Cisco PWR-C49E-300AC-F/2 Power supply - hot-plug / redundant ( plug-in module ) - AC 100-240 V - 300 Watt - PFC - for Catalyst 4948E-F
The PWR-C49E-300AC-F 300 W AC-input power supply can be installed only in the Catalyst 4948E-F switch chassis. This power supply is not supported on the Catalyst 4948E switch.
•Autoranging input with power factor correction (PFC).
•Power factor correction is a standard feature. PFC reduces the reactive component in the source AC current allowing higher power factors and lower harmonic current components.
•Low-line (120 VAC nominal)—85 VAC (min) to 132 VAC (max)
•High-line (230 VAC nominal)—170 VAC (min) to 264 VAC (max)
•4 A @ 100 VAC (maximum)
•2 A @ 240 VAC (maximum)
AC-input frequency: 47 to 63 Hz
Branch circuit requirements
Each chassis power supply should have its own dedicated, fused-branch circuit:
•For North America—15 A
•For International—Circuits sized to local and national codes
•All AC power supply inputs are fully isolated.
–Source AC can be out of phase between multiple power supplies in the same chassis, which means that PS1 can be operating from phase A and PS2 can be operating from phase B.
–For high-line operation, the power supply operates with the line conductor wired to a source AC phase and the neutral conductor wired either to neutral or to another source AC phase as long as the net input voltage is in the range of 170 to 264 VAC.
Power supply output: 25 A @+12 VDC
Output holdup time: 20 ms minimum
kVA rating: 0.4 kVA
Power supply fan
•One temperature-controlled, variable-speed fan
•Airflow direction—Front to back
•The power supply fan has four speed settings. The speed settings are dependent on the air temperature detected by the inlet air temperature sensor mounted in the chassis. See Table A-4 for inlet temperature ranges and corresponding fan speeds.
Weight: 2 lb (0.9 kg)