Top 10 Best circuit breaker finder tool in 2026

Last Updated - 6/6/2026

🏆Best Choice

KLEIN TOOLS

Klein Tools ET310 AC Circuit Breaker Finder, Electric and Voltage Tester with Integrated GFCI Outlet Tester

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•ACCURATE CIRCUIT BREAKER IDENTIFICATION: Quickly locate the correct breaker with precision using our circuit breaker finder, ensuring efficient electrical troubleshooting
•TWO-PART SYSTEM: Consists of a Transmitter connected to the outlet/fixture and a Receiver to scan the panel, allowing for easy and accurate breaker identification
•CLEAR INDICATIONS: The Receiver provides visual and audible cues when the correct breaker is found, ensuring a hassle-free locating process
•WIDE COMPATIBILITY: Operates on 90-120V AC circuits, making it suitable for a variety of electrical systems and installations
•BUILT-IN GFCI TESTER: The Transmitter includes a GFCI outlet tester, enabling you to inspect wiring conditions and test GFCI devices for added safety
•CONVENIENT STORAGE: The Transmitter docks in the Receiver, offering a compact storage solution, keeping the components together when not in use
•UNIVERSAL CONNECTIVITY: The Transmitter features a three-pin plug for easy connection to North-American-style grounded electrical outlets, ensuring seamless compatibility

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$49.97

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KLEIN TOOLS

Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters and Case

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•ACCURATE CIRCUIT BREAKER IDENTIFICATION: Quickly locate the correct breaker with precision using the transmitter and receiver of the circuit breaker finder, ensuring efficient electrical troubleshooting
•CLEAR INDICATIONS: The Receiver provides visual and audible cues when the correct breaker is found, ensuring a hassle-free locating process on 90-120V AC circuits
•BUILT-IN GFCI TESTER: The Transmitter includes a GFCI outlet tester, enabling you to inspect wiring conditions and test GFCI devices for added safety
•LIGHT SOCKET AND GROUNDING ADAPTERS: Easily find the correct circuit for a lighting fixture with the light socket adapter, and use the included 3-prong to 2-prong grounding adapter for added convenience
•ALLIGATOR CLIP ADAPTER: Enables testing on bare wires, providing versatile usage options
•PREMIUM CARRY CASE: Dense foam organizes and protects all components in a premium hard carrying case
•CONVENIENT KIT: Includes ET310 transmitter and receiver, light socket adapter, 3-prong to 2-prong adapter, alligator clips adapter, user manual, 9V battery for receiver, and a premium carrying case with foam insert

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$69.98

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KLEIN TOOLS

Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•SMART BUY: A complete, high-performance kit that offers convenience and value
•ACCURATE CIRCUIT IDENTIFICATION: Circuit Breaker Tool Kit helps locate the correct circuit breaker for electrical outlets or fixtures, saving time and effort
•CLEAR VISUAL AND AUDIBLE INDICATIONS: Digital Circuit Breaker Finder with GFCI Outlet Tester (Cat. No. ET310) receiver provides clear indications when the correct breaker is found
•VERSATILE OPERATION: Works on 90-120V AC circuits, suitable for various residential and commercial applications
•GFCI OUTLET TESTING: Transmitter features a built-in GFCI outlet tester to inspect wiring conditions and test GFCI devices
•ADDITIONAL ACCESSORIES: Circuit Breaker Finder Accessory Kit (Cat. No. 69411) includes a 3-prong to 2-prong grounding adapter for enhanced compatibility
•LIGHT SOCKET ADAPTER: Light socket adapter allows for easy circuit identification in lighting fixtures

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$59.99

$64.98

-8%

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KAIWEETS

KAIWEETS Circuit Breaker Finder with LCD Display, GFCI Outlet Tester, Electrical Circuit Tracer Tool with NCV Test & Flashlight, Includes Carrying Case and Adapters- KT301P

