3-2
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01
Chapter 3 Power Supply and Fan Module Installation
Power Supply Module Overview
Note A 48-port switch with one 715-W power supply provides up to 7.7 W of PoE to all ports.
The 350-W and 715-W AC power supply modules are autoranging units that support input voltages
between 100 and 240 VAC. The 1100-W power supply module is an autoranging unit that supports input
voltages between 115 and 240 VAC. The 440-W DC power supply module has dual input feeds (A and
B) and supports input voltages between 36 and 72 VDC. The output voltage range is 51 to 57 V.
Ta b l e 3-1 Power Supply Module Part Numbers and Descriptions
Part Number Description
C3KX-PWR-1100WAC=
C3KX-PWR-1100WAC-JP=
1
1. This module is used only in Japan.
1100-W AC power supply module
C3KX-PWR-715WAC= 715-W AC power supply module
C3KX-PWR-350WAC= 350-W AC power supply module
C3KX-PWR-440WDC= 440-W DC power supply module
C3KX-PSBAY-BLNK Blank cover
Ta b l e 3-2 Power Supply Modules Used with PoE and PoE+ Switch Models
Power Supply Module
48-Port PoE+
Switch
1
1. For full 15.4W support on a 48-port PoE+ switch, you must use a C3KX-PWR-1100WAC power supply module.
24-Port PoE+
Switch
48-Port
Non-PoE+
Switch
24-Port
Non-PoE+
Switch
C3KX-PWR-1100WAC=
C3KX-PWR-1100WAC-JP=
2
2. This module is used only in Japan.
Primary or spare Spare Spare Spare
C3KX-PWR-715WAC= Spare Primary or spare Spare Spare
C3KX-PWR-350WAC= Spare Spare Primary or spare Primary or spare
C3KX-PWR-440WDC= Primary or spare Primary or spare Primary or spare Primary or spare
C3KX-PSBAY-BLNK Blank module Blank module Blank module Blank module
Ta b l e 3-3 Switch Power Supply Requirements for PoE and PoE+
PoE Option 24-Port Switch 48-Port Switch
PoE (up to 15.4 W per port) one 715-W power supply
two 440-W DC power supplies
one 1100-W power supply
PoE+ (up to 30 W per port) one 1100-W power supply one 1100-W power supply plus one
715-W power supply
or
two 1100-W power supplies
