ABB CA5-04E Auxiliary Contact

ABB CA5-04E Auxiliary Contact Block is a 4-pole, front-mounted auxiliary contact block designed to attach to ABB A-series contactors. It uses screw terminals for fast, secure wiring and provides 0 normally open (NO) and 4 normally closed (NC) instantaneous contacts, suitable for signaling and interlock applications in standard industrial environments. Catalog number 1SBN010040R1004 corresponds to this CA5-04E variant, which is engineered to align with the A-series marking for A30-00, A40-00, and A22-00 style contactors, ensuring straightforward mechanical compatibility when mounted on the front of the main device. As part of the CA5 family, the block adds four NC signaling contacts without adding any NO contacts, enabling straightforward status indication or interlocking without altering the main power path. The compact form and screw-terminal access support reliable field wiring in panel installations where space and quick connections matter.