Siemens end cap for 2-3 phase busbars. Additional components for residual current devices and circuit breakers from Siemens. Siemens' additional components are an important part of the SENTRON protective devices for electrical installations. As accessories for RCDs and circuit breakers, they offer many possibilities for implementing various functions. Whether for infrastructure or industrial applications, Siemens provides the right accessories for all RCDs and circuit breakers. This way, you have the appropriate device for every requirement. The Siemens accessories for residual current and circuit breakers are characterized primarily by: 1. Universal compatibility of all additional components. 2. Convenient and simple assembly 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 protective, switching, measuring, and monitoring devices, as well as distribution systems for a safe and efficient electrical infrastructure in buildings and industry.