{"product_id":"50-pack-mini-micro-limit-switch-roller-lever-spdt-snap-action","title":"50-Pack Mini Micro Limit Switch Roller Lever SPDT Snap Action","description":"\n\u003ch2\u003e50-Pack Mini Micro Limit Switch with Roller Lever – SPDT Snap Action\u003c\/h2\u003e\n\u003cp\u003eGet reliable, consistent switching performance with this bulk pack of 50 mini micro limit switches. Featuring a Single Pole Double Throw (SPDT) snap action mechanism and a hinge roller lever actuator, these compact switches are ideal for electronics projects, appliance controls, and automation applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e SPDT – 1 Normally Open (NO), 1 Normally Closed (NC), 1 Common (COM)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage \u0026amp; Current Rating:\u003c\/strong\u003e AC 125V \/ 5A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAction Type:\u003c\/strong\u003e Momentary snap action\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuator Type:\u003c\/strong\u003e Hinge roller lever\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e 3-pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Size (pins not included):\u003c\/strong\u003e 20 × 6 × 10 mm (L × W × H)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHinge Roller Lever Length:\u003c\/strong\u003e 18 mm \/ 0.7 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRoller Diameter:\u003c\/strong\u003e 4.5 mm \/ 0.2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Hole Diameter:\u003c\/strong\u003e 2 mm \/ 0.08 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Hole Spacing:\u003c\/strong\u003e 9 mm \/ 0.35 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic \u0026amp; Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black, Red, Silver Tone\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e 110 g (full pack)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 50 switches per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEU LVD Compliance:\u003c\/strong\u003e Low voltage — below 50V AC or 75V DC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow Snap Action Contacts Work\u003c\/h3\u003e\n\u003cp\u003eThe snap action mechanism applies force to an over-center mechanism as the actuator moves. When the trip point is reached, this creates a rapid change in contact state. Reversing actuator motion to the reset point snaps the contacts back to their original position. This differential between trip and reset points (also called hysteresis or travel to reset) helps prevent false triggering caused by vibration. The result is repeatable, dependable performance — even with slow-moving actuators — and contact travel is independent of actuator travel distance.\u003c\/p\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMicrowave oven door interlocks (N\/O or N\/C)\u003c\/li\u003e\n  \u003cli\u003eRefrigerator and appliance door detection\u003c\/li\u003e\n  \u003cli\u003e3D printer end stops and CNC limit positions\u003c\/li\u003e\n  \u003cli\u003eRobotics, automation, and DIY electronics\u003c\/li\u003e\n  \u003cli\u003eIndustrial control panels and machinery\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e50 × Mini Micro Limit Switch (Roller Lever, SPDT, Snap Action)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Due to lighting and display variations, colors in product images may appear slightly different from the actual item. Measurement tolerance is ±1–3 mm.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does SPDT mean on these micro limit switches?\u003c\/h4\u003e\n\u003cp\u003eA: SPDT stands for Single Pole Double Throw. Each switch has three terminals — one Common (COM), one Normally Open (NO), and one Normally Closed (NC). This allows the switch to either open or close a circuit depending on the actuator position, making it highly versatile for a wide range of control and automation applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these micro limit switches compatible with 3D printers and CNC machines?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! These mini roller lever micro switches are widely used as end stops on 3D printers and limit switches on CNC routers and similar machines. Their compact 20 × 6 × 10 mm footprint and standard 2 mm mounting holes make them easy to install in tight spaces. The snap action mechanism ensures precise, repeatable triggering for accurate positioning.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the maximum voltage and current rating for these switches?\u003c\/h4\u003e\n\u003cp\u003eA: These micro limit switches are rated for AC 125V at 5A. They also comply with EU Low Voltage Directive (LVD) requirements for voltages below 50V AC or 75V DC, making them suitable for a broad range of low- to mid-voltage electronic and appliance applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I mount these mini micro switches?\u003c\/h4\u003e\n\u003cp\u003eA: Each switch features two mounting holes with a 2 mm diameter and 9 mm center-to-center spacing. Simply use M2 screws (not included) to secure the switch to your panel, chassis, or bracket. The 3-pin solder or spade terminals allow straightforward wiring to your circuit.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does SPDT mean on these micro limit switches?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"SPDT stands for Single Pole Double Throw. 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