Characteristics Of A Dc Power Supply; Figure 33: Dc Power Supply For An Ex4300 Switch; Table 36: Details Of The Dc Power Supplies In Ex4300 Switches - Juniper EX4300 Hardware Manual

EX4300 Switch Hardware Guide

Characteristics of a DC Power Supply

Table 36: Details of the DC Power Supplies in EX4300 Switches

Details
Model number
Field-replaceable unit (FRU) type
58
CAUTION: Do not mix:
AC and DC power supplies in the same chassis
Power supplies with different airflow labels (
) in the same chassis.
(AFO)
Fan modules with different airflow labels (
in the same chassis.
Power supplies and fan modules with different airflow labels (
and
AIR OUT (AFO)
This topic includes:
Characteristics of a DC Power Supply on page 58
DC Power Supply Airflow on page 59
N+0 Redundancy Configuration of DC Power Supplies on page 60
N+N Redundancy Configuration of DC Power Supplies on page 60
EX4300 switches support 550 W DC power supply (see
power supplies support Power over Ethernet (PoE+) in EX4300-24P, EX4300-24P-S,
EX4300-48P, and EX4300-48P-S models.

Figure 33: DC Power Supply for an EX4300 Switch

You can install up to two DC power supplies in an EX4300 switch. Power supplies are
installed in the power supply slots labeled
Table 36 on page 58 lists the details of the 550 W DC power supplies used in EX4300
switches.
550 W DC Power Supply
JPSU-550-DC-AFO-A
JPSU-550-DC-AFI-A
Hot-insertable and hot-removable
AIR IN (AFI)
) in the same chassis.
Figure 33 on page
and in the rear panel of the chassis.
PSU 0 PSU 1
Copyright © 2017, Juniper Networks, Inc.
AIR IN (AFI) and AIR OUT
and
AIR OUT (AFO)
AIR IN (AFI)
58). The DC
)