Shunt release 110-415V AC for miniature circuit breakers 5SL4, 5SY, 5SP, FI/LS 5SU1, FI 5SV (5SU1 requires handle connector 5ST3805-1) Shunt release SENTRON 5ST3 as an additional component for residual current devices and miniature circuit breakers. These additional components can be mounted universally. They are easy and convenient to install and connect. Thanks to the standard touch protection, safety during installation is reliably guaranteed. Optimum technology for your safety - only from Siemens.