DC Power Supply in Junos Space Appliances
This topic applies to the following Junos Space Appliances: JA1500 and JA2500.
A Junos Space Appliance ships with a single AC power supply module. However, you can use a DC power supply, shown in Figure 1, to power the appliance.
While it is possible to provide redundancy in the Junos Space Appliance using a combination of AC and DC power supply modules, we recommend that you do not provide redundancy in this manner. Instead, use two DC power supply modules or two AC power supply modules if you want to provide redundancy.
Table 1 shows details of the DC power supply module for a Junos Space Appliance.
Table 1: Details of a DC Power Supply Module
Field-Replaceable Unit type
Cold-swappable, if the appliance has only one power supply module
Hot-swappable, if the appliance has an additional redundant, functioning power supply module that is plugged into a separate power circuit
Power supply weight
2.60 lb (1.18 kg)
One internal fan per power supply module
From the front of the chassis to the back
Power Supply Module (Status) LED
One Power Supply Module LED present on the power supply faceplate:
Maximum Output Power
DC Maximum Current
DC Power Module
–45 V to –60 V
DC Power Supply Peak inrush
< 60 A
Power Module Maximum Efficiency
80Plus 560 W cDC