7SR5421-3AA16-1AA0Brand: SiemensMPN: 7SR5421-3AA16-1AA0Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 22 BI, 12 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x RJ45 interfaces, S12 enclosure, inRequest a quote