7SR5421-2BA22-1AA0Brand: SiemensMPN: 7SR5421-2BA22-1AA0Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 17 BI, 10 BO (incl. 3 HDBO (Heavy Duty)), Standard interface: 1 x USB (front), RS 485 (rear) + 2 x opticRequest a quote