Power Supplies

Each Juniper Networks M-series router and T-series platform has one, two, or four load-sharing power supplies. A single power supply can provide full power while the router is operational. The power supplies are redundant: if a power supply is removed or fails, the other power supplies automatically assume the electrical load. For more information about the redundant power supplies in each router, see "Power Supplies" in the router platform-specific hardware guide.

The power supplies are connected to the router midplane (on an M40 router, to the router backplane), which distributes the different output voltages throughout the router and its components. Some routers can operate using either AC and DC power; other routers operate with DC power only. For information about the type of power used by each router, see the "Electrical Specifications" table in the router platform-specific hardware guide.