Springer controls n7svu0322, 30mm 3-position lever, 1-0-2, spring returned to center, 2 n.o. 2 n.c. this oil-tight 3-position selector is designed to fit in an industry standard 30 mm panel hole. 2 normally open and 2 normally closed contact are included. Please reference the contacts by position column to find the right selector for the job.