Cisco Systems manual Cisco ME 3400-24TS Switches, Cisco ME 3400G-12CS Switches

Appendix C Connecting to DC Power

Wiring the DC-Input Power Source

If you want to receive an alert if an external power supply fails, do not connect feeds to one terminal block and from there connect feeds to the second terminal block. (See the example in Figure C-7.) This configuration provides redundant power, and the switch continues to operate if one of the external power supplies fails. However, the software does not send a message to you that an internal power supply has failed.

Figure C-7 Connecting Feeds from One Terminal Block to the Second Terminal Block

							SYSTEM
	B			+			PS 1
-36					+		PS 2
		–	-72 V	A
CURRENT					B
		2 – 1A		INPUT -36
					–	-72 V
				CURRENT
					2 – 1A		CONSOLE	191867

Cisco ME 3400-24TS Switches

This warning only applies to Cisco ME 3400-24TS switches:

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:

5 A Statement 1005

Cisco ME 3400G-12CS Switches

This warning only applies to Cisco ME 3400G-12CS switches:

Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the protective device is rated not greater than:

6 A Statement 1005

All Cisco ME 3400 Switches

These warnings apply to all Cisco ME switches:

Warning A readily accessible two-poled disconnect device must be incorporated in the fixed wiring. Statement 1022

Cisco ME 3400 Ethernet Access Switch Hardware Installation Guide

OL-7677-04 C-7