Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester : �鶹��.ca: Tools & Home Improvement

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Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester

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Brand	Klein Tools
Power source	Corded Electric
Style	Circuit Breaker Finder
Colour	Circuit Breaker Finder
Item weight	7.2 Ounces
Item dimensions L x W x H	27.8 x 5.5 x 3.5 Centimetres
Min. Operating voltage	90 Volts
Measurement type	Voltmeter
Maximum operating voltage	120 Volts
UPC	092644692406

About this item

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
GFCI 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
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

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Product information

Technical Details

Manufacturer	‎Klein Tools
Place of Business	‎HAUPPAUGE, NY, 11788 US
Part Number	‎ET310
Product Dimensions	‎27.84 x 5.49 x 3.53 cm; 204.12 g
Batteries	‎1 9V batteries required. (included)
Item model number	‎ET310
Size	‎One Size
Colour	‎Circuit Breaker Finder
Style	‎Circuit Breaker Finder
Finish	‎Brushed
Material	‎Blend
Pattern	‎Breaker Kit
Shape	‎Rectangular
Power Source	‎Corded Electric
Voltage	‎120 Volts
Item Package Quantity	‎1
Measurement Accuracy	‎Electrical Tester, not a measuring tool
Special Features	‎Transmitter docks in Receiver Transmitter integrated GFCI outlet tester in receiver
Usage	‎Electrical Work
Included Components	‎Digital Circuit Breaker Finder with GFCI Outlet Tester
Batteries Included?	‎Yes
Batteries Required?	‎No
Battery Cell Type	‎Alkaline
Warranty Description	‎See Manufacturer Website
Item Weight	‎204 g

Additional Information

ASIN	B07QNMCVWP
Customer Reviews	22,160 ratings 4.6 out of 5 stars
�鶹�� Rank	#15,859 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #23 in Circuit Testers
Date First Available	April 17 2019

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Product description

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. 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.

From the manufacturer

60622 Knee Pad Compression Sleeve, Knee Support for Construction

About Klein Tools

As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.

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.

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

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
GFCI 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
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)

FEATURES

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

	Circuit Breaker Finder Accessory Kit	Accessories, 2-Piece Set, Includes Cat. No. ET310	Circuit Breaker Finder Replacement Transmitter	Voltage Tester, Non-Contact Low Voltage Tester Pen	Outlet Tester with LCD Display	Multimeter, Slim Digital Meter, Auto-Ranging
	Buying Options			Buying Options	Buying Options
Customer Reviews	6,996	8,691	162	6,309	10,006	205
Mfg. No.	69411	80016	ET310TRANS	NCVT1P	RT250	MM450
Description	Circuit Breaker Finder Accessory Kit	Accessories, 2-Piece Set, Includes Cat. No. ET310	Circuit Breaker Finder Replacement Transmitter	Voltage Tester, Non-Contact Low Voltage Tester Pen	Outlet Tester with LCD Display	Multimeter, Slim Digital Meter, Auto-Ranging

	Large LCD, Identifies Wiring Faults	Auto-Ranging Digital Multi-Tester, AC/DC, Resistance	Megohmmeter Insulation Tester, 4000 Ohms Resistance	Digital Manual-Ranging 600V AC/DC Voltage Tester	Non-Contact Voltage Tester with Outlet Tester	Receptacle Tester, AC/DC Voltage Tester
				Buying Options	Buying Options
Customer Reviews	162	149	1,252	1,758	3,468	55
Mfg. No.	RT390	ET270	ET600	MM325	NCVT2PKIT	ET40VP
Description	Large LCD, Identifies Wiring Faults	Auto-Ranging Digital Multi-Tester, AC/DC, Resistance	Megohmmeter Insulation Tester, 4000 Ohms Resistance	Digital Manual-Ranging 600V AC/DC Voltage Tester	Non-Contact Voltage Tester with Outlet Tester	Receptacle Tester, AC/DC Voltage Tester

Safety and product resources

Safety documents

User Manual (PDF)

Top Brand: KLEIN TOOLS

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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.

