{"product_id":"kw11-3z-micro-limit-switch-lever-2-pin-normally-open-5a-250vac","title":"KW11-3Z Micro Limit Switch with Lever - 2-Pin Normally Open 5A 250VAC","description":"\u003cdiv class=\"nznpd\"\u003e\n\u003cdiv class=\"nznpd__lead\"\u003e\n\u003cp class=\"nznpd__intro\"\u003eThe KW11-3Z is a small micro limit switch with a sprung steel lever and two terminals. It is normally open: the circuit between its two pins closes only while the lever is pressed. It suits end-of-travel stops, lid and door detection, and Arduino or ESP32 projects, and works with 3.3V and 5V controller inputs. Price is per switch. Need a normally closed contact too? The \u003ca href=\"\/products\/sc7301-micro-limit-switch-lever-3-pin-spdt-5a-250vac\"\u003eSC7301 3-pin lever switch\u003c\/a\u003e has COM, NO and NC, and the KW11-3Z also comes as a \u003ca href=\"\/products\/kw11-3z-micro-limit-switch-with-roller-lever-3-pin-spdt-5a-250vac\"\u003e3-pin roller lever\u003c\/a\u003e and a \u003ca href=\"\/products\/kw11-3z-micro-limit-switch-no-lever-3-pin-spdt-5a-250vac\"\u003e3-pin no-lever\u003c\/a\u003e version.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__specs\"\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eModel\u003c\/span\u003e\u003cstrong\u003eKW11-3Z, 2-pin lever\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eContact form\u003c\/span\u003e\u003cstrong\u003eNormally open (SPST-NO)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003ePinout\u003c\/span\u003e\u003cstrong\u003e1 = COM, 3 = NO (no pin at 2 \/ NC)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eActuator\u003c\/span\u003e\u003cstrong\u003eStraight steel lever, about 16 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eRating marked\u003c\/span\u003e\u003cstrong\u003e5A 125\/250VAC, T85\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eDC use\u003c\/span\u003e\u003cstrong\u003eSignal level only, no DC power rating\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBody size\u003c\/span\u003e\u003cstrong\u003eAbout 20 x 10 x 7 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eMounting\u003c\/span\u003e\u003cstrong\u003e2 x 2.35 mm holes, 9.5 mm apart, suit M2\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eTerminals\u003c\/span\u003e\u003cstrong\u003e2 solder tabs with wire holes, about 4 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eDatasheets\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__ds\"\u003e\n\u003ca class=\"nznpd__dsbar\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/KW11-3Z-2Pin-Lever-NO-Datasheet-v3-r1-2026-10-18.pdf\" target=\"_blank\" rel=\"noopener\" aria-label=\"Download the KW11-3Z 2-pin lever switch datasheet (PDF)\"\u003e\n\u003csvg width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V8z\"\u003e\u003c\/path\u003e\u003cpolyline points=\"14 2 14 8 20 8\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\n\u003cspan\u003eFull technical datasheet\u003c\/span\u003e\n\u003cspan class=\"nznpd__dsmeta\"\u003ePDF\u003csvg width=\"17\" height=\"17\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4\"\u003e\u003c\/path\u003e\u003cpolyline points=\"7 10 12 15 17 10\"\u003e\u003c\/polyline\u003e\u003cline x1=\"12\" y1=\"15\" x2=\"12\" y2=\"3\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\u003c\/span\u003e\n\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__included\"\u003e\n\u003cdiv class=\"nznpd__qty\"\u003e1×\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eKW11-3Z 2-pin lever micro limit switch\u003c\/strong\u003e\u003cp\u003ePer switch, in the quantity you order. Wires and screws are not included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eGreat for\u003c\/h3\u003e\n\u003cdiv class=\"nznpd__uses\"\u003e\n\u003cdiv class=\"nznpd__use\"\u003eDetecting a lid, door or drawer closing\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eEnd-of-travel stops on a slide or small gantry\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eBump sensors on a small robot\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eCounting cam or lever passes with an Arduino\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eHome switches for simple stepper projects\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003ePaper, coin or tray present sensing\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003cdiv class=\"nznpd__qs\"\u003e\n\u003ch3\u003eWiring \u0026amp; getting started\u003c\/h3\u003e\n\u003col class=\"nznpd__steps\"\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eFind the pins\u003c\/strong\u003e\u003cp\u003eOn the numbered face, with the lever pivot on the left, the two tabs are 1 (COM, at the pivot end) and 3 (NO, in the middle). The back face reads C and NO. Position 2 (NC) has no tab.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eWire it to your board\u003c\/strong\u003e\u003cp\u003eConnect pin 1 to GND and pin 3 to a digital pin set to INPUT_PULLUP. The pin reads HIGH at rest and LOW while the lever is pressed. This works the same on 3.3V and 5V boards.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eMount and test\u003c\/strong\u003e\u003cp\u003eFix it with two M2 screws so the lever is pressed right at the end of travel, with a little over-travel. Press the lever by hand and check the input changes before letting anything move.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cp class=\"nznpd__note\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The switch has no DC power rating, so run motors, pumps or solenoids through a relay or MOSFET module, not straight through it. Mains wiring needs an enclosure and a licensed electrician.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"NZN Electronics","offers":[{"title":"Default Title","offer_id":67668173652064,"sku":"SW-KW11-3Z-2PIN-LV","price":1.69,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/01-kw11-3z-2-pin-lever-limit-switch-hero.png?v=1792281005","url":"https:\/\/www.nznelectronics.co.nz\/products\/kw11-3z-micro-limit-switch-lever-2-pin-normally-open-5a-250vac","provider":"NZN Electronics","version":"1.0","type":"link"}