The auxiliary contact blocks are used in the switching of auxiliary and control circuits in standard industrial environments. Types of auxiliary contact blocks for front mounting: CA4 1 or 4-pole block with instantaneous closing and opening contacts, CC4 1-pole block with leading closing and lagging opening contacts, CAT4 2-pole block with 1 instantaneous closing and 1 opening contact and connection for A1 / A2 coil terminals at the front. Choose the type of 4-pole CA4-..E, CA4-..M, CA4-..U, or CA4-..N auxiliary contact blocks for the respective contactor or auxiliary contactor type based on standard requirements. Types of auxiliary contact blocks for side mounting: CAL4 2-pole block with instantaneous closing and opening contacts. For mounting on the right or left side of the contactor. The auxiliary contact blocks with open screw terminals in the delivery state are protected against accidental contact and have the corresponding functional labeling.