Key switch, 16 mm, round, plastic, Siemens, C, SB2, 2 switching positions O-I, latching, switching angle 62 degrees, key release O, possible special closures: SB3, SB4, SB5. SIRIUS 3SB2 key switch for a higher demand for access security. The push buttons and indicator lights 3SB2 are modular, proven in practice, and suitable for industrial use. Due to their compact design, they are particularly suitable for small control panels. They are highly functional, extremely robust, and comply with the standards IEC/EN 60947-5-1 and 60947-5-5. They can be installed without special tools and in a high packing density. Available versions: 2/3 switching positions, latching/push-button operation, various key release positions. Note: Single unit, holder, and switching elements must be ordered separately. 3SB2 - space-saving, proven in practice, and suitable for industrial use!.