Datasheet

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Figure 3. Dual Redundant Power Supplies
Table 4 shows the different power supplies available in these switches and available PoE power.
Table 4. Power Supply Models
Models
Default Power Supply
Available PoE Power
24-port data switch
PWR-C1-350WAC
-
48-port data switch
24-port PoE switch
PWR-C1-715WAC
435W
48-port PoE switch
48-port full PoE switch
PWR-C1-1100WAC
800W
24-port UPOE switch
PWR-C1-1100WAC
800W
48-port UPOE switch
12-port SFP switch
PWR-C1-350WAC
-
24-port SFP switch
In addition to the power supplies listed in Table 4, a 440WDC power supply is available as a spare (should be
ordered separately) on all switch models. The DC power supply also delivers PoE capabilities for maximum
flexibility (refer to Table 5 for available PoE budget with DC power supplies). Customers can mix and match the AC
and DC power supplies in the two available power supply slots. Any of these power supplies can be installed in any
of the switches.
Table 5. Available PoE with DC Power Supply
Model
Number of 440WDC Power Supplies
Total Available PoE Budget
24-port PoE switch
1
220W
2
660W
48-port PoE switch
1
185W
2
625W
Power over Ethernet Plus (PoE+)
In addition to PoE (IEEE 802.3af), the Cisco Catalyst 3850 Series Switches support PoE+ (IEEE 802.3at standard),
which provides up to 30W of power per port. The Cisco Catalyst 3850 Series Switches can provide a lower total
cost of ownership (TCO) for deployments that incorporate Cisco IP phones, Cisco Aironet
®
wireless LAN (WLAN)
access points, or any IEEE 802.3at-compliant end device. PoE removes the need for wall power to each PoE-
enabled device and eliminates the cost for additional electrical cabling and circuits that would otherwise be
necessary in IP phone and WLAN deployments. Table 6 shows the power supply combinations required for
different PoE needs.