Siemens 7SR5111-1AA11-0AA0

The Siemens 7SR5111-1AA11-0AA0 is a directional time-overcurrent protection device designed for reliable fault detection in power systems. This model of the 7SR51 series supports four current transformers and four voltage transformers, enabling precise measurement and enhanced protection capabilities. It features nine binary inputs and eight binary outputs, providing flexible integration with control and monitoring systems. The device includes a standard communication interface comprised of one front USB port, an RS485 connection at the rear, and two RJ45 ports, supporting versatile connectivity options. Housed in an S6 enclosure, this protection relay is well-suited for demanding industrial environments. BSP Automation offers this Siemens protection relay as part of their extensive industrial automation solutions.