power inverter 4000w cisco power supply PWR-4000-DC=

DC-input voltage

•-48 VDC @ 37 A for nominal -48 V battery backup system (operating range: -40.5 VDC to -56 VDC)

•-60 VDC @ 29 A for nominal -60 V battery backup system (operating range: -55 VDC to -72 VDC)

Note The 4000 W DC-input power supply requires two source DC-inputs to be connected; it cannot operate with only one positive (+)/negative (-) source DC terminal pair installed.

DC-input current

40 A per each DC input (three inputs)

Note For multiple DC input power supplies, each DC input must be protected by a dedicated circuit breaker or a fuse. The circuit breaker or the fuse must be sized according to the power supply input power rating and any local or national electrical code requirements.

Power supply output capacity

•4000 W with three inputs active

•2700 W with two inputs active

Note The 4000 W power supply cannot operate with only one source DC-input connected.

Power supply output

•15 A @ + 3.3 VDC

•5 A @ + 5 VDC

•12 A @ +12 VDC

•90.63 A (three inputs) or 59.68 A (two inputs) 
@ +42 VDC

Note The 4000 W power supply cannot operate with only one source DC-input connected.

DC input terminal block

Accepts 4 AWG copper conductors. Actual size of the wire needed is determined by the installer or local electrician.

Output holdup time

8 ms

kVA rating¹

5.4  kVA maximum

Heat dissipation

17,730 BTU/hour (approx.)

Weight

30.8 lb (14.0 kg)

 The kVA rating listed for the power supply should be used as the sizing criteria for both UPS outputs as well as standard circuits and transformers to power a switch.