Dc Power Supply In Ex4100 Switches - Juniper EX4100 Hardware Manual

DC Power Supply in EX4100 Switches

IN THIS SECTION
Characteristics of a DC Power Supply | 78
Specifications of the DC Power Supplies Used in EX4100 Switches | 80
DC Power Supply Airflow | 80
EX4100 switches are shipped with one power supply installed in the rear panel of the switches. You can
install up to two power supplies in an EX4100 switch. The power supply slots are numbered 0 and 1,
and each slot has a power icon next to it. The power supplies support front-to-back airflow directions
and are fully redundant, load-sharing, hot-removable and hot-insertable field-replaceable units (FRUs)
when the second power supply is installed and running: You can remove and replace them without
powering off the switch or disrupting switch functions. This topic describes the DC power supplies that
EX4100 switches support.
Do not mix:
• AC and DC power supplies in the same chassis.
• Power supplies with different airflow directions in the same chassis.
• Fan modules with different airflow directions in the same chassis.
• Power supplies and fan modules with different airflow directions in the same chassis.
Characteristics of a DC Power Supply
The DC power supplies for EX4100 switches are available in 150 W model. EX4100-48T-DC,
EX4100-24T-DC support 150 W DC power supplies. You can install up to two DC power supplies in an
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