Filler piece for N-automatic additional components for residual current devices and circuit breakers from Siemens. The additional components from Siemens are an important part of the SENTRON protective devices for electrical installations. As accessories for residual current devices and circuit breakers, they offer many options for implementing various functions. Whether for infrastructure or industrial applications, Siemens offers the right accessories for all residual current devices and circuit breakers. This means you have the right device for every requirement. The Siemens accessories for residual current devices and circuit breakers are characterized above all by: 1. Universal attachment of all additional components. 2. Convenient and simple installation and connection technology. 3. Reliable safety during installation thanks to standard touch protection. 4. Optimum technology for your safety - only from Siemens.