{"product_id":"sierra-mp41040-marine-ignition-switch-4-position-conventional-acc-off-run-start-4-screw-tab-7-8-panel-mount","title":"Sierra MP41040 Ignition Switch, 4-Position Conventional, 15 Amp, Knurled Black Plastic Cap","description":"\u003cp\u003eThe Sierra MP41040 is a 4-position conventional marine ignition switch built for panel mounting on boats that need Accessory, Off, Run, and Start functions from a single switch. The switch body is constructed of polyester for resistance to the harsh marine environment, while the visible face nut is a knurled black plastic design fitted with a rubber cap to help keep moisture out of the switch mechanism. A brass back-up nut secures the switch to the panel from behind.\u003c\/p\u003e\u003cp\u003eElectrically, the MP41040 is rated for three separate circuits: 15 Amp at 12 VDC on the ignition circuit, 30 Amp at 12 VDC on the solenoid circuit, and 15 Amp at 12 VDC on the accessory circuit, giving it enough capacity to handle ignition, starter solenoid engagement, and accessory loads through the same key switch. Termination is via 4 screw tab terminals, making wiring straightforward during installation or a switch replacement.\u003c\/p\u003e\u003cp\u003eThe switch mounts through a 7\/8 inch panel hole and is built with a long shaft, accommodating panels up to 1 1\/8 inch maximum thickness. This makes the MP41040 a straightforward drop-in replacement for boats with a matching 4-position, 4 screw tab ignition switch layout.\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 MP41040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Ignition Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Positions:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Acc - Off - Run - Start\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e 4 Screw Tab\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIgnition Circuit Rating:\u003c\/strong\u003e 15 Amp at 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolenoid Circuit Rating:\u003c\/strong\u003e 30 Amp at 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccessory Circuit Rating:\u003c\/strong\u003e 15 Amp at 12 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack Up Nut:\u003c\/strong\u003e Brass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFace Nut:\u003c\/strong\u003e Knurled black plastic with rubber cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hole Size:\u003c\/strong\u003e 7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Length:\u003c\/strong\u003e Long, 1 1\/8 inch maximum panel thickness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e Normally Closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.28 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282367732\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal fit for marine vehicles using a 4-position, 4 screw tab ignition switch with a 7\/8 inch mounting hole and up to 1 1\/8 inch panel thickness.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo specific OEM cross-reference numbers are listed for the MP41040.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat are the 4 positions on the Sierra MP41040 ignition switch?\u003c\/strong\u003e The MP41040 operates through Accessory, Off, Run, and Start positions, giving a single conventional switch full control of ignition, accessory power, and engine starting.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the amp rating of the MP41040 ignition switch?\u003c\/strong\u003e The ignition and accessory circuits are each rated 15 Amp at 12 VDC, while the solenoid circuit is rated 30 Amp at 12 VDC on the Sierra MP41040.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size mounting hole does the MP41040 require?\u003c\/strong\u003e A 7\/8 inch panel hole is needed to install the Sierra MP41040 ignition switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the maximum panel thickness for this switch?\u003c\/strong\u003e The MP41040 uses a long shaft rated for panel thickness up to 1 1\/8 inch maximum.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra MP41040 switch body made of?\u003c\/strong\u003e The switch body is made of polyester, with a brass back-up nut and a knurled black plastic face nut fitted with a rubber cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the face nut on the MP41040 waterproof?\u003c\/strong\u003e The knurled black plastic face nut includes a rubber cap to help protect the switch mechanism from moisture, though no IP waterproof rating is specified for this switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of terminals does the MP41040 use?\u003c\/strong\u003e The Sierra MP41040 uses 4 screw tab terminals for wiring connections.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the MP41040 fit any specific boat make or engine?\u003c\/strong\u003e The Sierra MP41040 is a universal-fit ignition switch designed for marine vehicles using a standard 4-position, 4 screw tab, 7\/8 inch hole switch configuration rather than a single make-specific fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the MP41040 ignition switch weigh?\u003c\/strong\u003e The Sierra MP41040 weighs 0.28 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included with the Sierra MP41040?\u003c\/strong\u003e The MP41040 is supplied as a single 4-position conventional ignition switch with its back-up nut and knurled black plastic face nut with rubber cap already assembled.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the MP41040 a Normally Closed or Normally Open switch?\u003c\/strong\u003e The Sierra MP41040 is a Normally Closed contact type ignition switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the MP41040 handle the starter solenoid circuit directly?\u003c\/strong\u003e Yes, the solenoid circuit on the Sierra MP41040 is rated 30 Amp at 12 VDC, in addition to the 15 Amp ignition and accessory circuits.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988457074907,"sku":"SIE-MP41040","price":24.21,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-MP41040__82306.1722507075.500.750.jpg?v=1785188378","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-mp41040-marine-ignition-switch-4-position-conventional-acc-off-run-start-4-screw-tab-7-8-panel-mount","provider":"Good Vibes Marina","version":"1.0","type":"link"}