{"product_id":"sierra-rk40840-compact-rocker-switch-on-on-spdt-11-rk40840","title":"Sierra RK40840 Compact Marine Rocker Switch – On-On, SPDT, Maintained, No Off Position, 12\/24VDC, AC Rated","description":"\u003ch2\u003eSierra RK40840 Compact Marine Rocker Switch – On-On, SPDT, Maintained, No Off Position, 12\/24VDC, AC Rated\u003c\/h2\u003e\u003cp\u003eThe Sierra RK40840 is a compact On-On SPDT (Single Pole, Double Throw) rocker switch with a high-profile rocker action that delivers a crisp, positive feel with every press. Unlike most rocker switches, the RK40840 has no off position — it is always in one of two maintained on states, routing a single circuit to either of two outputs at all times. This makes it the correct choice for source selection and mode switching applications where the circuit must remain active continuously and you simply need to choose which of two paths it takes.\u003c\/p\u003e\u003cp\u003eIts compact body fits a standard rectangular panel cutout. Rated for both AC and DC operation — 12A at 125V AC, 10A at 250V AC, and suitable for 12V and 24V DC systems — making it a versatile option for mixed AC\/DC panel builds.\u003c\/p\u003e\u003ch3\u003eKey Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 11-RK40840\u003c\/li\u003e\n\u003cli\u003eSwitch Type: Compact Rocker, On-On (maintained)\u003c\/li\u003e\n\u003cli\u003eCircuit Configuration: SPDT (Single Pole, Double Throw)\u003c\/li\u003e\n\u003cli\u003eAction: Maintained both sides — no off position; always routes to one of two outputs\u003c\/li\u003e\n\u003cli\u003eAC Rating: 12A at 125V AC \/ 10A at 250V AC\u003c\/li\u003e\n\u003cli\u003eDC Rating: Suitable for 12V and 24V DC systems\u003c\/li\u003e\n\u003cli\u003ePanel Cutout: Standard rectangular\u003c\/li\u003e\n\u003cli\u003eNote: (On) in parentheses on any switch in this series designates a momentary position\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSource selection between two circuits where one of two outputs must always be active\u003c\/li\u003e\n\u003cli\u003eMode switching applications where the circuit must remain energized in one direction at all times\u003c\/li\u003e\n\u003cli\u003eMarine DC panels for 12V and 24V source-selection switching\u003c\/li\u003e\n\u003cli\u003eAC circuit source selection on shore power panels\u003c\/li\u003e\n\u003cli\u003eAny panel using a standard rectangular rocker switch cutout requiring a no-off SPDT switch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThe RK40840 is a specialized switch — choose it specifically when your application requires the circuit to always be routed to one of two outputs with no off state between them. This is the correct configuration for applications like battery bank selection, dual-source switching, or mode selection where an off state would interrupt a critical circuit. Verify your wiring diagram before ordering to confirm you need On-On rather than On-Off-On. If you need a center-off position between the two active states, the \u003ca href=\"\/products\/sierra-rk40850-compact-rocker-switch-on-off-on-spdt\"\u003eSierra RK40850 Compact On-Off-On SPDT\u003c\/a\u003e is the standard center-off alternative in the same compact series. For a momentary-both-sides compact switch, the \u003ca href=\"\/products\/sierra-rk40870-compact-rocker-switch-on-off-on-spdt\"\u003eSierra RK40870 Compact (On)-Off-(On) SPDT\u003c\/a\u003e covers dual-direction momentary applications. For a simple maintained On-Off switch, the \u003ca href=\"\/products\/sierra-rk40800-compact-marine-rocker-switch-on-off-spst-12-24vdc-ac-rated\"\u003eSierra RK40800 Compact On-Off SPST\u003c\/a\u003e is the single-output alternative.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51250883264548,"sku":"11-RK40840","price":17.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/11-RK40840.jpg?v=1786511615","url":"https:\/\/marisolmarine.com\/products\/sierra-rk40840-compact-rocker-switch-on-on-spdt-11-rk40840","provider":"Marisol Marine Company","version":"1.0","type":"link"}