This Harmony XB5N/XB7N single contact block uses screw clamp terminals. The single-contact block features protected terminals. It is easily installed and replaced on XB5N/XB7N complete push-button units and selector switches via a clip assembly and connects to control circuits with simple screw-clamp connections. It protects operators from unexpected contact with live circuits thanks to its IP20 protection index. It has a clear color scheme. It is an IP65-rated product. It offers mechanical durability of about 5 million operating cycles and electrical durability of about 1 million operating cycles. It is made of a plastic fixing collar with an AgNi contact. It weighs 0.011kg. It is used by machine manufacturers (automotive, textiles, and timber) and control system panel builders. It is also suitable for service sector and infrastructure applications such as energy distribution panel builders and public works. This product is certified by UL. It complies with IEC 529 standards. The modular Harmony XB4 range of 22mm metal control and signalling units combines simplicity of installation, efficiency, modern design, flexibility, and robustness to meet most industrial applications.