7SR5420-3AF22-2AA0Brand: SiemensMPN: 7SR5420-3AF22-2AA0Transformer prot. 7SR54 8 curr. trans., 8 TSI (Temperature Sensor Input), 21 BI, 10 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x optical LC portsRequest a quote