7SR5721-2AA22-0AA0Brand: SiemensMPN: 7SR5721-2AA22-0AA0Motor prot. 7SR57 8 curr. trans., 4 volt. trans., 17 BI, 10 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x optical LC ports, S8 enclosureRequest a quote