FSMRA1JHA04 is a miniature momentary pushbutton switch designed for low-power electronic control applications. The switch features copper alloy contacts with silver plating on both moving and fixed contact surfaces, providing excellent electrical conductivity and corrosion resistance. It is rated for a maximum contact current of 50 milliamps at 24V DC and a minimum contact rating of 10 microamps at 1V DC, with an initial contact resistance of 100 milliohms maximum and insulation resistance of 100 megohms at 100 VDC. The switch offers a mechanical life expectancy of 100,000 cycles and operates reliably across a temperature range of -35°C to +85°C. Its compact design with nylon 6/6 case and steel frame makes it suitable for consumer electronics, industrial control panels, and instrumentation where space is limited and reliable momentary switching is required.