Leviton 51120-1 Panel Mount Whole Home Surge Protector and Supressor
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Leviton 51120-1 Panel Mount Whole Home Surge Protector and Supressor

Protect All of Your Home Electronics with a Single Device
  • For use at the service entrance, utility meter, or other branch panel locations
  • Unlimited main breaker panel current
  • Transient surge capacity - 950 joules, Maximum surge current - 50,000A
  • Response time - Instantaneous
  • Can be surfaced-mounted or flush-mounted in-wall in a 6"x 6"x 4" cutout

Item #: 4860

Expected in stock 10-01-2014

Special Price: $180.95

List Price: $199.95

Your Savings: $19.00

Frequently Bought Together:

Leviton 51120-1 Panel Mount Whole Home Surge Protector and Supressor

Special Price: $180.95

List Price: $199.95

Your Savings: $19.00

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  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • Provide your home with protection from high-energy transient voltage surges that can damage sensitive electronics such as computers, audio and video gear and other electronic appliances. The Leviton 51120-1 Whole Home Surge Protector and Suppressor can be used individually or as part of a coordinated application strategy, to protect sensitive electronic equipment, in industrial, commercial and residential locations. This device will divert damaging voltage transients, or surges, away from electronic equipment offering protection against catastrophic failure, costly downtime and data disruptions.


    The Leviton Branch Panel Mounted Transient Voltage Surge Suppressor (TVSS) devices are designed to protect residential as well as small commercial establishments from high voltage transients. Standardized J-Box metal enclosure with pre-punched standard size knockouts simplifies flush mounting in typical frame construction environments, and provides convenient connection means to existing branch panels. Some of the features are:

    Additional Features
    • Tested to ANSI/IEEE C62.41 standards
    • Single high-energy solid-state semiconductor surge suppression circuitry per phase
    • Real-time diagnostic visual indicator shows power and suppression status for each protected phase
    • Each phase provided with independent thermal fuse protection
    • Feature a low VPR to ensure protection of sensitive electronic devices including LCD TVs, PDAs and computers
    • Standard J-Box enclosure with pre-punched standard knock-outs can be easily surface mounted in typical frame construction
    • Internal DIN rail module provides for easy replacement (on Type 1 outdoor unit only)
    • All versions are compatible with Leviton Decora Home Controls


    • Protection for whole-house lighting control systems
      While this whole house surge suppressor is great for protecting computers, TVs and other electronics, it can also protect against damage to lighting control systems such as INSTEON, X10, or Z-Wave. Voltage spikes of several hundred or even thousands of volts generated by outside sources do occasionally occur. We know of customers that have had several X10 components fail simultaneously for no apparent reason except for one clue, home control components that happened to be plugged into a surge suppressor/surge protector power strip were still functional.

      If you are going to be using a significant number of remote control light switches in your home, adding a whole house surge protector will give you a good insurance policy against costly damage to both your home control system and other delicate electrical equipment in your house.

      We recommend that whole-house surge protector units be installed by a licensed electrician.

      This latest version of the Leviton Whole-House Surge Suppressor has greatly increased surge handling capacity. This surge protector unit is an essential component when installing extensive whole-house lighting control systems. LEDs on the panel show operation status.

      Installation Connections:
    • J1=L1
    • J2=L2
    • J4=Neutral
    • J5=Ground

  • Specifications

    Manufacturer: Leviton
    Manufacturer Product No.: 51120-1
    UPC: 07847782764
    Voltage Configuration: 50kA
    Surge Counter: No
    Disconnect Switch: No
    Enclosure Rating: NEMA 1
    Protection Mode: 4-Mode
    Diagnostics: LED
    MCOV: 150V
    AC Noise Rejection: N/A
    Standards and Certifications: UL1449 / CSA / ANSI/IEEE Cat ABC
    Warranty: 5 Year Limited


  • Reviews 1 - 10 of 102

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    Review of 4860 Review by JEFF
    Review of 4860
    Rating

    Had them professionally installed. Assume that they are now protecting the whole house.

    Posted on 2/15/2014

    Review of 4860 Review by GEORGE
    Review of 4860
    Rating

    The unit looks to be very solid.I didn't like the way the terminals were positioned. I used #10 gauge solid wire and it was difficult getting the unit in the box and secured. Beside that nice finish product.

    Posted on 1/29/2014

    Review of 4860 Review by THOMAS
    Review of 4860
    Rating

    Easy to install for an electrician. Does what it is suppose to do. Looks good in the wall under the CB panel. What more is there?

    Posted on 12/13/2013

    Review of 4860 Review by TIMOTHY
    Review of 4860
    Rating

    Seems well built and is as described. I can't speak to its functionalty as I haven't had a power surge to test it. I would imagine it will have to be replaced when that happens, so the real test will be whether I have to replace anything else with it.

    Posted on 10/19/2013

    Review of 4860 Review by RUSSELL
    Review of 4860
    Rating

    Picking this up for a second home after getting one for my primary house many years ago.

    Posted on 10/13/2013

    Review of 4860 Review by Paul L
    Review of 4860
    Rating

    I have my computers, and hiend stereo to worry about which are over $25k
    I had this Leviton box installed, we have had the tv and power go out due to lightening in the area, but Never a piece of equipment ruined!!

    Posted on 9/26/2013

    Review of 4860 Review by Czar
    Review of 4860
    Rating

    To provide the best protection, should be installed closest to the incoming power leads - that way it takes the hit prior to other circuits.

    Posted on 8/3/2013

    Review of 4860 Review by JORGE A.
    Review of 4860
    Rating

    I installed it but I hope to never use it. Just like an insurance policy.

    Posted on 6/27/2013

    Review of 4860 Review by CLINT E.
    Review of 4860
    Rating

    Excellent service and product, fast delivery

    Posted on 5/29/2013

    Review of 4860 Review by BRIAN F.
    Review of 4860
    Rating

    Our elecrician was familiar with this particular unit, gave it the highest rating in comparison to other similar units. It only took him 30 minutes to install to our main elect. panel box.

    Posted on 4/26/2013

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