YCZ3C electromagnetic button switch with undervoltage protection delivers stable operation even when the supply voltage is low. It functions as a slicer with waterproof features, making it suitable for environments where moisture may be present. This switch serves as a starter power supply and comes with a cover, providing added protection and convenience. It can be used as a replacement for KJD17B, featuring a 4-pin configuration and compatibility with 220V. The YCZ3C with cover offers a reliable, practical solution for electrical control needs, combining functionality and durability. Practical applications: - Control panels for industrial equipment operating on 220V, where undervoltage protection helps prevent unintended starts. - Outdoor or damp environments such as irrigation systems, gates, or outdoor machinery that require waterproof capability. - Replacing KJD17B in existing 4-pin 220V circuits, providing a plug-in compatible option with protective cover.