{"product_id":"sierra-mp28870-emergency-cut-off-kill-switch-replaces-omc-585134-panel-mount-for-marine-conventional-and-magneto-ignitions","title":"Sierra MP28870 Emergency Cut-Off Switch, White, Replaces OMC 585134","description":"\u003cp\u003eThe Sierra MP28870 is an emergency cut-off switch built to kill ignition power the instant the safety lanyard is pulled free. The circuit stays closed while the lanyard is in place and opens the moment it is removed, cutting the engine so a boat cannot run away from an operator who has left the helm. It is designed for use with conventional or magneto ignitions and mounts through a panel up to 1\/4 inch thick, with screw terminals for a straightforward wiring connection. The housing is brass for corrosion resistance in a marine environment, finished in white, and the switch is rated IP54 to help seal out moisture and spray around the panel opening. It operates manually as a 2-way, 2-position break-type switch, and its compact 0.39 x 0.39 x 0.39 inch profile keeps the panel footprint small. The design also makes re-connection easier after the lanyard is reattached. This switch is intended to replace OMC 585134, and the matching replacement lanyard is the Sierra MP28900, which can be ordered separately when the original lanyard wears out or is lost.\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 MP28870\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Cut Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e Break\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Type:\u003c\/strong\u003e 2-way\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Positions:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Screw Terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Panel Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Manual\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel Thickness:\u003c\/strong\u003e Up to 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternational Protection Rating:\u003c\/strong\u003e IP54\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282367169\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Lanyard:\u003c\/strong\u003e MP28900\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for use with conventional or magneto ignition systems on panels up to 1\/4 inch thick.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 585134\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra MP28870 emergency cut-off switch do?\u003c\/strong\u003e The Sierra MP28870 keeps the ignition circuit closed only while its lanyard is attached; pulling the lanyard opens the circuit and kills engine power, which is the basic safety function of an emergency cut-off switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the MP28870 compatible with my ignition system?\u003c\/strong\u003e Yes, the Sierra MP28870 is built for use with either conventional or magneto ignition systems, so it covers both common setups found on boats needing this type of cut-off switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the MP28870 replace OMC 585134?\u003c\/strong\u003e Yes, the Sierra MP28870 is a direct replacement for OMC part number 585134.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the MP28870 switch?\u003c\/strong\u003e The Sierra MP28870 measures 0.39 x 0.39 x 0.39 inches, a compact size meant to fit through a small panel cutout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow thick a panel can the MP28870 be mounted in?\u003c\/strong\u003e This switch is rated for panel mounting on thicknesses up to 1\/4 inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the MP28870 switch made of?\u003c\/strong\u003e The MP28870 has a brass housing, chosen for its corrosion resistance in marine environments, finished in white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the MP28870 weigh?\u003c\/strong\u003e The Sierra MP28870 emergency cut-off switch weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the MP28870 sealed against moisture?\u003c\/strong\u003e Yes, it carries an IP54 protection rating, which helps seal out moisture and spray around the switch and panel opening.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat replacement lanyard works with the MP28870?\u003c\/strong\u003e The Sierra MP28900 is the replacement lanyard designed for use with the MP28870 emergency cut-off switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the MP28870 a manual switch, and how many positions does it have?\u003c\/strong\u003e The MP28870 is a manual, 2-way switch with 2 positions and a break-type contact, meaning the circuit opens when the lanyard is removed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes removing the lanyard immediately cut power on the MP28870?\u003c\/strong\u003e Yes, the circuit is closed only while the lanyard is in place on the MP28870; once the lanyard comes off, the circuit opens and power is cut.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat terminals does the MP28870 use for wiring?\u003c\/strong\u003e The Sierra MP28870 uses screw terminals for its electrical connections, making it straightforward to wire into an existing ignition circuit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988454584539,"sku":"SIE-MP28870","price":40.12,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-mp28870_lg__83344.1722482562.500.750.jpg?v=1785188722","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-mp28870-emergency-cut-off-kill-switch-replaces-omc-585134-panel-mount-for-marine-conventional-and-magneto-ignitions","provider":"Good Vibes Marina","version":"1.0","type":"link"}