3SU1030-4BF01-0AA0 SIEMENS3SU10304BF010AA0

RONIS key-operated switch, 22 mm, round, plastic with metal front ring, lock number SB30, with 2 keys, 2 switch positions O-I, latching, actuating angle 90°, 10:30h/13:30h, key removal O, possible special locks: SB31, 421, 455