Table Of Contents
Catalyst 4500-X AC-Input Power Supply Installation Note
Revised: October 15, 2012
This document covers installing and removing the AC-input power supply in the Catalyst 4500-X series switch chassis.
Note AC-input power supplies are not included as part of the basic chassis configuration product numbers. The AC-input power supplies are ordered separately.
This installation note contains the following sections
AC-Input Power Supply Features
There are two versions of the 750 W AC-input power supply, the C4KX-PWR-750AC-F power supply which has back-to-front airflow (the release lever is color-coded blue indicating cool side) and the C4KX-PWR-750AC-R power supply which has front-to-back airflow (the release lever is color-coded burgundy indicating warm side). Both power supplies provide 750 W of power. Figure 1 shows the AC-input power supply and identifies the major features.
Figure 1 750 W AC-Input Power Supply Features
The AC power supply has two LEDS mounted on the lower left corner of the power supply front panel. (See Figure 1.) Together, the two LEDs provide the status of the power supply. Table 1 lists the meanings of the LEDs.
Note Two LEDs labeled, PS1 and PS2, are located on the chassis front panel. The LEDs indicate the status of their respective power supplies: Green indicates OK and red indicates a fault (either voltage out of tolerance or fan failure) in the power supply.
Warning statements in the document use the following conventions:
Statement 1071—Warning Definition
No specific tools are required to install or remove the AC-input power supply.
Installing the Power Supply
To install the AC-input power supply, follow these steps:
Step 1 Remove the power supply from the shipping packaging and discard the packaging.
Step 2 Verify that the new power supply has the correct airflow direction (front-to-back or back-to-front) for your situation. The power supply release lever (see Figure 1), is color-coded blue for back-to-front airflow or burgundy for front-to-back airflow.
Note The chassis determines which airflow direction is correct by polling all of the fan assemblies and the power supplies. The airflow direction for all of the devices must be the same. If the airflow direction of the replacement power supply or the redundant power supply does not match the fan assemblies airflow direction, the system software shuts down the power supply and generates a power supply mismatch error message on the console.
Step 3 If the chassis power supply bay is empty, proceed to Step 4. If you are replacing a power supply already installed in the chassis power supply bay, go to the "Removing the Power Supply" section. If the chassis power supply bay is empty, but has a power supply blank cover installed, you must remove the blank cover (see Figure 2):
a. Grasp the two retaining clips with your thumb and forefinger and squeeze to release the blank cover from the power supply bay.
b. While still squeezing the two clips, pull on them to remove the blank cover from the power supply bay.
Figure 2 Power Supply Blank Cover
Note If the redundant power supply bay on the Catalyst 4500-X chassis is unused, you must cover it with a power supply blank cover (part no. C4KX-PWR-BLANK=) to maintain proper airflow through the chassis.
Step 4 Using two hands to support the new power supply, position it in front of the power supply bay and slide it into the bay.
Step 5 Firmly push on the power supply handle to fully seat the power supply in the bay. (See Figure 3.)
Note The retaining clip will pivot in and then snap into place when the power supply is fully installed in the bay. You can hear a click as the power supply release lever snaps into place.
Figure 3 Installing the AC-Input Power Supply
Step 6 Verify that you have the correct source AC power cord for your installation. See the "Power Cords" section for a list, including descriptions and illustrations, of the AC power cords supported on the power supply.
Step 7 Attach the AC power cord's appliance connector to the AC-in receptacle on the power supply and secure the power cord in place with the velcro retaining strap on the power supply. Connect the power cord's AC plug to the source AC outlet.
Note If the source AC outlet is live, the power supply will immediately power up. There is no power switch on the AC-input power supply.
Removing the Power Supply
To remove the AC-input power supply from the chassis, follow these steps:
Step 1 Release the AC power cord from the velcro restraint strap.
Step 2 Disconnect the AC power cord from the power supply.
Note The AC-input power supply does not have an on/off switch. Disconnecting the AC power cord immediately powers down the AC power supply.
Step 3 Grasp the power supply handle with your forefinger and place your thumb on the power supply release handle.
Step 4 Squeeze your forefinger and thumb together and pull on the power supply handle to release the power supply from the chassis bay. (See Figure 4.)
Figure 4 Removing the AC-Input Power Supply
Step 5 Slide the power supply out of the chassis bay.
Note The power supply is approximately 14 inches (35.56 cm) long. Place your other hand underneath of the power supply to support the power supply as you extract it from the chassis.
