Power Requirements - Cisco Catalyst 9404R Switch Hardware Installation Manual

Preparing for Installation
• When installing a component, use any available ejector levers or captive installation screws to properly
• When removing a component, use any available ejector levers or captive installation screws to release
• Handle carriers by available handles or edges only; avoid touching the printed circuit boards or connectors.
• Place a removed component board-side-up on an antistatic surface or in a static shielding container. If
• Avoid contact between the printed circuit boards and clothing. The wrist strap only protects components
• Never attempt to remove the printed circuit board from the metal carrier.

Power Requirements

Power supplies installed on the switch chassis must be AC input only. When preparing your site for switch
installation, adhere to these requirements:
• In systems configured with more than one power supply, connect each of the power supplies to a separate
• To prevent loss of input power, be sure that the total maximum load on each source circuit is within the
• In some systems, you may decide to use an uninterrupted power supply (UPS) to protect against power
• The AC-input power supply has a detachable power cord.
• Each chassis power supply should have a separate, dedicated branch circuit.
• If you are using a 208 or 230 VAC power source in North America, the circuit must be protected by a
• The source AC outlet must be within 9.84 to 14 feet (3.0 to 4.293 meters) of the system, depending on
seat the bus connectors in the backplane or midplane. These devices prevent accidental removal, provide
proper grounding for the system, and help to ensure that bus connectors are properly seated.
the bus connectors from the backplane or midplane.
you plan to return the component to the factory, immediately place it in a static shielding container.
from ESD voltages on the body; ESD voltages on clothing can still cause damage.
input power source. If you fail to do this, your system might be susceptible to total power failure due to
a fault in the external wiring or a tripped circuit breaker
current ratings of the wiring and breakers.
failures at your site. Be aware when selecting a UPS that some UPS models that use ferroresonant
technology may become unstable when operating with the switch power supplies that use power factor
correction. This may cause the output voltage waveform to the switch to become distorted, resulting in
an undervoltage situation in the system.
• North America
• C9400-PWR-3200AC only—Power supplies require a 20 A circuit.
• C9400-PWR-2100AC only—Power supplies require a 15 A circuit.
• International—Circuits should be sized according to local and national codes.
two-pole circuit breaker.
the length of the power cord, and should be easily accessible.
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
Power Requirements
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