Allen-Bradley 800T-J91B 3 Pos. Spring Return Knob

Allen-Bradley 800T-J91B is a 30 mm diameter, three-position selector switch designed for front-panel mounting, featuring a white-insert knob and a spring return from both ends to the center position. This DPDT device provides two normally open and two normally closed contacts and ships with a KB7 cam for precise detent action. As part of the 800T family, it fits standard 30 mm cutouts and is compatible with other 800T contact blocks and cams to form a complete selector switch assembly. The J91B variant specifically delivers a 3-position knob configuration for reliable center-off indexing in machine controls, safety interlocks, and process equipment where a quick return to center is required.