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Catalyst 3550 Multilayer Switch Hardware Installation Guide
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Chapter 2 Installing and Starting the Switch
Connecting to DC Power
Caution
You must connect the Catalyst 3550-24-DC switch only to a DC-input power
source that has an input supply voltage from –36 to –72 VDC. If the supply
voltage is not in this range, the switch might not operate properly or might be
damaged.
Caution
The switch must be installed with 5A-branch-circuit protection.
Note
This installation must comply with all applicable codes.
To wire the switch to a DC-input power source, follow these steps:
Step 1
Locate and remove the terminal block plug (see
Figure 2-27 Terminal Block Plug
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