KW12-3 Micro Limit Switches — 10 pieces Key benefits Reliable position control: Designed to accurately detect and control the movement or end-of-travel of mechanical parts, reducing misalignment and accidental operation. Compact and precise: Small size, short stroke, and a high-precision switching mechanism allow installation in tight spaces and deliver repeatable, fast switching. Low wear, long life: Copper contact material and a durable plastic shell with a quick switching mechanism reduce contact erosion and mechanical fatigue. Easy integration: Standard 3-pin connector and AC rating make these switches compatible with many control circuits and appliances. What it does and why you need it Provides momentary (instantaneous) switching for position sensing or limit detection whenever a mechanical actuator contacts the external drive rod. Converts a small physical movement into a reliable electrical signal with minimal actuation force and short contact distance — useful for applications that require sensitive, repeatable detection. Helps prevent overrun and protects mechanical systems by signaling end-of-travel or triggering control actions quickly and consistently. Key specifications Model: KW12-3 Quantity: 10 pieces Contact material: Copper Connector: 3-pin Rated voltage: AC 125V–250V Rated current: 5A Action type: Momentary Construction: Plastic shell, external drive rod, micro-contact mechanism with quick switching and short stroke Standout features Compact footprint for installation in confined areas Small contact distance and short stroke for fast, sensitive response Larger torque transfer with low required pressure for actuation Quick connect/disconnect capability for faster assembly or maintenance Precision internal mechanism for consistent operation and extended service life Practical applications (examples) 3D printers and CNC machines: Use as endstops or position sensors to detect axis limits and home positions where compact, sensitive switches are needed. Small appliances and vending equipment: Detect door or latch positions and control dispensing mechanisms with reliable momentary switching. Conveyor systems and industrial automation: Serve as limit switches for end-of-travel detection, part present sensing, or safety interlocks in space-constrained assemblies. Installation notes Mount where the external drive rod will be actuated by the machine part at the intended travel limit. Use the 3-pin connector for straightforward wiring into AC control circuits rated up to 125–250V and 5A. Ensure actuation force and travel are compatible with the switch’s short stroke to achieve reliable switching and long life. This set of 10 KW12-3 micro limit switches offers a practical, compact solution for precise position sensing and limit control in a wide range of mechanical and electrical systems.