The Wago-Protect 10/100 Mb Ethernet surge suppressor protects industrial machinery network components. This high-speed, high-current, solid-state DIN-rail mount device is designed to protect critical equipment from transient over-voltages common on high-speed data lines. It is equipped with RJ45 connectors to provide continuous bi-polar, bi-directional, noninterrupting protection and uses silicon junction avalanche suppressor diodes to reset automatically after each suppression function. The device also attaches in series with the load to be protected and has an operating temperature range of -40 to 85 °C.