Ex4200 Power System; Power Supply In Ex4200 Switches - Juniper EX4200 Hardware Manual

The fan tray used in an EX4200 switch comes with load-sharing redundancy that can tolerate a single fan
failure at room temperature (below 45° C/113° F) to still provide sufficient cooling.
Temperature sensors in the chassis monitor the temperature within the chassis. The system raises an alarm
if the fan fails or if the temperature inside the chassis rises above permitted levels. If the temperature
inside the chassis rises above the threshold, the system shuts down automatically and the temperature
shutdown LED on the rear panel is lit. You can see the status of fans and the temperature from the Show
Environment Status option in the Status menu in the LCD panel.
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Clearance Requirements for Airflow and Hardware Maintenance for EX4200 Switches | 69

EX4200 Power System

IN THIS SECTION

Power Supply in EX4200 Switches | 47

AC Power Supply LEDs in EX4200 Switches | 52
DC Power Supply LEDs in EX4200 Switches | 52
Power Specifications for EX4200 Switches | 53
AC Power Cord Specifications for EX4200 Switches | 54
Power Supply in EX4200 Switches
IN THIS SECTION
AC Power Supplies | 48
DC Power Supplies | 49
PoE Power Budget and AC Power Supplies | 50
47