CHAPTER 4
Power Supply Description
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Understanding the SRX4100 Power Supply on page 13
Understanding the SRX4100 Power Supply
The SRX4100 Services Gateway is shipped with two AC or two DC power supply units
preinstalled in the rear panel. Each power supply provides power to all components in
the services gateway. If one power supply fails or is removed, the remaining power supply
redistributes the electrical load without interruption. Each power supply is cooled by its
own internal cooling system.
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AC Power Supply on page 13
•
DC Power Supply on page 14
AC Power Supply
Each AC power supply weighs approximately 2.3 lb and consists of one AC appliance
inlet, a fan, and LEDs for monitoring the status of the power supply. The AC power supply
is a hot-insertable and hot-removable field-replaceable unit (FRU) when the second
power supply is installed and running. You can install the replacement power supply
without powering off the services gateway. The AC power supply gives an output of 650
W and supports both low line voltage (100–127 VAC) and high line voltage (200–240
VAC). Figure 7 on page 13 shows the AC power supply.
Figure 7: AC Power Supply
Figure 8 on page 14 shows the location of the LEDs on an AC power supply. Each AC
power supply faceplate contains three LEDs that indicate the status of the power supplies.
13Copyright © 2017, Juniper Networks, Inc.
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