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
shows the default power supply modules that ship with each switch model. All
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.
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.
Caution
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
Available PoE
Default Power Supply
Models
—
PWR-C1-350WAC
12-port data switch
24-port data switch
48-port data switch
435 W
PWR-C1-715WAC
24-port PoE+ switch
48-port PoE+ switch
800 W
PWR-C1-1100WAC
48-port full PoE+ switch
24-port Cisco UPOE switch
48-port Cisco UPOE switch
Catalyst 3850 Switch Hardware Installation Guide
OL-26779-05
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Product Overview
Power Supply Modules
