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Tripp Lite > 
Item#: N82E16812120523

Tripp Lite ISOBAR8ULTRA 8 Outlets 3840 Joules 12' Cord Isobar Premium Surge Suppressor

  • 12 ft.
  • 8 Outlets
  • 3840 joules
  • 120V
  • 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 ISOBAR8ULTRA also features unique isolated filter banks that block disruptive EMI/RFI line noise interference and prevent mutual interference between connected components. These premium features make the ISOBAR8ULTRA ideal for a wide range of applications, from data centers to desktop computer systems.

The ISOBAR8ULTRA provides eight AC outlets arranged in four isolated filter banks (two per bank). Outlets are widely spaced to accommodate up to four large transformers without blocking remaining outlets. Diagnostic LEDs confirm power availability, line fault and surge protection status at a glance. The ISOBAR8ULTRA features a 12-ft. foot power cord with space-saving right-angle plug, keyhole mounting tabs and a set of four covers to safeguard unused outlets. The ISOBAR8ULTRA comes with $50,000 Ultimate Lifetime connected equipment insurance (USA/Canada only) and a lifetime manufacturer's product warranty.

ISOBAR8ULTRA Applications
Isolated Filter Banks
ISOBAR8ULTRA Feature Focus

Powerful Surge Protection and Performance Enhancement

More joules mean more protection. The ISOBAR8ULTRA'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 protector can interfere with one another's performance—for instance when household appliances (blenders, refrigerators, fans) degrades 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 LEDs

Three diagnostic LEDs (LINE OK, GROUND OK & SURGE OK) show power and protection status at a glance.

Versatile Installation Options

The ISOBAR8ULTRA features a 12-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 ISOBAR8ULTRA'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 ISOBAR8ULTRA comes with $50,000 Ultimate Lifetime Insurance coverage for connected equipment—guaranteed lifetime protection against damage due to surges, including direct lightning strikes (USA/Canada only). 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
  • Overload protection: 12-amp circuit breaker
  • AC suppression rating (joules): 3840
  • Outlet quantity/type: 8 x 5-15R (includes 4 outlet safety covers)
  • Input cord: 12'
  • 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: UL1449/1283/1363, cUL, Exceeds IEEE 587 category A&B specifications, RoHS
What’s in the Box

What's in the Box

  • • ISOBAR8ULTRA premium surge protector
  • • Set of 4 outlet safety covers
  • • Instruction manual with warranty information
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 ISOBAR8ULTRA




Outlets Type
NEMA 5-15R
Cord Length
Input Voltage
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
Full normal mode (H-N) and common mode (N-G / H-G) line surge suppression
Unit Weight
3.3 lbs.
Unit Dimensions
2.50" x 9.00" x 3.50" (H x W x D)
Tripp Lite's ISOBAR is the world's #1 selling premium protector series with more than 18 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 toroidal 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 surge protector operation and site wiring status, plus warning of protector or electrical fault conditions

Lighted power switch with integrated 12 amp circuit breaker offers power control and overload protection

12 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
Light Gray


Package Contents
ISOBAR8ULTRA Surge Protector
Set of 4 outlet safety covers
Instruction manual with warranty information

Manufacturer Warranty

Lifetime limited
Lifetime limited

Quick Info


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

Customer Reviews of the Tripp Lite ISOBAR8ULTRA

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  • Scott G.
  • 10/15/2013 5:58:49 PM
  • Tech Level: High
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggsNecessary Goodness

Pros: Solid Construction
Movable long main plug (with right angle)
Status Lights that mean something!

Cons: Plugs face same direction on both sides of the strip. So if you do not use pigtail adapters for ac/dc converters then you can lose space (but if you are serious about anything you should have pigtails!)
The solid construction takes up a lot of space! I mounted it on the back of my desk to ensure that no moving cables etc had the possibility of switching the strip off.

Other Thoughts: After seeing a couple articles on surge protectors, and my APC UPS finally failing and relying on a cheap belkin surge protector from Target.
I decided that this device will last a lifetime and has lots of perks that I like.
Having a noise filter as well as a high joule rating means you should not have to worry about your components.

Did you find this review helpful? Yes No

  • Timothy C.
  • 4/27/2013 10:36:45 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month

5 out of 5 eggsImpressed

Pros: Great suppression specs, excellent RF filtering.

