RGS-PR9000 is Layer-3 modular managed redundant ring Ethernet switch with 4 slots. The switch is designed for power substation application and rolling stock application, fully compliant with the requirement of IEC 61850-3 and IEEE 1613. With completely support of Ethernet Redundancy protocol, O-Ring (recovery time < 30ms over 250 units of connection) and MSTP (RSTP/STP compatible) can protect your mission-critical applications from network interruptions or temporary malfunctions with its fast recovery technology. And support wide operating temperature from -40 oC to 85 oC (If use 10G SFP module then operating temperature is -20°C - 60°C). RGS-PR9000 can also be managed centralized and convenient by Open-Vision, as well as the Web-based interface, Telnet and console (CLI) configuration. Therefore, the switch is one of the most reliable choice for substation automation and rolling stock application. 
Features
Designed for power substation / railway application
Fully compliant with the requirement of IEC 61850-3 and IEEE 1613
Modular designed makes network planning easy
Supports Layer 3 routing, RIP and static routing
Supports O-Ring (recovery time < 30ms over 250 units of connection) and MSTP (RSTP/STP compatible) for Ethernet Redundancy
O-Chain allow multiple redundant network rings
Support standard IEC 62439-2 MRP (Media Redundancy Protocol)
Support IEEE 1588v2 clock Synchronization