7SR5421-6AA26-2AA0Brand: SiemensMPN: 7SR5421-6AA26-2AA0Transformer protection (2 wdg.) 8 curr. trans., 4 volt. trans. 37 BI, 18 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x optical LC interf. S12 enclRequest a quote