volts AC. Match the switch to your circuit load and keep the circuit fused so it never carries more than it's built for.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size opening does it need?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It fits a standard rectangular rocker cutout, so it works well on panels where space is tight. Confirm your existing opening matches before you cut a new hole or order a bezel.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What color is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Black, which blends in next to most helm and dash switches.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it illuminated?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"There's no lit lamp called out in Sierra's specs for this switch. If you specifically need a lighted rocker, plan for that separately.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can one switch control two different devices?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Because it's a single pole double throw design, you can wire both throw terminals and use the one rocker to switch power between two circuits.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use it on a 12-volt system?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The published ratings are AC. For a DC accessory circuit, size the circuit conservatively against those ratings and fuse it properly so the switch never carries more than it's rated for.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a genuine Sierra part?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It's Sierra part number RK40830, engineered to meet or exceed the original equipment it replaces.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Where does it mount?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Anywhere you've got a standard rectangular rocker cutout, typically a helm panel or dash face for accessories like blowers, pumps, and lighting.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sierra","offers":[{"title":"Default Title","offer_id":67598775418973,"sku":"2011055","price":8.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_36d1edb3-4151-4839-b785-37d7ab750337.jpg?v=1790941353","url":"https:\/\/nvnmarine.com\/products\/sierra-rk40830-on-off-spdt-marine-rocker-switch","provider":"NVN Marine","version":"1.0","type":"link"}