Amprobe ECB50A Circuit Breaker Finder

(8 customer reviews)

  • Three testers in one:
    • Identify circuit breaker to an electrical socket
    • Trace AC cables in walls
    • Sort wires in a bundle
  • Microprocessor controlled
  • Coded transmission allows easy separation of transmitter signal
  • Audible and visual indicators
  • Low battery indicator
  • Cable tracing depth – up to 15″
  • NEMA 5-15 plug
SKU: 3016966 Category:


With one tool, the Amprobe ECB50A Breaker Tracer, you can perform three types of tests: identify the circuit breaker to an electrical socket, trace AC cables in walls up to 15″, or sort wires in a bundle.


Transmitter voltage range 100 V to 250 V
Power consumption Approximately 1 W
Frequency range 50/60 Hz
Transmission frequency Approximately 8 kHz
Transmitter frequency Approximately 10 Hz
Receiver tracing depth for fuse identification Approximately 0 to 10 cm (4 in) depending on local conditions
Tracing depth for cable location Approximately 0 to 40 cm (15 in) depending on local conditions


What’s Included

  • Transmitter
  • Receiver
  • Batteries (installed)


Datasheet »
Product Manual »

8 reviews for Amprobe ECB50A Circuit Breaker Finder

  1. buccs407

    What a great tool

    This is a great tool in the field. I use it as an engineer when conducting examinations of new projects

    ✔ Yes, I recommend this product.

  2. Handyman1959

    Quick, easy to use.

    Too often I find that Circuit breakers are not labeled. Turning off and on all of the breakers until I find th right one is time consuming and I need to reset clocks. I use this tool to get the right circut and label it when I need to work on someones electrical system, It is compact and lightweight and easy to use.

    ✔ Yes, I recommend this product.

  3. DavidB

    Makes it easy to find the breaker.

    I have always had a hard time finding out which outlets went to a specific breaker. This unit takes all the guesswork out and its a lot safer. Flipping breakers on and off to find the right one is a thing of the past.

    ✔ Yes, I recommend this product.

  4. larrydee47

    so easy to use

    i don’t actually owe one i use my friends all the time so easy to use just plug it in and the buzzer tell you where to look. promblem sovled

    ✔ Yes, I recommend this product.

  5. Oley

    Easy to Use, Works Well

    I enjoy this time-saving device and it is always spot on. Because I do most of my home remodeling projects myself, including having moved an entire wall with outlets in a home I just purchased, this device saves me a lot of energy walking up and down stairs to the outlet and to the breaker box. If you are a homeowner and you don’t own one of these devices, you are making your life a lot more difficult. Check it out, it works great!

    ✔ Yes, I recommend this product.

  6. buyerrev

    good three in one tester for the price

    The tester’s sensitivity has to be ajusted to narrow sensing range , if not it will tone multiple breakers on the side of the target breaker. It would be wise to read the instructions to understand range and sensitivity before use.

    ✔ Yes, I recommend this product.

  7. mhealy61

    Has Never Let me Down

    Having over 30 years in the electrical business I have used plenty of circuit tracers. A lot of them will get you close or narrow it down to a few circuits to choose from.

    The ECB 50A is easy to use and is always on the money.
    I would definately recommend it to a friend.

    Having both pieces snap together might be a nice improvement.

    ✔ Yes, I recommend this product.

  8. Christope

    RV Wiring

    Worked great at RV Campground to trace hookups to main CB panel. I tried to use it inside my RV and was unable to identify which CB was on a certain circuit.

    ✘ No, I do not recommend this product

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