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Internet # 202330830

Model # ET300

Store SKU # 365518

Store SO SKU # 1000504476

Digital Circuit Breaker Finder

$4016
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  • Circuit Breaker Finder has 90 - 120V operation
  • Microprocessor controlled for more reliable identification
  • Includes a 2-year warranty
  • View More Details
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Product Details

Designed to automatically find the breaker of any standard 120-volt electrical outlet, this Digital Circuit Breaker Finder is the perfect addition to your tool kit. Each finder features a transmitter that reaches up to 1,000 ft. so you have ample detection range. The display includes a flashing arrow indicator that lets you know when you've located a breaker.

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

37Questions
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Q:As I tested the various outlets with my Klein Circuit tester, everything signaled the same circuit. So, I tried the test without the transmitter plugged into anything and the tester still lit up for that circuit. How is that possible?
by|Jun 21, 2023
1 Answer
Answer This Question

A:  For assistance with your Circuit Breaker Finder please contact Klein Tools Customer Service 1-800-553-4676

by|Jun 21, 2023
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    Q:video show it homing in on two breakers - how do you zero in on the correct breaker
    by|Mar 13, 2023
    1 Answer
    Answer This Question

    A:  1. Identify the wall outlet or fixture for which the breaker must be determined. 2. Safely check that the outlet or fixture is live. 3. Plug in the transmitter. Its LED will light if it is receiving power. 4. Move to the breaker panel with the receiver. 5. Turn on the receiver by pressing, but not holding, the power button. You will hear a beep and see its LED lit. 6. Position the receiver perpendicularly on the breakers in the panel with the power button pointing up. 7. Slowly scan all breakers in the panel once. Ignore any beeps or indications, as the receiver is learning the panel. 8. Scan all breakers a second time. This time, the receiver will beep and illuminate the green arrow only at the correct breaker. 9. Power off the receiver by pressing and holding the power button. Return to the outlet or fixture and remove the transmitter

    by|Jul 23, 2023
      1 found this answer helpful
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      Q:will this work with both breakers and the older screw-in fuses?
      by|Jan 24, 2022
      4 Answers
      Answer This Question

      A:  yes. It transmits a signal through the wires

      by|Jan 25, 2022

        A:  Yes

        by|Jan 24, 2022

          A:  Not sure, never tried with screw in fuses.

          by|Jan 24, 2022

            A:  No

            by|Jan 28, 2022
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              Q:There's no power to outlet. All breakers are flipped to ON. Since there's no power, which tool will tell me which breaker bad?
              by|Oct 25, 2021
              1 Answer
              Answer This Question

              A:  The ET300 is not designed to work on non-energized circuits.

              by|Mar 29, 2023
                1 found this answer helpful
                Showing 1-4 of 37
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                Customer Reviews

