7SR5421-3AD26-2AA0Brand: SiemensMPN: 7SR5421-3AD26-2AA0Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 3 AFD (Arc Flash Detector), 22 BI, 15 BO (incl. 3 HSBO) Standard interface: 1 x USB (front), RS 485 (reaRequest a quote