7SR5421-2AA12-1AA0Brand: SiemensMPN: 7SR5421-2AA12-1AA0Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 17 BI, 10 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x RJ45 interfaces, S8 enclosure, incRequest a quote