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Klein Tools ET310 AC Circuit Breaker Finder with Integrated GFCI Outlet Tester

4.7 out of 5 stars 9,056 ratings

Price: $42.97 & FREE Returns
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Style: Circuit Breaker Finder
Circuit Breaker Finder
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Brand Klein Tools
Style Circuit Breaker Finder
Color Circuit Breaker Finder
Item Weight 7.2 Ounces
Item Dimensions LxWxH 10.96 x 2.16 x 1.39 inches

About this item

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  • This circuit breaker finder can quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical outlet or fixture is connected
  • Tester consists of two parts: a Transmitter, connected to the electrical outlet or fixture and a Receiver, used to scan the panel to locate the correct breaker
  • Receiver delivers clear visual and audible indications when the correct breaker has been located
  • Operates on 90-120V AC circuits
  • Transmitter incorporates a GFCI outlet tester to inspect the wiring condition at the electrical outlet and test GFCI devices
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Frequently bought together

  • Klein Tools ET310 AC Circuit Breaker Finder with Integrated GFCI Outlet Tester
  • +
  • Circuit Breaker Finder Accessory Kit, Circuit Breaker Leads, Circuit Breaker Adapters Klein Tools 69411
  • +
  • Klein Tools 69401 Multimeter Carrying Case
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What's in the box

  • Includes Transmitter, Receiver, user manual, and 9V battery for Receiver

  • From the manufacturer

    Klein Tools klein klein klein
    Mfg. No. 69411 44217 5139 5139PAD
    Description Circuit Breaker Finder Accessory Kit Electrician's Pocket Knife w/#2 Phillips Canvas Zipper Bag Padded Zipper Tool Bag
    klein klein Klein Tools klein
    Mfg. No. ET40 ET45 RT310 MM400
    Description Electronic AC/DC Voltage Tester AC/DC Voltage Tester AFCI /GFCI Outlet Tester Digital Multimeter, Auto-Ranging, 600V

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    Customer Rating 4.7 out of 5 stars (9056) 4.8 out of 5 stars (1566) 4.7 out of 5 stars (53) 4.4 out of 5 stars (4331) 4.1 out of 5 stars (154) 4.8 out of 5 stars (470)
    Price $42.97 $19.97 $20.99 $29.99 $18.28 $69.99
    Shipping FREE Shipping. Details FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping. Details FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping. Details
    Sold By Amazon.com Amazon.com ankhoh Amazon.com Casesack Amazon.com
    Item Dimensions 10.96 x 2.16 x 1.39 inches 4.53 x 1.16 x 2 inches 1 x 1 x 1 inches 0 x 0 x 0.5 inches 9 x 5 x 2.75 inches 13.07 x 8.5 x 2.95 inches

    Product description

    Style:Circuit Breaker Finder

    The Klein Tools ET310 Circuit Breaker Finder with Integrated GFCI Outlet Tester is a digital circuit breaker finder used to locate the correct circuit breaker in a panel to which an electrical outlet or fixture is connected. The Transmitter is connected to the electrical outlet or fixture in the circuit while the receiver is used to scan the breakers in the circuit panel. The Transmitter also features a GFCI outlet tester. Circuit Breaker Finder locates the correct breaker in a panel. Tester consists of two parts: a Transmitter and a Receiver. GFCI Outlet Tester integrated in receiver. Transmitter docks in the Receiver for convenient storage as a single item when tester is not is use. Transmitter incorporates a three-pin plug for connecting to North-American-style grounded electrical outlets. The transmitter may be connected to other electrical fixtures using optional accessories which are sold separately (Cat. No. 69411). Receiver powers off automatically after approximately three minutes of non-use to conserve battery life. Transmitter is powered by the circuit when connected to the electrical outlet or fixture. Low battery indicator. Easily accessible battery compartment. Uses one 9V battery in receiver only; Transmitter does not require a battery. Built to withstand a 6.6-Foot (2 m) drop. CAT II 120V safety rating. Measurement Category II is applicable to test and measuring circuits connected directly to utilization points (socket outlets and similar points) of the low-voltage MAINS installation. Includes Transmitter, Receiver, user manual, and 9V battery (for Receiver). For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857.

