Cisco Systems 3750-X Fan Module Specifications, Physical Specification, Operating Specification

Appendix A Technical Specifications

Fan Module Specifications

Table A-4	Power Specifications for DC-Power 24- and 48-Port Switches
Power Specifications
Maximum output power		C3KX-PWR-440WDC: 440 W
Input current		C3KX-PWR-440WDC: 16	– 8 A
DC input voltage		C3KX-PWR-440WDC: –36 to –72 VDC
Output ratings		C3KX-PWR-440WDC: –56 V@7.86 A
Voltage range domestic		C3KX-PWR-440WDC: –36 VDC (minimum)
		–48 VDC (nominal), –72 VDC (maximum)
Voltage range international		C3KX-PWR-440WDC: –36 VDC (minimum)
		–60 VDC (nominal), –72 VDC (maximum)
Total input BTU1		C3KX-PWR-440WDC: 1841		Btus per hour, 540 W
Total output BTU1		C3KX-PWR-440WDC: 1502		Btus per hour, 440 W
Wire gauge for ground connection		C3KX-PWR-440WDC: 12	AWG or 8 AWG
Branch circuit protection		C3KX-PWR-440WDC: 20	A

1.The total input and total output BTU ratings refer to input power to the power supply and output power to the switch. The BTU ratings are based on –36 VDC.

Fan Module Specifications

Table A-5	Fan Module Environmental and Physical Specifications
Environmental Ranges
Operating temperature		23 to 113° F (–5 to 45° C)
Storage temperature		–40 to 158° F (–40 to 70° C)
Relative humidity		10 to 95% (noncondensing)
Altitude		Up to 10,000 ft (3049 m)
Physical Specification
Dimensions (H x D x W)		1.68 x 6.8 x 5.74 in. (4.27 x 17.27 x 14.58 cm)
Weight		0.24 lb. (0.1 kg)
Operating Specification
Airflow		60 cfm

Catalyst 3750-X and 3560-X Switch Hardware Installation Guide

A-4 OL-19593-01