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Catalyst 6500 Series Switches Installation Guide
OL-5781-04
Chapter 1 Product Overview
Catalyst 6503 Switch
Power Entry Module (PEM)
1
• A PEM is required for each installed power supply.
–
PEM-15A-AC (PEM for 950 W AC-input power supplies).
–
PEM-DC/3 (PEM for 950 W DC-input power supplies).
–
PEM-20A-AC+ (PEM for 1400 W AC-input power supplies).
Power Supplies
• Supports one or two power supplies. The following power supplies are
supported:
–
PWR-950-AC (950 W AC-input power supply).
–
PWR-950-DC (950 W DC-input power supply).
–
PWR-1400-AC (1400 W AC-input power supply).
• Installed power supplies can be of different wattage ratings. Installed
power supplies can be both AC-input, both DC-input, or one AC-input
and one DC-input. Power supplies can be configured in either redundant
or non-redundant mode.
Note For Catalyst 6503 and Catalyst 6503-E chassis that are equipped
with DC-input power supplies, the system (NEBS) ground serves as
the primary safety ground and must be installed. The DC-input
power supplies for these chassis do not have a separate ground.
• All Catalyst 6500 series AC-input power supplies require single-phase
source AC. Source AC can be out of phase between multiple power
supplies or multiple AC-power plugs on the same power supply because
all AC power supply inputs are isolated.
• Single power supplies are installed in the lower power supply bay. The
second power supply is installed in the upper power supply bay.
1. PEMs are required for Catalyst 6503 and Catalyst 6503-E switches only.
Table 1-1 Catalyst 6503 Switch Features (continued)
Feature Description
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