The CA4-11ERT is an auxiliary contact block designed to be mounted on contactors to provide additional signaling and interlocking contacts. It has a rated insulation voltage (Ui) of 690 V and a conventional thermal current (Ith) of 16 A. The block is compliant with IEC 60947-5-1 and UL 508 standards, featuring a pilot duty rating of A600/Q600. Its AC-15 operational current ratings are 6 A at 24-127 V and 3 A at 400-440 V, while its DC-13 ratings include 6 A at 24 V and 0.55 A at 125 V. With a high mechanical durability of 10 million operating cycles and mechanically linked contacts, this block is suitable for reliable use in industrial control circuits, motor starters, and automation systems requiring feedback and interlocking functions.