---
product_id: 12288112
title: "Leviton 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure, 51120-1"
brand: "leviton"
price: "B/.861"
currency: PAB
in_stock: true
reviews_count: 11
category: "Leviton"
url: https://www.desertcart.com.pa/products/12288112-leviton-120-240-volt-panel-protector-4-mode-protection-light
store_origin: PA
region: Panama
---

# 50kA max surge current 4-mode multi-phase protection NEMA 1 durable enclosure Leviton 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure, 51120-1

**Brand:** leviton
**Price:** B/.861
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your peace of mind — surge protection that works as hard as you do!

## Quick Answers

- **What is this?** Leviton 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure, 51120-1 by leviton
- **How much does it cost?** B/.861 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/12288112-leviton-120-240-volt-panel-protector-4-mode-protection-light)

## Best For

- leviton enthusiasts

## Why This Product

- Trusted leviton brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Sleek NEMA 1 Enclosure:** Compact, surface-mount design fits seamlessly into modern panel setups without fuss.
- • **Robust 50kA Surge Capacity:** Handles extreme power surges to safeguard your entire home or office setup.
- • **UL 1449 4th Edition Certified:** Industry-trusted safety and performance standards for peace of mind.
- • **Real-Time Diagnostic Indicator:** Instant visual status updates keep you informed on protection health at a glance.
- • **Comprehensive 4-Mode Protection:** Defends all electrical phases, ensuring zero weak spots in your power defense.

## Overview

The Leviton 120/240 Volt Panel Protector (model 51120-1) is a UL-listed, light commercial and residential-grade surge protective device featuring a 50kA max surge current rating and 4-mode protection. Housed in a NEMA 1 enclosure, it mounts directly to your electrical panel and includes a real-time diagnostic indicator to monitor power and suppression status. Designed to shield sensitive electronics from damaging voltage spikes, it’s a smart investment for anyone serious about safeguarding their home or business infrastructure.

## Description

Product Description 7 INCH W X 4.06 INCH D X 7 INCH H SIZE; BRANCH PANEL USED ON; 50/60 HZ FREQUENCY RATING; 12 AWG LEAD WIRE CONNECTION TYPE; UL (CANADA AND US) APPROVAL; RESIDENTIAL APPLICATION; 120/240 VAC VOLTAGE RATING; PANEL MOUNTING; NEMA 1 ENCLOSURE From the Manufacturer Leviton's Surge Protection Devices can be used individually or as part of a coordinated application strategy, to protect sensitive electronic equipment, in industrial, commercial and residential locations, from the stress and degradation inflicted by voltage transients. Leviton Surge Protection Devices are listed to UL 1449 Standards. Leviton's outstanding Surge Protection Devices divert damaging voltage transients, or surges, away from electronic equipment. Transients are diverted away from sensitive micro circuitry, providing protection against catastrophic failure, costly downtime and data disruptions. 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure.

Review: Best Installed by a Professional - Although I am a graduate electrical engineer and formerly a licensed electrician, installing this Leviton 51120-1 120/240 Volt Panel Protector and connecting it to my modern Leviton electric panel was no small project. Without such a background, a do-it-yourself homeowner might be prudent to hire an electrician. To gain access to one of my main panel's knock-outs, so I could install a 1/2" X 3 1/2" conduit nipple between the two, I used a hole saw to create an opening through a wooden stud. That required a right angle drill because a conventional drill would not fit into the 6" square opening required for the Panel Protector. The knock out on the electric panel, of course, needed to be exactly aligned with the knockout on the panel protector. Careful measurements are important. Installing the conduit nipple between the two metal cabinets, required lock nuts and bushings on each end before threading the wire. Using metal conduit between my panel and this device helps to enhance ground continuity in addition to the green grounding wire. The extra grounding should improve protection. Instructions with this surge protection unit suggests connecting it to the panel through a two-pole 20-amp or 30-amp circuit breaker. My choice was a 30-amp breaker which calls for #10 copper wire. I used THNN wire for the connections, which included L1 & L2 hot wires, a white neutral and a green grounding wire. A DEWALT Impact ready right angle attachment to my impact tool enabled me to use screws to mount and secure the panel protector to the wooden stud. Turning on the breaker illuminated the two green lights on this device showing that it is actively protecting. I'm optimistic that this surge protection will be effective for our home, which has had some power surge issues in the past. The photo shows my modern Leviton panel with the Leviton surge protection unit to the right.
Review: This is a whole house surge protector. - A power surge on the incoming utility line consists of a very short duration high voltage Spike. For about three to seven milliseconds the line voltage will rise by several hundred volts. Voltage is like the water pressure in a hose, current is like the water itself. When voltage spikes, it's driving the current through the circuit at extremely high pressure, so to speak. The voltage Spike will damage digital equipment. Most manufacturers warranties, especially those of internet capable digital appliances do not cover voltage spikes. In addition to this product which should be installed by a licensed electrician, I also purchased 20 amp surge protected Outlets for each of my new appliances. The outlets are available on desertcart for about $23 each. They install like any normal outlet would, but contain surge protection built into the outlet. Having the whole house surge protector and individual outlets at the appliance locations gives me great peace of mind that my appliances are safe from voltage spikes. It will also protect your big screen 4K TV and the audio system that goes with it, along with your computer system and any laptops or cell phones that are plugged into wall Chargers or Outlets. This product does not require a permit to be installed at your panel board. But please, unless you are a trained electrician, do not attempt to install it yourself. Most electricians will charge $150 to $250 to install it. Given the low cost of the surge protector itself I consider an investment of less than $500 to be a great insurance policy that you'll never have to pay another premium on.

