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C4KX-PWR-750AC-R/2 Overview

The Cisco C4KX-PWR-750AC-R/2 Catalyst 4500X 750W AC front to back cooling 2nd power supply.

Quick Specs

Figure 1 shows the appearance of C4KX-PWR-750AC-R/2.


Table 1 shows the Quick Specs.

Product Code


AC-input type

Autoranging input with power factor correction (PFC)

AC-input voltage

100 to 240 VAC (115/230 VAC nominal) single-phase

AC-input current

11 A @ 100 VAC (max)
6 A @ 200 VAC (max)

AC-input frequency

47 to 63 Hz (50/60 Hz nominal)

Branch circuit requirement

Each chassis power supply should have its own dedicated, fused-branch circuit:

            *For North America—15 A
            *For International—Circuits should be sized to local and national codes
            *All AC power supply inputs are fully isolated.
          *Source AC can be out of phase between multiple power supplies in the same chassis, which means that PS1 can be operating from phase A and PS2 can be operating from phase B.

Power supply output capacity

750 W

Power supply output

12 VDC @ 62 A
3.3 VDC @ 3 A

Output holdup time

16 ms minimum (20 ms @ 60% load)

BTU (total output)

1122 BTU/hour (nominal)

1365 BTU/hour (max)

AC-input power supply dimensions
(H x W x D)

1.57 x 2.15 x 14.28 in 
(3.99 x 5.46 x 36.27 cm)


2 lb (0.91 kg)


Brand Cisco
Shipping Weight 1.0000kg

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