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Tripp Lite INTERNET550SER Internet Office 550VA UPS Compact 8 Outlet

Calculated at Checkout
$114.36 $64.94
(You save $49.42 )

Image may not exactly match the product.

$114.36 $64.94
(You save $49.42 )
In Stock. Ships Same Day If Ordered Before 3pm PT

Warranty Information
3 Years

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550VA UPS Compact Low Profile Standby 8 outlet w/ DB9 Port



Key Features

  • INTERNET550SER standby UPS offers protection from blackouts, brownouts and surges on both AC and dialup modem lines
  • Provides seamless battery derived AC output during blackouts and severe brownouts so that connected equipment can be shut down without data loss
  • Built-in serial port interface provides simple communications for automatic system shutdown if power fails while the system runs unattended
  • PowerAlert software available via free download from, serial cable included
  • Supports Tripp Lite's Watchdog system service to restore operation to locked equipment through soft reboot of application/OS or hard power off/on reboot of connected equipment; ideal for unattended kiosk applications
  • 4 battery supported outlets protect computer, monitor and one vital system peripheral, plus 4 additional surge suppression-only outlets for printers and other system accessories not requiring battery support
  • Attractive stealth black UPS color scheme
  • Built-in single line phone jacks protects peripherals with a standard dialup phone line connection
  • Built-in audible alarm and front panel LEDs offer continuous status information regarding line and battery power operation
  • 550VA /300 watt power handling ability supports entry-level PC systems for several minutes during power fail conditions
  • Ultra-compact housing fits anywhere, wall mountable
  • Includes attached 6 ft. AC power cord with space saving right angle plug, on/off power switch
  • Compatible with 120V/60 Hz applications in USA, Canada, Mexico and other countries
  • $100,000 connected equipment insurance (USA, Puerto Rico, & Canada only)

Package Includes

  • INTERNET550SER UPS system
  • DB9 serial cable
  • Instruction manual
Output Volt Amp Capacity (VA) 550
Output Watt Capacity (watts) 300
Nominal Output Voltage(s) Supported 115V; 120V
Frequency compatibility 60 Hz
Output voltage regulation (Battery mode) 115V (+/- 5%)
Built-in UPS output receptacles 8 5-15R outlet(s)
Surge suppression only outlets 4 UPS outlets, 4 surge-only outlets
Output AC waveform (AC mode) Sine wave
Output AC waveform (battery mode) PWM sine wave
Rated input current (at maximum load) 10A
Nominal Input Voltage(s) Supported 120V AC
UPS input connection type 5-15P
Input circuit breaker 10A
UPS Input cord length (ft.) 6
UPS Input cord length (m) 1.8
Recommended Electrical Service 15A 120V
Phase Single-Phase
Full load runtime (minutes) 3 min. (300w)
Half load runtime (minutes) 11.5 min. (150w)
DC system voltage (VDC) 12
LED Indicators 2 LEDs indicate power status
and overload/check battery status
Alarms Audible alarm indicates power-failure and overload status
Switches Combination switch controls on/off
power status and self-test operation
UPS AC suppression joule rating 420
UPS AC suppression response time Instantaneous
UPS Dataline suppression 1 line TEL/DSL (1 in / 1 out)
EMI / RFI AC noise suppression Yes
Installation form factors supported
with included accessories
Tower; Ultra-compact desktop
Primary form factor Desktop
UPS / Power Module dimensions
in primary form factor
(height x width x depth / inches)
3.1 x 10.9 x 5.7
UPS / Power Module dimensions
in primary form factor
(height x width x depth / cm)
7.9 x 27.7 x 14.5
UPS / Power Module weight (lbs) 6.5
UPS / Power Module weight (kg) 3
UPS Shipping dimensions
(height x width x depth / inches)
4.1 x 8 x 13
UPS Shipping dimensions
(height x width x depth / cm)
10.4 x 20.3 x 33
Shipping weight (lbs) 7
Shipping weight (kg) 3.2
UPS housing material ABS
Operating Temperature Range +32 to +104 degrees Fahrenheit / 0 to +40 degrees Celsius
Storage Temperature Range +5 to +122 degrees Fahrenheit / -15 to +50 degrees Celsius
Relative Humidity 0 to 95%, non-condensing
AC mode BTU / hr. (full load) 10.3
Battery mode BTU / hr. (full load) 194.3
AC mode efficiency rating (100% load) 99%
Communications interface DB9 Serial
PowerAlert software Free download from
Communications cable DB9 interface cable included
WatchDog compatibility Supports Watchdog application, OS and
hard-reboot restart options for remote applications
Transfer time 2-4 milliseconds
Low voltage transfer to battery power (setpoint) 9900%
High voltage transfer to battery power (setpoint) 139
Cold Start (startup in battery
mode during a power failure)
Cold-start operation supported
Green & high efficiency features Greater than 95% efficiency - GREEN UPS
UPS Certifications Tested to UL1778 (USA); Tested to CSA (Canada);
Tested to NOM (Mexico); Meets FCC Part 15
Category B (EMI); ENERGY STAR Qualified
Product Warranty Period (U.S. & Canada) 3-year limited warranty
Product Warranty Period (Latin America) 3-year limited warranty
Product Warranty Period (International) 2-year limited warranty
Product Warranty Period (Mexico) 3-year limited warranty
Connected Equipment Insurance
(U.S., Canada & Puerto Rico)
$100,000 Ultimate Lifetime Insurance

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