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	This Item Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester	Recommendations NOYAFA NF-827 AC Circuit Breaker Finder, New Upgraded Quickly Identify 90-120V NCV Circuit Breaker Finder Tool Kit with Integrated GFCI Outlet Tester, Electric Tester with Storage Case, Flashlight	? Circuit Breaker Finder with Integrated Outlet Tester, Adjustable Socket Tester Diagnostic-Tool	? Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411	? Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit for Energized and Non-Energized Breakers, Fuses, and Wires	? Klein Tools ET310TRANS ET310 Circuit Breaker Finder Replacement Transmitter, Digital Circuit Breaker Finder, Integrated GFCI Outlet Tester
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Price	Currently unavailable.	-10%?$62.99 Was:?$69.99	-8%?$45.92 Was:?$49.65	$88.81	-20%?$329.95 Was:?$411.36	-14%?$28.00 Was:?$32.66
Delivery	��	Get it by Wednesday, Jul 9	Get it by Wednesday, Jul 9	Get it by Wednesday, Jul 9	Get it by Wednesday, Jul 16	Get it by Wednesday, Jul 9
Customer ratings	4.622,160	4.066	3.916	4.68,691	4.61,172	4.8162
Sold by	��	JMSKJ	Qmee	�鶹��.ca	�鶹��.ca	ABR Supply Co.
power source	Corded Electric	Battery Powered	Corded Electric	Corded Electric	Battery Powered	Battery Powered
min. operate voltage	90 volts	90 volts of alternating current	110 volts	90 volts	12 volts	��
style	Circuit Breaker Finder	��	Adjustable	Circuit Breaker Finder Kit	Tracer Kit	Industrial

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Customer reviews

22,160 global ratings

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Customers say

Customers like the functionality, ease of use, and time-saving of the electric circuit testing device. They mention it works great, is easy to understand, and makes finding the right circuit easy. Customers also appreciate the labeling. However, some customers disagree on the accuracy, circuit break detection, and circuit compatibility.

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Functionality Ease of use Time-saving Labeling Accuracy Circuit break detection Circuit compatibility

270 customers mention "Functionality"235 positive35 negative

Customers like the functionality of the electric circuit testing device. They mention it works great, is a useful tool for electricians, and works on fuses and circuit breakers. Some say it's a great buy and is used on a daily basis.

"amazing product, almost magical. need to read the instruction or at least watch a video on it" Read more

"This breaker finder works great. Everyone from contractors to home users need this." Read more

"...Works well when you figure out how to use it. But at first you think its garbage. #..." Read more

"Works great" Read more

97 customers mention "Ease of use"91 positive6 negative

Customers like the ease of use of the electric circuit testing device. They mention it's plug and play, saves them a ton of hassle, and made finding the right circuit easy. Customers also say it's easy to understand and work. They also say it works fine and is safe.

"...Circuit Breaker Finder is absolutely the best I used so far, no messing around, plug it in the socket and go to your breaker box and bam, got the..." Read more

"Easy to use" Read more

"Great product easy to use" Read more

"Finding the right fuse or circuit breaker is often hard. This tool makes it very easy. Can do it alone and works on fuses and circuit breaker" Read more

23 customers mention "Time-saving"23 positive0 negative

Customers find the electric circuit testing device time-saving. They mention it's easy to use, accurate, and fast. Customers also say it makes electrical trouble-shooting faster and labelling breaker panels far easier and quicker.

"It saves time and works great. Love this tester." Read more

"...This is a lot easier and faster. And I don��t have to accidentally turn off random devices in my house!" Read more

"...This was far quicker to use than running up and down two flights of stairs while flicking one breaker at a time and guessing which one is right...." Read more

"Makes electrical trouble-shooting way faster. Makes labelling breaker panels far easier and quicker." Read more

9 customers mention "Labeling"9 positive0 negative

Customers like the labeling feature of the product. They mention it makes labeling circuits easy, facilitates the identification of breakers, and gives a quick, easy-to-read indication of the connection status. Customers also say it's a fast way to list which lights or plugs are on which plug they are going to work on.

"...and stows neatly on the base of the receiver unit and gives a quick easy to read indication of the connection status of the receptacle...." Read more

"Purchased this product to allow me to label our breaker panel correctly. Perfectly detected all my receptacles and matched them to the breaker...." Read more

"...This tool helped to Identify the receptacles." Read more

74 customers mention "Accuracy"39 positive35 negative

Customers have mixed opinions about the accuracy of the electric circuit testing device. Some mention it's very good at pinpointing a breaker connected to an outlet, making identifying the correct breaker very easy. Others say it gives multiple false positive results and is a reliable tool for locating circuit breakers.

