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Table 7. Cisco Catalyst 4500 Series Data Only Power Supply Specifications
Power Supply 1000W AC 1400W AC 1400W DC Triple Input
Integrated PoE No (data only) No (data Only) No (data only)
IEEE 802.3af-compliant PoE No No No
Input current (rated) 12A @ 100 VAC,
5A @ 240 VAC
16A @ 100 VAC,
7A @ 240 VAC
2x –48 VDC @ 15A
1x –48 VDC @ 12.5A
Output current (data) 12V @ 83.4A
3.3V @ 12.2A
12V @ 113.4A
3.3V @ 12.2A
12V @ 114.0A
3.3V @ 12.5A
Output current (PoE) – – –
Output power redundant mode (data) 1000W + 40W 1360W + 40W 1368W + 40W
Output power redundant mode (PoE) – – –
Output power combined mode (data) 1667W – –
Output power combined mode (PoE) – – –
Heat dissipation* 943 Btus per hour 1048 Btus per hour 1048 Btus per hour
Holdup time 20 ms 20 ms 4ms
Number of 802.3af Class 2 power
devices supported with 1 power
supply (1+1)
– – –
Number of 802.3af Class 0 and 3
power devices supported with 1
power supply (1+1)
– – –
Cisco phones with Integrated PoE None – –
Hot swappable Yes Yes Yes
* Note that calculations for heat dissipation is based on one power supply operating at maximum output power.
Table 8. Cisco Catalyst 4500 Series PoE Power Supply Specifications
Power Supply 1300W AC 2800W AC 1400W DC-P 4200W AC 2500W AC
Integrated PoE Yes (Up to 800W) Yes (Up to 1400W) Up to 8500W (minus the
power consumed for data
when connected directly to
a DC power plant or 2
external AC power shelves
Yes (Up to 3700W) 2500W per
power supply
IEEE 802.3af-
compliant PoE
Yes Yes Yes Yes Yes
