3-phase pin busbar, 1016 mm long, touch-safe, 18 mm2 without end caps, according to UL 508 SENTRON 5ST3 pin busbar as an additional component for residual current devices and 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.