7SR5111-2AA22-0AA0Brand: SiemensMPN: 7SR5111-2AA22-0AA0Directional overcurrent time prot. 7SR51 4 curr. trans., 4 volt. trans., 14 BI, 10 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x optical LC ports,Request a quote