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•All-in-One Circuit Diagnosis: KT301P circuit breaker finder Easily locate breakers, check outlet wiring, and test GFCI protection—all with one compact tool. Combines a Circuit Breaker Finder, Outlet Tester, and GFCI Tester for fast, reliable troubleshooting in residential or commercial settings
•Large LCD Screen with Backlight: Displays real-time voltage (30–150V), outlet wiring status, and signal strength for faster, more intuitive diagnostics. Backlit indicators make it easy to read in dimly lit breaker panels or tight spaces. Clear visuals eliminate guesswork, making it ideal for professionals and DIYers working with complex circuit breaker panels
•GFCI Outlet Tester: The transmitter doubles as a GFCI outlet tester, featuring an automatic trip testing function. Red/green LED indicators provide clear visual feedback, while the large LCD screen displays detailed wiring conditions to accurately diagnose 7 common wiring faults. The auto-hold function retains the latest outlet test results and voltage reading even after unplugging
•Non-Contact Voltage Test: The receiver includes a Non-Contact Voltage Test function, which detects nearby voltage sources quickly and safely. This added feature allows you to locate live circuits without direct contact, enhancing safety and providing a comprehensive testing solution
•Complete Accessory Kit and Carrying Case: This Circuit Breaker Finder kit includes essential accessories like a 3-prong to 2-prong adapter, light socket adapter, and alligator clip adapter for increased compatibility. The durable carrying case keeps your device and accessories organized, secure, and portable, making it convenient for on-the-go professionals

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$55.99

$59.99

-7%

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NOYAFA

NOYAFA NF-827 Circuit Breaker Finder Tool with 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit Tester with Storage Case, Sensitivity Adjustment

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•AC 90-120V Accurate Circuit Breaker Quickly Identification: Identifies circuit breakers on energized 120V electrical systems, breaker detector finder compatible with standard 90 to 120V AC 50/60Hz breaker system
•GFCI TESTER: A transmitter connected to the electrical outlet or fixture, and a receiver used to scan the panel to locate the correct breaker. The ac circuit finder tracer has the GFCI security test function and is easy to use
•High Performance: The circuit finder features visual flashing light and an audible beeping to alert you when the correct breaker is identified. The LED indicator panel on the transmitter of breaker finder electric tester can inform the test status and avoid wrong operation
•Sensitivity Adjustable: The receiver will immediately beep as you approach the correct circuit breaker, and you can then adjust to higher sensitivity to find the correct circuit breaker
•Non-contact Voltage and Easy to Operate: NOYAFA NF-827 electrical tester has advanced non-contact voltage (NCV) detection to maximize your safety.Automatic shutdown saves power, flashlight is easy to read in the dark environment, low power indicator reminds charging
•Electrical Tester Case: Circuit tester storage case designed specifically for the NOYAFA NF-827 Circuit Breaker Finder, Outlet Repair Tool Kit, and GFCI Outlet Tester. Made of high-quality EVA material, durable and easy to carry, it can well protect your voltage tester from being damaged by collisions and prevent scratches and dust from affecting the circuit breaker tester
•Additional Accessories: Circuit Breaker Finder Accessory Kit includes a 3-prong to 2-prong grounding adapter for enhanced compatibility. Light socket adapter allows for easy circuit identification in lighting fixtures.Alligator clip adapter enables the tool's use on bare wires, expanding its versatility

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$39.99

$49.99

-20%

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focemta

FOCEMTA Circuit Breaker Finder Kit with GFCI Outlet Tester for 90-135V AC Circuits,includes Light Socket Adapter, 3-2 Prong Grounding Adapter & Clip adapter,Portable Electrical Tool with Carrying Case

