Cisco Catalyst 3850 Hardware Installation Manual page 40

Power Supply Modules
• PWR-C1-715WAC
• PWR-C1-1100WAC
• PWR-C1-440WDC
The following power supply modules are applicable to only the WS-C3850-48XS switches:
• PWR-C3-750WAC-R: This module has red handles to match fans with red handles. Airflow is from the
front panel to the rear panel (warm air is 'pulled out of' the switch.)
• PWR-C3-750WAC-F: This module has blue handles to match fans with blue handles. Airflow is from
the rear panel to the front panel (cool air is 'pushed into' the switch.)
• PWR-C3-750WDC-R: This module has red handles to match fans with red handles. Airflow is from the
front panel to the rear panel (warm air is 'pulled out of' the switch.)
• PWR-C3-750WDC-F: This module has blue handles to match fans with blue handles. Airflow is from
the rear panel to the front panel (cool air is 'pushed into' the switch.)
The switch has two internal power supply module slots. You can use two AC modules, two DC modules, a
mixed configuration of one AC and one DC power supply module, or one power supply module and a blank
module.
The switch can operate with either one or two active power supply modules or with power supplied by a stack.
A Catalyst 3850 switch that is in a StackPower stack can operate with power supplied by other switches in
the stack.
Switch Models, on page 1
power supply modules (except the blank modules) have internal fans. All switches ship with a blank power
supply module in the second power supply slot.
Caution Do not operate the switch with one power supply module slot empty. For proper chassis cooling, both power
supply module slots must be populated with either a power supply or a blank module.
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.
Each AC power supply module has a power cord for connection to an AC power outlet. The 1100-W and
715-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The
DC-power supply module must be wired to a DC-power source.
The following tables show the PoE available and PoE requirements for Catalyst 3850 PoE switch models.
Table 13: Available PoE with AC Power Supply
Models
12-port data switch
24-port data switch
48-port data switch
Catalyst 3850 Switch Hardware Installation Guide
26
shows the default power supply modules that ship with each switch model. All
Default Power Supply
PWR-C1-350WAC
Product Overview
Available PoE
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OL-26779-05