The Harmony XB4/ZB4 series made of metal offers a wide range of 22 mm and 30 mm control and signaling devices such as push buttons, indicator lights, and selector switches, up to emergency stop switches. Due to the modular design of the devices, all components can be obtained as individual elements, in assemblies, or as complete devices. Thanks to their quality, flexibility, and extreme robustness (protection classes up to IP69K), these devices are ideal for most applications in industry and buildings. This auxiliary contact block is compatible with the 22 mm and 30 mm devices and features a normally closed contact. The connection of the auxiliary contact block is made via screw terminals. Mounting is done using a shock-resistant connection screw. Delivery is in bulk packaging. In addition to high vibration resistance and a very long service life, the devices of the XB4/ZB4 series also impress with an extremely high possible ambient temperature. Due to the variety of existing product standards and certifications, they are suitable for international use. Thanks to the Green Premium environmental label, you can obtain detailed information on material contents, environmental impacts, and circular economy, which support your sustainability goals.