    Product information

    Style:Circuit Breaker Finder

    Technical Details

    Additional Information

    Warranty & Support

    Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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    Product guides and documents

    Important information

    Safety Information

    Read, understand, and follow all warnings and instructions before operating testers.Before each use, verify tester operation by testing on a known live and correctly wired receptacle and circuit.DO NOT use if the tester appears damaged in any way. Always consult a qualified electrician to resolve wiring problems.Tester is intended for indoor use only. The tester is designed for use with 120V AC electrical systems. DO NOT connect to higher voltage electrical supplies.If using accessories to connect to bare wires ensure that the circuit is not energized before inspecting, applying, or removing the transmitter.Exercise extreme caution around energized, bare wires, especially when working in or around an open breaker panel.

    Bulb Voltage

    120 volts


    Customer Questions & Answers

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    9,056 global ratings
    How are ratings calculated?

    Top reviews from the United States

    Reviewed in the United States on October 13, 2020
    Style: Circuit Breaker FinderVerified Purchase
    139 people found this helpful
    Report abuse
    Reviewed in the United States on January 25, 2020
    Style: Circuit Breaker FinderVerified Purchase
    116 people found this helpful
    Report abuse
    Reviewed in the United States on August 9, 2020
    Style: Circuit Breaker FinderVerified Purchase
    Customer image
    5.0 out of 5 stars Works great!
    By DWWantz on August 9, 2020
    By myself, I was able to trace every outlet and every overhead light in my house. 30 circuits in all. Using the sending unit that is also a circuit checker, I found an open ground that had bit me about a week ago when i was tracing a line of armored cable. Now I have a nice grid listing all the circuits and all the crazy ways that other owners have tapped into wires for additional runs.

    Just slowly run the nose of the receiver down the breakers TWICE. Ignore any signals on the first run. When you run the nose of the checker again, the right breaker will sound a light up.
    Images in this review
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    Customer image
    78 people found this helpful
    Report abuse
    Reviewed in the United States on January 1, 2020
    Style: Circuit Breaker FinderVerified Purchase
    56 people found this helpful
    Report abuse
    Reviewed in the United States on August 2, 2019
    Style: Circuit Breaker FinderVerified Purchase
    Customer image
    4.0 out of 5 stars Handy tool
    By Glen James on August 2, 2019
    I've been a fan of Klein tools for quite a while, although I don't have that many of them. Their hand tools... screwdrivers, cutters and such are always first rate. It's the brand I see the pro's using the most. This circuit breaker finder is a handy tool even though the sensitivity direction could be better. The receiver tends to start reporting the correct circuit about two breakers ahead of and behind the search. You have to really slow down to make sure you're on the circuit that has the transmitter attached. At any rate it's still better than having to turn off several breakers in order to find the correct one. Saves a lot of steps too.
    Images in this review
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    Customer imageCustomer image
    47 people found this helpful
    Report abuse
    Reviewed in the United States on April 22, 2021
    Style: Finder + AccessoriesVerified Purchase
    Customer image
    2.0 out of 5 stars Not Good With Arc Fault Breakers
    By Stephens215 on April 22, 2021
    After some frustration trying to find the right breaker and getting a lot of false positives, I noticed that the Klein circuit breaker finder was alerting to every single arc fault breaker in my panels. I unplugged the transmitter and, even with the transmitter unplugged, as you can see in the picture, it still gave a false positive on all my arc fault breakers. I called Klein and spoke to a technician -- he said that arc fault breakers transmit the same signal as their transmitter and the device "will not work for you." I returned it.
    Images in this review
    Customer image
    Customer image
    25 people found this helpful
    Report abuse
    Reviewed in the United States on March 11, 2020
    Style: Circuit Breaker FinderVerified Purchase
    32 people found this helpful
    Report abuse

    Top reviews from other countries

    DeanR
    4.0 out of 5 stars Works Some of the Time but not Always
    Reviewed in Canada on April 3, 2021
    Style: Circuit Breaker FinderVerified Purchase
    3 people found this helpful
    Report abuse
    The Trust
    1.0 out of 5 stars Good piece for waist the hard work money
    Reviewed in Canada on August 18, 2020
    Style: Circuit Breaker FinderVerified Purchase
    5 people found this helpful
    Report abuse
    Tyler Highfield
    1.0 out of 5 stars Trash
    Reviewed in Canada on August 16, 2020
    Style: Circuit Breaker FinderVerified Purchase
    7 people found this helpful
    Report abuse
    Penny
    4.0 out of 5 stars Not perfect but it works
    Reviewed in Canada on September 13, 2020
    Style: Circuit Breaker FinderVerified Purchase
    3 people found this helpful
    Report abuse
    IMac
    4.0 out of 5 stars Handy unit to have
    Reviewed in Canada on February 17, 2021
    Style: Circuit Breaker FinderVerified Purchase
    One person found this helpful
    Report abuse