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APC BK350 Back-UPS 350 VA
APC BK350 Back-UPS 350 VA
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APC BK350 Back-UPS 350 VA

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BK350 Features

Key Features

Output power capacity
210Watts / 350VA
Output Connections
(3) NEMA 5-15R (Battery Backup)
(3) NEMA 5-15R (Surge Protection)
Nominal Output Voltage
Nominal Input Voltage
Input Connections
NEMA 5-15P
Cord Length
6ft (1.83meters)
APC Back-UPS 350
Battery Backup & Surge Protector for Electronics and Computers
Includes: CD with software, Cord management straps, USB cable, User Manual
  • Building Wiring Fault Indicator
    This LED informs users of potentially dangerous wiring problems in the wall circuit.
  • Cold-start capable
    Provides temporary battery power when the utility power is out.
  • Dataline surge protection
    Provides protection of connected equipment from power surges on the data lines.
  • Disconnected battery notification
    Warns when a battery is not available to provide backup power.
  • Hot-swappable batteries
    Ensures clean, uninterrupted power to protected equipment while batteries are being replaced
  • Lifetime data recovery warranty
    Provides peace of mind by providing professional data recovery services in the event data is lost due to the failure of the unit.
  • Serial connection
    Use your PC to access additional power protection and management features for your UPS via a serial port.
  • Simple battery replacement
    Increases UPS availability by allowing quick, easy battery replacement.
  • Transformer-block spaced outlets
    Protect equipment with input transformer blocks without blocking access to other receptacles.
  • USB connection
    Use your PC to access additional power protection and management features for your UPS via a USB Port.

Back-UPS Features & Benefits


Intelligent battery management
Maximizes battery performance, life, and reliability through intelligent, precision charging.
Automatic self-test
Periodic battery self-test ensures early detection of a battery that needs to be replaced.
Battery failure notification
Provides early-warning fault analysis on batteries enabling timely preventive maintenance


Safety-agency approved
Ensures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment.


Battery and surge protected outlets
Back up and protect your hardware and data during power outages, surges and spikes.
Surge only outlets
Protect secondary electronics from surges and spikes without reducing battery power used to run primary electronics during an outage.


LED status display
Quickly understand unit and power status with visual indicators.
Audible alarms
Provides notification of changing utility power and UPS power conditions

Marketing Features

Battery-protected and surge-only outlets
Reserves power capacity and run time for connected equipment that require UPS battery back-up while providing surge only protection for less critical equipment

Technical Specification


Max Configurable Power (Watts)
210Watts / 350VA
Output Frequency (sync to mains)
50/60Hz +/- 3 Hz
Waveform type
Stepped approximation to a sinewave
Maximum Output Current
Transfer Time
8ms typical : 12ms maximum


Input frequency
50/60 Hz +/- 3 Hz (auto sensing)
Input voltage range for main operations
98 - 140V
Number of Power Cords

Batteries & Runtime

Battery type
Maintenance-free sealed Lead-Acid battery with suspended electrolyte : leakproof
Typical recharge time
Replacement Battery
Expected Battery Life (years)
4 - 6
RBC Quantity
Battery Volt-Amp-Hour Capacity

Communications & Management

Interface Port(s)
Optional Simple Signalling RS232 cable, USB
Control panel
LED status display with On Line : On Battery : Replace Battery and Overload indicators
Audible Alarm
Alarm when on battery : distinctive low battery alarm : overload continuous tone alarm

Surge Protection and Filtering

Surge energy rating
Data Line Protection
Analog phone line for phone/fax/modem/DSL (RJ-11 connector)
Full time multi-pole noise filtering : 5% IEEE surge let-through : zero clamping response time : meets UL 1449


Maximum Height
6.5inches (165MM, 16.5CM)
Maximum Width
3.6inches (91MM, 9.1CM)
Maximum Depth
11.2inches (284MM, 28.4CM)
Net Weight
12.5lbs. (5.68KG)
Shipping weight
14.0lbs. (6.36KG)
Shipping Height
10.35inches (263MM, 26.3CM)
Shipping Width
6.89inches (175MM, 17.5CM)
Shipping Depth
14.06inches (357MM, 35.7CM)
Master Carton Units
Master Carton Weight
29.0lbs. (0.0)
Units per Pallet
SCC Codes
1073130401629 5


Operating Temperature
32 - 104 °F (0 - 40 °C)
Operating Relative Humidity
0 - 95 %
Operating Elevation
0-10000ft (0-3000meters)
Storage Temperature
-15 - 45 °C
Storage Relative Humidity
0 - 95 %
Storage Elevation
0-50000ft (0-15000meters)
Audible noise at 1 meter from surface of unit
Online thermal dissipation


California (CEC) Battery Charger, ENERGY STAR V2.0 (USA), FCC Part 68, TUV
Equipment protection policy
Lifetime : $100000
Standard warranty
3 years repair or replace