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Surge Suppressors > 
Tripp Lite > 
Item#: 9SIA2F811H7431

Tripp Lite ISOBAR825ULTRA 8 Outlets 3840 Joules 25' Cord Isobar Premium Surge Suppressor

  • 25 Feet
  • 8 Outlets
  • 3840 joules
  • 1440 Watts
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With more than 18 million satisfied customers worldwide, Tripp Lite's Isobar® is the world's number-one selling premium surge protector. Tripp Lite's exclusive Isobar surge suppression technology, combined with a nearly indestructible metal case, stops even the strongest surges before they can damage or destroy sensitive equipment. The ISOBAR825ULTRA features unique isolated filter banks that block disruptive EMI/RFI line noise interference and prevent mutual interference between connected components, plus an extra-long 25-ft. cord. These premium features make the ISOBAR825ULTRA ideal for a wide range of applications: factories, warehouses, retail outlets and home offices.

ISOBAR825ULTRA Applications

Ultimate Protection for All Electronics

The ISOBAR825ULTRA offers powerful surge protection for all electronics. It provides eight AC outlets arranged in four isolated filter banks. Outlets are widely spaced to accommodate up to four large transformers without blocking remaining outlets. A set of four plug-in covers is included to safeguard unused outlets. Diagnostic LEDs confirm power availability, line fault and surge protection status at a glance. An extra-long 25-ft. cord enables connection to a distant wall outlet and a space-saving right-angle plug allows furniture to be placed flush against the wall. Four keyhole slots on the back of the unit enable the ISOBAR825ULTRA to be wall-mounted.

Isolated Filter Banks
ISOBAR825ULTRA Feature Focus

Powerful Surge Protection and Performance Enhancement

More joules mean more protection! The ISOBAR825ULTRA's 3840-joule surge suppression rating, Isobar surge protection technology and rugged all-metal housing shield connected equipment from even the strongest surges. EMI/RFI line noise filtering helps components perform at their peak. Line noise filtering eliminates performance problems that can be caused by radio transmissions, fluorescent lighting and appliances, while promoting longer component life spans.

Exclusive Isolated Filter Banks

Devices connected to the same surge suppressor can interfere with one another's performance, for instance when office equipment or household appliances (printers, copiers, blenders, vacuums, fans) degrade TV picture and sound quality. The Isobar is the only surge protector with internal barriers (called isolated filter banks) that prevent disruptive line noise from causing A/V distortion, computer lock-ups, data errors and similar problems. Isolated filter banks ensure that peripheral devices and appliances don't degrade the performance of computers and sensitive A/V components.

Built-In Diagnostic Capability

The ISOBAR825ULTRA features 3 diagnostic LEDs (LINE OK, GROUND OK & SURGE OK) that show power and protection status at a glance. An illuminated master switch provides one-touch power control over all connected components.

Versatile Installation Options

The ISOBAR825ULTRA features an extra-long 25-ft. cord to reach distant outlets. A space-saving right-angle plug allows office furniture, cabinets, etc. to be placed flush against the wall. The ISOBAR825ULTRA's rugged all-metal case stands up to harsh environments such as warehouses, garages and factory floors. The case is equipped with keyhole mounting tabs to facilitate permanent installation on or under counters and worktables, on walls, etc. Included outlet covers (set of four) may be used to safeguard unused outlets.

Ultimate Peace of Mind

The ISOBAR825ULTRA comes with $50,000 Ultimate Lifetime Insurance coverage for connected equipment—guaranteed lifetime protection against damage due to surges, including direct lightning strikes. Ultimate Lifetime Insurance coverage begins the moment you purchase your Tripp Lite surge protector—no forms to fill out or send in! Additionally, all Tripp Lite surge protectors are backed by a lifetime product warranty and a rapid-response, no-questions-asked replacement policy.

Technical Specifications

  • Voltage compatibility: 120 VAC
  • Frequency compatibility: 50/60 Hz
  • Output volt amp capacity (amps): 12
  • AC suppression rating (joules): 3840
  • Outlet quantity/type: 8 x 5-15R (includes 4 outlet safety covers)
  • Input cord: 25 ft.
  • Input plug: 5-15P right-angle
  • Switches/LEDs: Lighted On/Off power switch, Circuit breaker reset button, 3 diagnostic LEDs
  • Dimensions (HxWxD): 2.5" x 9" x 3.5"
  • Weight: 3.3 lbs
  • Material of construction: Metal
  • Agency approvals: UL 1449, UL 1363 & UL 1283; FCC Part 68
What’s in the Box

What's in the Box

  • • ISOBAR825ULTRA Surge Protector
  • • Set of 4 outlet safety covers
Tripp Lite
ISOBAR Surge Protectors
Outlets 4 6 8 8
Joules 3330 3330 3840 3840
Metal Housing Yes Yes Yes Yes
Cord Length 6 ft. 6 ft. 12 ft. 25 ft.
Ultimate Lifetime Insurance $50,000 $50,000 $50,000 $50,000
Warranty Lifetime Lifetime Lifetime Lifetime

Learn more about the Tripp Lite ISOBAR825ULTRA




Outlets Type
NEMA 5-15R
Cord Length
25 Feet
Output Amperage Capacity
Output Watt Capacity
1440 Watts
AC Suppression Joule Rating
3840 joules
EMI/RFI Noise Filter
40-80 dB
Clamping Voltage
140 Volts - RMS
Protection Modes
Includes full normal mode (H-N) and common mode (N-G / H-G) line surge suppression
Unit Dimensions
2.5" x 9" x 3.5"
Tripp Lite's ISOBAR is the world's #1 selling premium suppressor series with more than 16 million satisfied customers and a safety-tested history of 20+ years
Robust surge suppression with sine-wave tracking protects against the heaviest of surge conditions, exceeding IEEE category A&B specifications and reducing 6,000V test surges to harmless levels less than 35 volts
Multi-component suppression circuits combine torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and multiple layers of metal oxide varistors into exclusive isolated filter banks that remove EMI/RFI interference, even noise from other pieces of connected equipment
8 outlets arranged in four filter banks prevent system crashes, reboots and performance problems common as noisy peripherals are powered off and on
Network grade surge suppression rated at 3840 joules/97,000 amps
Widely spaced outlets accommodate up to 4 large transformer plugs without blocking outlets
3 LED indicators confirm suppressor operation and site wiring status, plus warning of suppressor or electrical fault conditions
Lighted power switch confirms power on/off status
25 foot AC line cord with space-saving angled input plug
Keyhole mounting tabs allow permanent installation
Set of 4 outlet covers safely seal off unused outlets
120V AC, 50/60Hz electrical compatibility

Manufacturer Warranty

Lifetime limited
Lifetime limited

Quick Info


  • Limited Warranty period (parts): Lifetime
  • Limited Warranty period (labor): 0 day

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Home > 
Computer Hardware > 
Power Protection > 
Surge Suppressors > 
Tripp Lite > 
Item#: 9SIA2F811H7431
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