Cisco Catalyst 3750 Hardware Installation Manual page 130

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Connecting to DC Power

Wiring the DC-Input Power Source

Before performing any of the following procedures, ensure that power is removed from the DC circuit.

Warning

Statement 1003

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

You must connect the Catalyst 3750G-12S-SD switch only to a DC-input power source that has an input

Caution

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.

The switch must be installed with 5 A-branch-circuit protection.

Caution

This installation must comply with all applicable codes.

Note

To wire the switch to a DC-input power source, follow these steps:

Step 1

Apply tape to the circuit-breaker switch handle, and move the circuit-breaker handle to the off position.

Locate and remove the terminal block plug (see

Step 2

Figure C-4

Catalyst 3750 Switch Hardware Installation Guide

C-4

Terminal Block Plug

Appendix C

Figure

C-4).

Connecting to DC Power

OL-6336-05

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