Cons: The cable is very long, and there is not shorter option. Although if I wasn't so lazy, I would just shorten it myself.

Other Thoughts: I bought this for the impressive-looking surge suppression specifications. I didn't pay much mind to the power filtering advertised - most consumer grade power filters I have run into are useless. After I plugged my rig into this, the output from my desktop to stereo unit is SILENT (had major hiss at maximum volume previously). Wasn't expecting this.

1 out of 1 people found this review helpful. Did you? Yes No

  • Raymond H.
  • 4/5/2013 5:42:20 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsGood product

Pros: It works.
Lifetime warranty.

Cons: The flip switch does feel flimsy as other reviewers noted.

Other Thoughts: After several hours of research, I determined that this unit was the sweet spot of the market for me. I use the two for high-priced sound and video equipment and for my computers. I believe that installing this unit improved the sound quality of my top-of-the-class HK 7550HK receiver.

0 out of 1 people found this review helpful. Did you? Yes No

  • David P.
  • 2/8/2012 8:56:17 PM
  • Tech Level: Average
  • Ownership: more than 1 year

4 out of 5 eggsGood if you leave it on

Pros: Protects the equipment.

Cons: Have been in the habit of turning off this unit's power switch after turning off the computer. After while the switch seems to have gone bad -- buzzing noise when it is on, plus actually a small whiff of smoke tonight (writing this on an older emergency spare model).

Other Thoughts: Have had several of these at work, plus one at home for years. The work ones are on all the time and are fine.

Manufacturer Response:

Thank you for your review. We are sorry to hear you are having issues with the power switch on the ISOBAR8ULTRA. This unit comes with a lifetime warranty and $50,000 connected equipment insurance. Please contact our Chicago based Tech Support team at 773-869-1234 and they will be happy to help you troubleshoot the issue or provide a replacement unit if needed. Thank you.

Did you find this review helpful? Yes No

  • Iyke M.
  • 11/15/2011 4:15:40 PM
  • Tech Level: Average
  • Ownership: less than 1 day
  • Verified Owner

5 out of 5 eggs

Pros: Sturdy Product, looks like it could live through a nuclear holocaust. Came with cover plugs to seal up the plugs your not using. Upon playing music I noticed a diffrence in the sound quality, I could not hear the normal interferance I used to get playing songs.

Cons: n/a

Did you find this review helpful? Yes No

  • Terry S.
  • 3/7/2011 10:08:47 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Product!

Pros: These are great surge protectors. We've been using these for more than 20 years. The enclosure is metal and is industrial-like. I use them for all of my electronics, heck my college uses these for all of their computers (300+ computers). They help protect your expensive electronics, I've never had anything damaged when hooked up to one of these. The cable is nice and long, 12' allows you to hook this up virtually anywhere without having to use an extension cable. If you really need extra cable they sell a 25' version of this product. It also has a right angle plug which is helpful because it saves space. If you work in an industrial environment these are good to use to protect equipment or other sensitive devices. These work very well with Home Theater equipment as well.

Cons: None

Other Thoughts: I've probably had maybe 1 stop working effectively, and this is after 20+ years of use on the same unit. I wouldn't trust any other company with surge protection. These last forever, so go buy one and you'll see why these are so good.

Did you find this review helpful? Yes No

  • James N.
  • 7/10/2009 10:54:32 AM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsMy entertainment center never sounded so good.

Pros: Quality of manufacture, filtering and long power cord separate filters for each outlet pair.

I read on an audiophile site that this would help eliminate the ham radio idiot that comes through my speakers. I had already done the grounds and upgraded to all shielded cables - no change. This unit wiped him out and believe it or not my sound quality is better across the board. This thing rocks and now my sound system does.

We tried it on a friends system. He is using a very large Monster active power filter on (over $500). We decided he wasted a lot of money. He bought a Tripp unit for the system he is adding to his office.

Cons: Long power cord. Yep, it's good if you need it and a problem if you only need to go 3 feet. I cut mine and put on a hospital grade 90 deg plug.

Very Industrial style enclosure - you are going to want to put it out of site

2 out of 7 people found this review helpful. Did you? Yes No

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Item#: N82E16812120523
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