Key-operated switch, 16 mm, round, plastic, CES, SB2, 2 switch positions O-I, latching, actuating angle 62 degree key removal O, possible special locks: SB3, SB4, SB5 Key-operated switches SIRIUS 3SB2 for meeting higher demands for access security. The industry-standard 3SB2 pushbuttons and indicator lights have a modular design and are proven in practice. Thanks to their compact design, they are particularly suitable for small control panels. They are extremely functional and rugged, and comply with the IEC/EN 60947-5-1 and 60947-5-5 standards. They can be installed with a high packing density and without the need for any special tools. Versions available: 2/3 switching positions, latching/momentary contact operation, various key removal positions. Note: Please order individual device, holder and contact blocks separately. 3SB2 – Space-saving, proven in practice and industry standard!