Cisco Systems manual Table A-3 Power Requirements for the Catalyst 3550-24PWR Switch

Appendix A Technical Specifications

Table A-2 Power Requirements for the Catalyst 3550-12T, 3550-12G, 3550-24, 3550-24-FX, and 3550-48 Switches

Power Requirements

AC input voltage	Catalyst 3550-12T and 3550-12G:
	100 to 127/200 to 240 VAC (autoranging)
	2 A/1 A, 50 to 60 Hz
	Catalyst 3550-24, 3550-24-FX, and 3550-48:
	100 to 127/200 to 240 VAC (autoranging)
	1.6 A/0.9 A, 50 to 60 Hz
DC input voltages for	Catalyst 3550-12T and 3550-12G: +12 V @13 A
RPS 300	Catalyst 3550-24:			+12 V		@8.5 A
	Catalyst 3550-24-FX:				+12 V		@8.5 A
	Catalyst 3550-48:			+12 V		@13 A
Power Requirements
DC input voltages for		+12 V	@25 A
RPS 675
Power consumption	Catalyst 3550-12T and 3550-12G: 190 W, 650 Btus per hour
	Catalyst 3550-24: 65 W, 222 Btus per hour
	Catalyst 3550-24-FX: 85 W, 290 Btus per hour
	Catalyst 3550-48: 110 W, 375 Btus per hour

Table A-3 Power Requirements for the Catalyst 3550-24PWR Switch

Power Requirements

AC input voltage	100 to 127 / 200 to 240 VAC (autoranging)
	5.5 A / 2.8 A, 50 to 60 Hz
DC input voltages for RPS 300			+12 V@7.5 A,				–48 V@7.8 A
DC input voltages for RPS 675			+12 V		@25 A,			–48 V@7.8 A
Power consumption	525 W, 1790 Btus per hour
Table A-4 Power Requirements for the Catalyst 3550-24-DC
Power Requirements
Power consumption		55 W, 190 Btus per hour
DC input voltage		–36 to –72 VDC
DC input voltages for RPS 675				+12 V		@13 A
Wire gauge for power connection		18 AWG (6 AWG for protective earth)
Branch circuit protection		5 A

Catalyst 3550 Multilayer Switch Hardware Installation Guide

A-2 OL-6155-01