## Features

- 120/240V Single Phase Panel Mount Surge Protective Device, 4-Mode Protection, 50kA Max Surge Current Rating, NEMA 1 Enclosure, UL 1449 4th Edition Type 2
- Type 2 Single Phase Surge Panel with 4-Mode Protection
- Real-time diagnostic visual indicator shows power and suppression status for each protected phase
- Standard J-Box enclosure with pre-punched standard knock-outs can be easily surface mounted in typical frame construction
- Features a low VPR to ensure protection of sensitive electronic devices including LCD TVs and computers
- NEMA 1 enclosure

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00081K55Q |
| Best Sellers Rank | #232,307 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #463 in Electrical Boxes |
| Date First Available | September 8, 2004 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.29 pounds |
| Item model number | 51120-1 |
| Manufacturer | Leviton |
| Product Dimensions | 8.25 x 4.75 x 8.25 inches |

## Product Details

- **Brand:** Leviton
- **Compatible Devices:** All
- **Material:** Metal
- **Product Dimensions:** 7"L x 4.06"W
- **Voltage:** 240 Volts

## Images

![Leviton 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure, 51120-1 - Image 1](https://m.media-amazon.com/images/I/71MgM1rmbxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best Installed by a Professional
*by L***R on October 22, 2024*

Although I am a graduate electrical engineer and formerly a licensed electrician, installing this Leviton 51120-1 120/240 Volt Panel Protector and connecting it to my modern Leviton electric panel was no small project. Without such a background, a do-it-yourself homeowner might be prudent to hire an electrician. To gain access to one of my main panel's knock-outs, so I could install a 1/2" X 3 1/2" conduit nipple between the two, I used a hole saw to create an opening through a wooden stud. That required a right angle drill because a conventional drill would not fit into the 6" square opening required for the Panel Protector. The knock out on the electric panel, of course, needed to be exactly aligned with the knockout on the panel protector. Careful measurements are important. Installing the conduit nipple between the two metal cabinets, required lock nuts and bushings on each end before threading the wire. Using metal conduit between my panel and this device helps to enhance ground continuity in addition to the green grounding wire. The extra grounding should improve protection. Instructions with this surge protection unit suggests connecting it to the panel through a two-pole 20-amp or 30-amp circuit breaker. My choice was a 30-amp breaker which calls for #10 copper wire. I used THNN wire for the connections, which included L1 & L2 hot wires, a white neutral and a green grounding wire. A DEWALT Impact ready right angle attachment to my impact tool enabled me to use screws to mount and secure the panel protector to the wooden stud. Turning on the breaker illuminated the two green lights on this device showing that it is actively protecting. I'm optimistic that this surge protection will be effective for our home, which has had some power surge issues in the past. The photo shows my modern Leviton panel with the Leviton surge protection unit to the right.

### ⭐⭐⭐⭐⭐ This is a whole house surge protector.
*by M***L on April 14, 2024*

A power surge on the incoming utility line consists of a very short duration high voltage Spike. For about three to seven milliseconds the line voltage will rise by several hundred volts. Voltage is like the water pressure in a hose, current is like the water itself. When voltage spikes, it's driving the current through the circuit at extremely high pressure, so to speak. The voltage Spike will damage digital equipment. Most manufacturers warranties, especially those of internet capable digital appliances do not cover voltage spikes. In addition to this product which should be installed by a licensed electrician, I also purchased 20 amp surge protected Outlets for each of my new appliances. The outlets are available on Amazon for about $23 each. They install like any normal outlet would, but contain surge protection built into the outlet. Having the whole house surge protector and individual outlets at the appliance locations gives me great peace of mind that my appliances are safe from voltage spikes. It will also protect your big screen 4K TV and the audio system that goes with it, along with your computer system and any laptops or cell phones that are plugged into wall Chargers or Outlets. This product does not require a permit to be installed at your panel board. But please, unless you are a trained electrician, do not attempt to install it yourself. Most electricians will charge $150 to $250 to install it. Given the low cost of the surge protector itself I consider an investment of less than $500 to be a great insurance policy that you'll never have to pay another premium on.

### ⭐⭐⭐⭐⭐ Good Value. Quality product.
*by M***. on June 4, 2025*

Easy installation (inside wall). Looks beautiful!

## Frequently Bought Together

- Leviton 51120-1 120/240 Volt Panel Protector, 4-Mode Protection, Light Commercial/Residential Grade, In NEMA 1 Enclosure
- Intermatic AG3000 120/240 VAC Universal HVAC Surge Protective Device - Comprehensive Surge Protection, TPMOV Technology, Watertight Enclosure - UL Listed and Reliable
- EATON CHSPT2ULTRA Ultimate Surge Protection 3rd Edition, 2.38" Length, 5.25" Width 7.5" Height

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-03-07*