The CA5-22E is an auxiliary contact block designed for front mounting on ABB A9 through A110 and AE9 through AE110 series contactors. It provides two normally open (N.O.) and two normally closed (N.C.) contacts to expand the control and signaling capabilities of the host device. This snap-on accessory has a rated insulation voltage of 690V (IEC) and a conventional thermal current of 16A. It is commonly used in industrial control systems for applications requiring additional feedback, status indication, or electrical interlocking.