The 05.511.2953.0 is a test socket accessory designed for use with Wieland Electric's PC board connectors and terminal block systems. This gray-colored test socket (type SB 4 GRAU) is part of the comprehensive accessory lineup for wiecon PCB connector systems with 5.00 mm and 5.08 mm spacing configurations. The test socket facilitates convenient testing and measurement of electrical connections without requiring permanent modifications to the installed connectors. It is supplied in standard packs and integrates seamlessly with various Wieland connector types including the 8113, 8213, 8313, and 8413 series. This accessory is commonly used in industrial control applications, DIN rail-mounted systems, and modular electrical interconnect solutions where quick access to test points is essential.