a catalyst 4500 series switch can use a 1000 w, 1300 w, 1400 w, 2800 w (see figure 1-17), or 4200 w (with two inputs, see figure 1-18) ac-input power supply , a 1400 w dc-input power supply with integrated pem (see figure 1-19),or a 1400 w dc multiple-input power supply (see figure 1-20).
the ac-input power supply has a power cord that connects each power supply to the site power source. the dc-input power supply is equipped with a input terminal block that is directly connected to the site power wiring.
each power supply has an on/off switch that supplies power to the switch. for information on removing and replacing power supplies, see the “removing and replacing the power supply” section.
the 4200 w ac power supply should not be used in mixed-voltage configurations. all the inputs in a chassis must be the same voltage (110 or 220 v).
the 1400 w dc triple-input power supply is not compatible with other power supplies used on these products, and can only be used with similar supplies. in redundant mode, the two power supplies must have identical inputs.
the 1400 w dc input power supply (either single or triple-input) may be used with the catalyst 4500 series ac power shelf. documentation for the catalyst 4500 series ac power shelf is at http://www.cisco.com/univercd/cc/td/doc product/lan/cat4000/inst_nts/78_15068.htm
catalyst 4500 series switches support one power supply and an optional redundant power supply. each ac power supply has an individual power cord and status leds. systems with redundant power supplies will share the load, with each unit providing approximately one-half of the total load. for information about configuring your switch for redundant and combined modes, refer to the software configuration guide for your switch.
the catalyst 4510r requires at least 1400 w of input power. (the 1000 w ac and 1300 w ac power supplies for the catalyst 4500 series will fit and function in a catalyst 4510r; however, power management may be required in high density configurations.) cisco recommends the use of the 1400 w dc, 1400 w ac, and 2800 w ac power supplies for the catalyst 4510r.
when power is removed from one power supply on a catalyst 4500 series switch that has two power supplies, the redundant power feature causes the second power supply to produce full power.
to replace a power supply, see the “removing and replacing the power supply”.