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
Power supply weight
Minimum installed in chassis
Maximum installed in chassis
56
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 56
DC Power Supply Airflow on page 57
N+0 Redundancy Configuration of DC Power Supplies on page 57
N+N Redundancy Configuration of DC Power Supplies on page 58
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 56 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
2.43 lb (1.1 kg)
1
2
AIR IN (AFI)
) in the same chassis.
Figure 33 on page
PSU 0 and PSU 1 in the rear panel of the chassis.
Copyright © 2015, Juniper Networks, Inc.
and AIR OUT (AFO) )
AIR IN (AFI)
56). The DC