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Cisco Catalyst 4900M Switch In stallation Guide
78-18350-02
Appendix A Specifications
Catalyst 4900M Switch Power Supply Specifications
Inrush value Cold turn on (PSU on for < 1 hour) 50 A for one cycle of
AC
Output vo ltage 12 VDC
Input KVA rating 1.200 KVA
DC-input p ower supply
Power supply output 960 W
Power supply dissipation 320 W
DC-input 27 A @ –48 VDC (Operating range –40.5 to –56 VDC)
21.6 A @ –60 VDC (Operating range –55 to –72 VDC)
Output current 80 A maximum
Inrush value Hot turn on (PSU on for > 1 hour) 75 A
Output vo ltage 12 VDC
Input KVA rating 1.296 K VA
Table A-3 Catalyst 4900 Series Power Supply Specifications (continued)
Item Specification