Step 6 Set the removed power supply aside.
Step 7 If you are not going to replace the power supply, place a power supply blank cover (part no. C4KX-PWR-BLANK=) over the empty power supply bay opening and snap it into place. If you are going to install a new power supply in the chassis, see the "Installing the Power Supply" section for instructions.
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
Autoranging input with power factor correction (PFC)
100 to 240 VAC (115/230 VAC nominal) single-phase
•11 A @ 100 VAC (max)
•6 A @ 200 VAC (max)
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
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
Table 3 lists the physical specifications of an AC-input power supply (C4KX-PWR-750AC-R= or C4KX-PWR-750AC-F=).
Table 3 Dimensions and Weight for an AC-Input Power Supply
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)
Shipping box dimensions, spare power supply
(H x W x D)
4.38 x 7.13 x 20.13 in
(11.13 x 18.11 x 51.13 cm)
3.7 lb (1.68 kg)
Table 4 lists and describes the power cords supported by the AC-input power supply. Illustrations of the power cords are included.
Table 4 AC Power Cords Supported on the 750 W Power Supply
Locale Part Number AC Source Plug Type Cordset Rating Power Cord Reference Illustration
10 A, 250 VAC
10 A, 250 VAC
10 A, 250 VAC
South Africa, India
10 A, 250 VAC
10 A, 250 VAC
16 A, 250 VAC
10 A, 250 VAC
13 A, 125 VAC
EL 212 (SI-32)
10 A, 250 VAC
12 A, 125 VAC
EL223 (NBR 14136)
10 A, 250 VAC
Figure 5 CAB-9K10A-SW=, CAB-C15-ACS= (AC Power Cord, Switzerland)
Figure 6 CAB-AS3112-C15-AU= (AC Power Cord, Australia)
Figure 7 CAB-BS1363-C15-UK= (AC Power Cord, United Kingdom)
Figure 8 CAB-BS546-C15-SA= (AC Power Cord, South Africa, India)
Figure 9 CAB-C2316-C15-IT= (AC Power Cord, Italy)
Figure 10 CAB-CEE77-C15-EU= (AC Power Cord, Europe)
Figure 11 CAB-IR2073-C15-AR= (AC Power Cord, Argentina)
Figure 12 CAB-US515-C15-US= (AC Power Cord, North America)
Figure 13 CAB-C15-ISR= (AC Power Cord, Israel)
Figure 14 CAB-C15-JPN= (AC Power Cord, Japan)
Figure 15 CAB-EL223-C15-BR= (AC Power Cord, Brazil)
Table 5 lists the documentation supporting the Catalyst 4500-X series switch that is available at http://www.cisco.com/
Table 5 Documentation Supporting the Catalyst 4500-X Series Switch
Title Description of Contents
Catalyst 4500-X Series Switch Installation Note
Contains instructions for rack-mounting the switch chassis.
Catalyst 4500-X 8-Port Network Uplink Module Installation Note
Contains instructions for installing and removing the optional 8-port network uplink module in the Catalyst 4500-X switch chassis.
Catalyst 4500-X DC-Input Power Supply Installation Note
Contains instructions for removing and installing the DC-input power supply in the Catalyst 4500-X switch chassis.
Catalyst 4500-X Fan Assembly Installation Note
Contains instructions for removing and installing a fan assembly in the Catalyst 4500-X switch chassis.
Regulatory Compliance and Safety Information for the Catalyst 4500-X Series Switch
Contains the regulatory compliance and safety information for the Catalyst 4500-X switch chassis. Also includes language translations of the warnings that appear in the other Catalyst 4500-X documentation.
Catalyst 4500 Series Switch Cisco IOS Software Configuration Guide, Release IOS XE 3.3.0SG(15.1(1)SG)
Contains instructions on how to configure the Catalyst 4500-X switch.
Catalyst 4500 Series Switch Cisco IOS Conmmand Reference, Release IOS XE 3.3.0SG(15.1(1)SG)
Contains descriptions of all of the software commands available that support the Catalyst 4500-X switch.
Release Notes for the Catalyst 4500 Series Switch, Release IOS XE 3.3.0SG(15.1(1)SG)
Contains the latest software caveats and workarounds related to the Catalyst 4500-X switch.
Obtaining Documentation and Submitting a Service Request
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This document is to be used in conjunction with the documents listed in the "Related Documentation" section.
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