The Eaton Cutler-Hammer 30MM Push Button Switch (Model: MSAA185998) features a momentary action with a normally closed (1NC) configuration. This switch is designed for industrial applications, providing a reliable control interface. Constructed from durable materials, it ensures long-lasting performance even in harsh environments. The 30mm diameter fits standard mounting requirements, making installation straightforward. This push button switch is perfect for maintenance tasks, allowing for quick and efficient operation in various control systems.