Power Supply Specifications

Table 2 lists and describes the electrical specifications for the 750 W AC-input power supply.

Table 2	Electrical Specifications, 750 W AC-Input Power Supply

Specification		Description

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)1		1122 BTU/hour (nominal)
		1365 BTU/hour (max)

1. 1000 BTU/hour = 293 W

Catalyst 4500-X AC-Input Power Supply Installation Note

	OL-26535-01	13

Cisco Systems C4KX-PWR-750AC-F, 750W Power Supply Specifications, Specification Description