End cap for single-phase busbars. Additional components for residual current protective devices and circuit breakers from Siemens. Siemens' additional components are an essential part of the SENTRON protective devices for electrical installations. As accessories for RCDs and circuit breakers, they offer many options for implementing various functions. Whether for infrastructure or industrial applications, Siemens provides the right accessories for all RCDs and circuit breakers, ensuring you have the appropriate device for every requirement. Siemens accessories for residual current and circuit breakers are characterized by: 1. Universal compatibility of all additional components. 2. Comfortable and easy installation and connection technology. 3. Reliable safety during installation thanks to standard touch protection. 4. Optimal technology for your safety - exclusively from Siemens. Siemens offers a comprehensive portfolio of protection, switching, measuring, and monitoring devices, distribution systems, as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.