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•All-in-One Circuit Diagnosis: Combines Circuit Breaker Finder, Outlet Tester & GFCI Tester – Quickly locate breakers, test outlets (open ground/reverse polarity), and verify GFCI protection in one compact tool. Includes essential accessories: light socket adapter (for lamp circuit testing),3-prong to 2-prong grounding adapter and alligator clip adapter (can be used for bare wire). Perfect for troubleshooting home wiring or commercial systems
•Precise Voltage & Signal Tracking: Dual-function LCD screen displays real-time voltage (90-135V) and signal strength for precise circuit tracing—unlike basic testers, our breaker finder eliminates guesswork by providing exact data while featuring audio/visual alerts, ideal for electricians and DIYers tackling complex panels
•Professional-Grade GFCI Tester with Real-Time Diagnostics & Battery Backup： This advanced outlet tester verifies GFCI protection status while uniquely displaying testing duration on its large screen—a feature standard testers lack. It combines bright red/green LED indicators for instant pass/fail signals with a detailed display that diagnoses 6 common wiring faults (open circuits, reverse polarity, etc.). The built-in battery locks test data for 10 seconds during power loss, ensuring technicians never miss critical readings, while its portable design streamlines inspections in homes, commercial sites, or emergencies
•Durable & Portable with Complete Accessories： Featuring an impact-resistant ABS housing and lightweight design, this digital circuit breaker finder withstands tough job site demands while maintaining a compact, rugged build. The upgraded clip adapter eliminates traditional two-piece construction with an innovative all-in-one metal-plastic fusion design, preventing slippage and ensuring secure electrical contact to avoid short circuits. Perfect for troubleshooting home or commercial electrical systems. Includes a sturdy carrying case for convenient storage and transportation
•Complete Ready-to-Use Kit with Certified Safety： Includes transmitter (IEC61010-1 screw-sealed battery compartment), receiver (non-slip grip), 2x AA & 2x AAA batteries, screwdriver, manual, carrying case, light socket adapter, 3-prong to 2-prong grounding adapter, and alligator clip lead，ETL-certified CAT II 135V rating ensures safe residential/commercial circuit diagnostics right out of the box

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$55.99

$59.99

-7%

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focemta

Focemta Circuit Breaker Finder & GFCI Outlet Tester with Digital LCD Display, 90-135V Electrical Circuit Tracer Tool for Electricians/DIY – Lightweight (Includes Batteries & Carrying Case)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•All-in-One Circuit Diagnosis: Combines Circuit Breaker Finder, Outlet Tester & GFCI Tester – Quickly locate breakers, test outlets, and verify GFCI protection in one compact tool. Perfect for troubleshooting home wiring or commercial systems
•Precision Voltage & Signal Strength Display: Dual-Function LCD Screen – Displays Real-Time Voltage (90-135V) and Signal Strength for precise circuit tracing. Unlike basic testers, our circuit breaker finder tool eliminates guesswork by showing exact data, ideal for electricians and DIYers tackling complex panels
•LED indicator light and large screen: The GFCI Tester has an automatic trip testing function, which is different from general testers. Our tool can accurately display the time taken for tripping. The clear visual feedback of the red/green indicator lights combined with the details displayed on the large screen can accurately diagnose 6 common wiring faults, including open circuit/reverse polarity
•Durable and portable, with high on-site efficiency: This Breaker Finder discoverer features an impact resistant ABS housing and a lightweight design (0.9 pounds) - capable of withstanding the requirements of the work site, compact in shape, sturdy and durable, suitable for repairing and troubleshooting household or commercial circuit faults. Includes a suitcase for easy storage and transportation
•Complete Ready-to-Use Package Includes: 1x Transmitter (IEC61010-1 Screw-Sealed Battery Compartment)，1x Receiver （with anti slip design），2x AA + 2x AAA Batteries，1x Screwdriver，1x Manual，1x Carrying Case，Certified CAT II 135V Safety Rating with ETL Compliance Ensure zone safety in residential/commercial wiring diagnosis

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$45.99

$49.99

-8%

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Fluke

Fluke BK120 SmartTrace Breaker Finder and Socket Tester

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•A 4-in-1 tool that acts as a breaker finder, NCV detector, socket tester, and bright LED flashlight.
•Audible and visual alerts take the guesswork out of locating a circuit breaker.
•Unique dual-sensitivity NCV mode for non-contact voltage detection on terminal strips and supply cords.
•Transmitter has a built-in socket tester with easy-to-see LEDs to verify correct wiring in both standard and GFCI outlets.

