7SR5421-6AF26-2AA0Brand: SiemensMPN: 7SR5421-6AF26-2AA0Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 8 TSI (Temperature Sensor Input), 37 BI, 18 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x Request a quote