Handle connector for residual current devices 5SU1 T=70mm for attaching additional components (1 set=5 pieces in a polybag) Handle connector SENTRON 5ST3 as an additional component for residual current devices and circuit breakers. These additional components can be attached universally. They can be installed and connected easily and conveniently. Thanks to the standard touch protection, safety during installation is reliably guaranteed. Optimum technology for your safety - only from Siemens.