The ILME article number CKSHF 04 defines the product socket insert, size 21.21, 4P+PE, silver, SQUICH, 10A, 400V. The contact insert of the CKSH series is equipped with the patented ILME quick connection technology SQUICH. This connection technology offers an intuitive and fast connection of the connector. In addition to saving up to 50% time compared to traditional screw connection technology, the cage spring contacts of the SQUICH technology are completely vibration-resistant and maintenance-free, making them suitable for applications in the EN 61373 area. The additional test opening of the connection buttons allows the user to measure and test in the connected and installed state of the connector. The same specifications and contours as the CNE, CCE, CSE, and CSS series enable a wide range of applications for this contact insert.