Fan Speed and Temperature Variation
The speed of the fan increases only when the temperature of the device increases. Fan speed is not
dependent on any fan failures.
Table 42: 5520 Fan Speed and Power Consumption
Fan Speed
Fan Module RPM (typical)
Power
Inlet Fan
Outlet Fan
Typical
Full (100%)
21000 (typ)
19000 (typ)
12V*1.7A = 20.4W per
module*
Low (20%)
4200 (typ)
3800 (typ)
2W (per module)
* Some units are equipped with (2) fan module, while others are equipped with 3. Total fan power is
equal to the number of installed fan modules multiplied by the fan power for each module.
Power Options
Refer to the
for up-to-date PoE Power Budget and Power Consumption information.
Table 43: 5520 Power Supply Options
Switch model
Power supply
Input rating
5520-24T switch
5520-24X switch
5520-48T switch
350 W AC power supply:
Part no. 10953 350 W AC PS FB (front-to-back)
Model PSSF351101A
100-127 V 200-240 V
50-60 Hz, 2.0/1.0 A
max per PS
5520-48SE switch
350 W AC power supply:
Part no. 10953 350 W AC PS FB (front-to-back)
Model PSSF351101A
100-127 V 200-240 V
50-60 Hz, 2.5/1.5 A max
per PS
5520-24W switch
5520-12MW-36W
switch
5520-48W switch
715 W AC power supply:
Part no. 10951 715 W AC PS FB (front-to-back)
Model PSSF711101A
100-127 V 200-240 V
50-60 Hz, 9/4.5 A max
per PS
5520-24W switch
5520-12MW-36W
switch
5520-48W switch
1100 W AC power supply:
Part no. 10941 1100 W AC PS FB (front to back)
Model PSSF112101A
100-127 V 200-240 V
50-60 Hz, 12/6 A max
per PS
5520-24W switch
5520-12MW-36W
switch
5520-48W switch
2000 W AC power supply:
Part no. XN-ACPWR-200W-F 2000 W AC PS FB
(front to back)
Model PSSF202101A
100-127 V 200-240 V
50-60 Hz, 12/10 A max
per PS
Technical Specifications
Fan Speed and Temperature Variation
ExtremeSwitching 5520 Series Hardware Installation Guide
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