7SR5111-1AD21-2AA0Brand: SiemensMPN: 7SR5111-1AD21-2AA0Directional time-overcurrent protection 7SR51, 4 curr. trans., 4 volt. trans., 9 BI, 11 BO (incl. 3 HSBO), 3 AFD (Arc Flash Detector), Standard interface: 1 x URequest a quote