Mx240 Ac Power System; Mx240 Power System Description - Juniper MX240 Hardware Manual

Troubleshooting the MX240 Cooling System | 428

MX240 AC Power System

IN THIS SECTION

MX240 Power System Description | 46

MX240 AC Power Supply Description | 47
MX240 AC Power Supply LEDs | 49
AC Power Supply Electrical Specifications for the MX240 Router | 50
AC Power Circuit Breaker Requirements for the MX240 Router | 51
AC Power Cord Specifications for the MX240 Router | 51
Errata with the MX240 Router Documentation | 54
MX240 Power System Description
The MX240 router uses either AC or DC power supplies. Each AC power supply provides power to all
components in the router. When two power supplies are present, they share power almost equally within
a fully populated system. If one power supply fails or is removed, the remaining power supply assumes
the entire electrical load without interruption. One power supply can provide the maximum configuration
with full power for as long as the router is operational.
CAUTION:
simultaneously.
The MX240 router is configurable with two, three, or four AC power supplies or one or two DC power
supplies. The power supplies connect to the midplane, which distributes the different output voltages
produced by the power supplies to the router components, depending on their voltage requirements. Each
power supply is cooled by its own internal cooling system.
Redundant power supplies are hot-removable and hot-insertable. When you remove a power supply from
a router that uses a nonredundant power supply configuration, the router might shut down depending on
your configuration.
The router cannot be powered from AC and DC power supplies
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