7SR5420-3BA22-2AA0Brand: SiemensMPN: 7SR5420-3BA22-2AA0Transformer prot. 7SR54 8 curr. trans., 21 BI (standard), 10 BO (incl. 4 HDBO (Heavy Duty)), Standard interface: 1 x USB (front), RS 485 (rear) + 2 x optical LCRequest a quote