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$76.04

$79.99

-5%

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UNI-T

UNI-T AC Circuit Breaker Finder and Tracer Tool Kit with Electrical Integrated GFCI Outlet Tester, AC 90-120V USA Plug + Adjustable Sensitivity Beeper Indicattion+ Flashing LED Light - UT25A

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•⚡【ADJUST SENSITIVITY TO LOWEST SETTING】Befor you test,Please adjust sensitivity of the ac circuit breaker finder to lowest setting.Or it beeps at nearly every breaker!!!At the lowest setting, the receiver will beep immediately when you approach correct breaker, then you can adjust to higher sensitivity to find correct breaker.
•⚡【AC 90-120V CIRCUIT BREAKER FINDER】Identifies circuit breakers on energized 120V electrical systems, breaker detector finder compatible with standard 90 to 120V AC 50/60Hz breaker system.
•⚡【GFCI TESTER】A transmitter connected to the electrical outlet or fixture, and a receiver used to scan the panel to locate the correct breaker. The ac circuit finder tracer has the GFCI security test function and is easy to use.
•⚡【LED STATUS INDICATOR】 The LED indicator panel on the transmitter of breaker finder electric tester can inform the test status and avoid wrong operation.
•⚡【HOW TO USE】 First of all, insert the transmitter into the socket you are looking for, before look at the right switch, please minimize the sensitivity, and slowly move the receiver near the breaker box. When the receiver emits the sound of Di Di Di and the indicator light is flashing, it means that you have found the corresponding control switch, and then slowly increase the sensitivity to confirm, it will make a more obvious alarm sound.
•⚡【EVA TOOL CASE】In order to make you better protect and store the circuit breaker tracer finder, our product is specially attached with a thickened anti-fall EVA box with a drawstring, which is easy to carry.
•⚡【WHAT YOU WILL GET】1x Circuit Breaker Finder (Receiver),1x Socket Tester (Transmitter),1x User Manual,1x EVA Tool case.

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$29.99

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Xin Tester

Xin Tester Digital AC Circuit Breaker Finder Tool with Integrated GFCI Outlet Tester, 90-120V NCV Electrical Circuit Tracer Automatically Scan Voltage Detector Electrician Tool XT-33A

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•PROFESSIONAL EFFICIENT CIRCUIT BREAKER TESTER - Automatically identify live devices and detect disconnected locations of AC 90-120V 50/60Hz electric wires, sockets, etc. at home, in house, office, industry for professional electricians, DIYers and beginners.
•ACCURATE & FAST IDENTIFYING BY 2 AUTOMATICALLY SCANINGS - Automatically start scanning after powered ON. First scan of the AC circuit breaker finder tool for quickly identifying the circuit breaker. Second scan with sensitivity adjustment to accurately locate pinpoints circuit breaker controller.
•ADJUSTABLE SENSITIVITY - Designed with the adjustable sensitivity, the electrical circuit tracer is great for use in complex environments or lines with irregular routing. If you cannot be sure the correct circuit breaker controller, you can try to press the signal strength key to switch from lower sensitivities to higher ones and test repeatedly to accurately locate the target.
•NCV SAFE MODE & FLASHLIGHT - Non-contact mode help to detect electric wires quickly while SCAN help to detect switches. Buit-in high brightness flashlight in the front help you to see the cables, wires clearly in the dim or dark environment.
•BUILT-IN GFCI TESTER - Designed with a built-in GFCI outlet tester to inspect wiring conditions and test GFCI devices for extra safety. 2 Green and 1 red lights ON will show the transmitter in progress. The indicators on the receptacle tester will show the circuit conditions.
•WHAT YOU GET - Comes with circuit breaker finder transmitter and receiver set, 9V battery, durable and anti-fall EVA carrying case, user manual. ▲▲Note▲▲: For more details about HOW TO USE, please refer to the last page of the manual. Any technical issues about our products and service, please feel free to tell us.We will try our best to help you with it.

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$25.99

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