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Compact rectangular UPS unit in matte black with six NEMA outlets and USB port

APC

APC BK350 Back-UPS CS 350VA 210W 120V UPS

SKU CH-HBMF-HMC66 MPN BK350

Standby UPS delivers 350 VA and 210 W to six NEMA 5-15R outlets, three with battery backup, plus USB and RS-232 management ports

  • International Version120V
  • Input Voltage Range98 - 140V
  • Input Frequency50/60 Hz +/- 3 Hz (auto sensing)
  • VA Rating350VA
  • Watts210W
  • Output Voltage120V

VA 350 VA

  • 350VA / 210W protects desktop and router during outages
  • Six NEMA 5-15R outlets split between battery backup and surge-only
  • USB and RS-232 ports enable automatic shutdown via software
  • 120V standby topology with 98–140V input range handles brownouts
  • User-replaceable RBC2 battery restores full runtime in eight hours

Standby UPS for 120V Home Office

The APC BK350 Back-UPS CS provides 350VA and 210W of battery backup through a standby topology. It accepts an input range of 98-140V at 50/60Hz and delivers 120V output to six NEMA 5-15R outlets. Three outlets supply battery backup and surge protection while the remaining three provide surge protection only. A sealed lead-acid battery recharges in 8 hours and uses the RBC2 replacement cartridge.

Desktop Users Needing Basic Power Protection

This unit suits desktop PCs, networking gear and peripherals that require short-term runtime during outages and protection from voltage spikes. It includes USB and RS-232 management ports plus RJ-11 data line protection for phone, fax, modem or DSL connections. Management software is supplied on CD for automated shutdown configuration. It is not for equipment requiring pure sine-wave output, for loads above 210W, for environments outside 120V nominal, or for applications needing extended runtime or network management cards.

210W Continuous Power Limit

The single specification that decides fit is the 210W maximum output capacity. Add the power draw of every device you plan to connect to the battery-backup outlets; if the total exceeds 210W the UPS will overload and cannot support the load. The surge-only outlets do not increase this limit. Verify your equipment's wattage against this figure before purchase.

Highlights

  • 350VA / 210W protects desktop and router during outages
  • Six NEMA 5-15R outlets split between battery backup and surge-only
  • USB and RS-232 ports enable automatic shutdown via software
  • 120V standby topology with 98–140V input range handles brownouts
  • User-replaceable RBC2 battery restores full runtime in eight hours

Specifications

BrandAPC
SeriesBack-UPS
ModelBK350
International Version120V
Input Voltage Range98 - 140V
Input Frequency50/60 Hz +/- 3 Hz (auto sensing)
VA Rating350VA
Watts210W
Output Voltage120V
Output Frequency50/60Hz +/- 3 Hz
Outlets6
Outlet Type(3) NEMA 5-15R (Battery Backup)
(3) NEMA 5-15R (Surge Protection)
Battery TypeSealed Lead Acid
Battery Recharge Time8 hour(s)
Battery ReplaceableRBC2
AlarmsAlarm when on battery : distinctive low battery alarm : overload continuous tone alarm
Interface PortUSB
Management SoftwareYES
ApprovalsCalifornia (CEC) Battery Charger, ENERGY STAR (USA), FCC Part 68, TUV
Data Line ProtectionAnalog phone line for phone/fax/modem/DSL (RJ-11 connector)
Surge Energy Rating1020J
FeaturesAPC Back-UPS,210 Watts /350 VA,Input 120V /Output 120V, Interface Port USB
Dimensions6.50" x 11.20" x 3.60" (H x W x D)
Weight12.50 lbs.
Package ContentsBK350 UPS, CD with software, Cord management straps, USB cable, User Manual
Shipping weight5.60 kg
Package size358 × 236 × 178 mm

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Questions about this item

How do I confirm the BK350 is protecting my equipment after I plug it in?

The unit sounds a distinctive low-battery alarm when running on battery and a continuous tone if overloaded; the USB port and included software also report status to your computer.

What comes with the BK350 and what must I purchase separately?

The box includes the UPS, a USB cable, cord-management straps, a software CD and the user manual; the replaceable RBC2 battery is sold separately when the original reaches end of life.

Which BK350 capacity suits a typical desktop and monitor?

The 350 VA / 210 W rating supports a modest desktop and monitor; add the wattages of every device you plan to connect and ensure the total stays below 210 W.

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