22MM 2/3 Position Maintained Rotary Key Switch 600V 10A 1NO/2NO Latching/Momentary

LA139A Series 22mm Key Switch The LA139A Series Key Switch is a robust, secure, and easy-to-install industrial-grade control component. Its flame-retardant housing, replaceable pure silver contacts, and design for harsh environments make it an ideal choice for electrical control applications requiring access management and high durability. The switch’s specifications include: Operation Mode: ON-OFF Current Rating: 10 Amps Operating Voltage: 600 Volts AC Contact Type: Normally Open (1NO/2NO) Position: 2/3 Positions Connector Type: Crimp Terminal Type: Screw Terminal Main Material: Plastic Panel mounting diameter:22mm / 0.87"; Fit panel thickness: Max 4mm / 0.16"; Total size: 30x30x6.6mm / 1.18" x 1.18" x 2.6" (L*W*H) Construction & Material Features Flame-Retardant Housing: Made from high-temperature resistant and flame-retardant plastic, protecting internal components for extended operational life and oxidation resistance. Silver Contact Base: Utilizes pure silver contacts, ensuring reliable performance under a 10 Amp current load. The contact base is detachable from the switch head, allowing for easy replacement and maintenance. Internal Connection: Features a metal coil and employs a convenient, quick-installation connection method. Installation and Application Easy Installation: Simple design with easy-to-connect terminals facilitates a faster and more efficient installation process, saving time. Series Compatibility: Standard Φ22mm mounting dimension. Compatible and can be combined with various function modules of the same series (e.g., momentary/maintained buttons, illuminated buttons, selector switches, key-lock selector switches, emergency stop buttons, mushroom head buttons). This switch is widely used in industrial automation control systems to operate: Electromagnetic Starters, Contactors, Relays, Other automatic control electrical circuits.