                3.8 out of 5
                (482)
                • 3.8
                  out of 482 reviews
                • 75% recommend this product
                Filter by:
                Showing 1-10 of 482 reviews
                Great tools !!!
                [This review was collected as part of a promotion.] You can’t go wrong buying this complete set of tools. Very handy and easy to use . Help you find the right breaker you need to shut down.
                by
                  • Recommended
                  Works well, but about the Switch...
                  The Switch is way to easy to turn on in a case. I tried the O Ring idea, and it worked but impeded the pressing of the Switch and was very difficult to remove. So I’m using a small paper clip and that takes care of the issue for me.
                  by
                    • Recommended
                    1 found this review helpful
                    I was able to use this to trace a circuit from a screw-in fuse box to an outlet without removing ...
                    I was able to use this to trace a circuit from a screw-in fuse box to an outlet without removing all the fuses.
                    by
                    • Verified Purchase
                    • Recommended
                    1 found this review helpful
                    Doing engineering work on commercial building had hard time locating breakers for exterior GFI. T...
                    Doing engineering work on commercial building had hard time locating breakers for exterior GFI. This device located the breaker on the very first try over 800 feet away. Easy to use, light weight. The only thing I didn't like is the button will turn the device on when you move it around or put into your work bag ext...
                    by
                    • Verified Purchase
                    • Recommended
                    2 found this review helpful
                    On/Off button is a joke... who designed this thing? You can't store it or carry it anywhere that ...
                    On/Off button is a joke... who designed this thing? You can't store it or carry it anywhere that you might breathe on the button - it turns on and beeps instantly. You have to hold it for 3 seconds to shut it off. The thing works as advertised but is useless unless you want to unscrew and remove the battery cover and battery every time your done using it, then replace when needed...? It supposedly has an auto off, but I tried storing it in my bag with my other new Klein tester and it kept beeping at the slightest touch... RETURNING IT along with my Klein non-contact voltage tester, which after one day intermittently will not beep when voltage is located. In fact, I'm returning all of my newly purchased Klein tools - not impressed.
                    by
                      1 found this review helpful
                      This product is extremely easy to use. It can quickly identify unknown or unlabeled breakers in m...
                      This product is extremely easy to use. It can quickly identify unknown or unlabeled breakers in moments. Great for inspection services, handy man and home owner. The price is more than reasonable as a first step indicating tool. It will turn a 2 hour, up and down the stairs job into a 20 minute piece of cake. I would recommend it for every tool bag.
                      by
                      • Verified Purchase
                      • Recommended
                      2 found this review helpful
                      It does what it's supposed to do. Easy to use (follow the instructions... especially about let...
                      It does what it's supposed to do. Easy to use (follow the instructions... especially about letting the tool learn the panel.) Nice loud tone and bright green arrow... Signal was strong enough for the 1800 Sq Ft House I was working on. The price is right. The reason I'm giving it 4 stars instead of 5 stars is the annoying on-switch function. The switch to turn it on is very touchy. You barely bump it on anything the unit powers up. (In your tool bag)... A hard case would be nice or an On-Switch that has more resistance or one that you must hold down for a full one or two seconds. It functions this way during the off-cycle to power down.. You must hold it down to have it turn off, but you can turn it on by barely touching the switch...
                      by
                        • Recommended
                        5 found this review helpful
                        I had a series of outlets and some unused switches that need to be removed or renewed. I used thi...
                        I had a series of outlets and some unused switches that need to be removed or renewed. I used this on the outlets to determine the correct breaker to turn off. This breaker was in a large panel of thin series 2 pole 110 breakers along with a few 220 V breakers. Hooked up the test leads plugged in the transmitter scanned the panel and first time found the breaker. On another attempt possible my fault I was mistaken by one breaker on the thin series 110 V. I think I was not careful enough to allow the breaker finder to beep on the correct half of the breaker. I wish that I bought this years ago. Small price to pay for the quick results in finding the correct breaker. As stated in prior comments, go slowly over the panel of breakers. I also a time or two turned off then back on the sensor to double check myself. My panel was in a back room maybe 60 feet from the switch/outlets.
                        by
                        • DIY
                        • Verified Purchase
                        • Recommended
                        3 found this review helpful
                        Let me start by saying this unit works great if you use it correctly and follow the directions. I...
                        Let me start by saying this unit works great if you use it correctly and follow the directions. It would at best identify two breakers side by side as the target but I'm fine with that...it's better than having to test all 50 breakers to find the one you need! I agree with the reviews about the on-off switch being much too sensitive, but there is an easy fix! Take a small o-ring and insert it under the lip of the switch, this secures it from being turned on in the tool bag but still allows regular operation (see photo attached) This idea cures the problem and makes this unit worth the money.
                        by
                          • Recommended
                          23 found this review helpful
                          Circuit tracing made easy
                          Perfect for when you are doing electrical work on your home and need to find a lost, unknown electrical circuit.
                          by
                          • DIY
                          • Recommended
                          8 found this review helpful
                          Showing 1-10 of 482 reviews

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                          Test Meter TypeCircuit Breaker FinderCircuit Breaker FinderSpecialty Meter/TesterCircuit Breaker Finder
                          IncludedBatteriesBatteriesBatteries, Extra Pins/ProbesBatteries
                          THD SO SKU1000504476
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