"Love this tool. Saves time finding the correct breaker." Read more

"...people using this device are not using it correctly, leading to inaccurate results...." Read more

"I've tested this unit a few times and sometimes it's very good at pinpointing a breaker connected to an outlet, and sometimes it's just mediocre..." Read more

"...connected in that particular socket, however something interfered with normal detection; I flipped that breaker and the identification was correct;..." Read more

25 customers mention "Circuit break detection"15 positive10 negative

Customers have mixed opinions about the circuit break detection of the product. Some mention it does a good job finding breakers and is easy to find the corresponding breaker. However, others say it always goes to the wrong breaker or multiple breakers in the panel.

"...useful professional tool for electricians,and it is easy to find the corresponding breaker." Read more

"...it to work, resetting between attempts, but this unit positively identified the wrong breaker on a couple of occasions...." Read more

"Great buy. I was able to identify all breakers I also identified a badly wired outlet" Read more

"...Works fine for most circuits but gets confused on and around the double circut breakers." Read more

20 customers mention "Circuit compatibility"13 positive7 negative

Customers have mixed opinions about the circuit compatibility of the electric circuit testing device. Some mention it's perfect for finding the right outlet associated with the right breaker, while others say it struggles to locate all circuits with multiple panels. Customers also say it's very useful to locate the proper electrical wire for a particular circuit. However, some customers have reported that it shows several circuits on the same breaker.

"...It also very useful to locate the proper electrical wire for a particular circuit...." Read more

"...Built in 1976 and a couple additions. The wiring in the house is messy. I am mapping and redoing the house...." Read more

"Test polarity, GFI TEST, identification for panel circuits, good tool!" Read more

"...And it��s still a great tool for testing the plugs for correct wiring or GFCI operation." Read more

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Top reviews from Canada

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che
good
Reviewed in Canada on May 7, 2025
Verified Purchase

amazing product, almost magical. need to read the instruction or at least watch a video on it

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Helpful

Guy L.
Circuit breaker finder
Reviewed in Canada on March 19, 2025
Verified Purchase
This breaker finder works great. Everyone from contractors to home users need this.

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Helpful

�鶹�� Customer
Recommend to buy
Reviewed in Canada on May 29, 2025
Verified Purchase
Perfect to get around the house

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Client Satisfait
Ok
Reviewed in Canada on March 27, 2025
Verified Purchase
Ok

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Steeve bolduc
Excellent
Reviewed in Canada on March 25, 2025
Verified Purchase
Excellent

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Stephan Bertrand
Works fantastic, highly recommend
Reviewed in Canada on October 1, 2024
Verified Purchase
I have tried others to ID the breakers to specific outlets, most of the ones that I tried worked ok and were somewhat accurate. This Circuit Breaker Finder is absolutely the best I used so far, no messing around, plug it in the socket and go to your breaker box and bam, got the breaker instantly. I highly recommend this Circuit Breaker Finder.

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One person found this helpful

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Martin A. Lane
Very good tool
Reviewed in Canada on February 3, 2025
Verified Purchase
One of the best testers for your tool pouch.

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One person found this helpful

Helpful

�鶹�� Customer
Makes life easier
Reviewed in Canada on January 22, 2025
Verified Purchase
Love this tool. Saves time finding the correct breaker.

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Top reviews from other countries

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Philipvalefak
Exelente
Reviewed in Mexico on November 22, 2024
Verified Purchase

Es un buen producto que cumple las funciones escritas, el material se ve que es duradero y hasta el momento me a funcionado bien. Gracias

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Seahawks4life
Every home owner needs this to determine which outlet goes to which breaker
Reviewed in the United States on June 15, 2025
Verified Purchase
I've used this for about 6 months on and off while remodeling a home. It works great for detecting which outlet goes to which breaker. I like how it gives information about whether the outlet was wired correctly and whether it has proper ground or not. This is definitely needed to go along with a multimeter. If only I had found out about this sooner. With this, I found that the outlet wiring were reverse. The black hot wire goes on the shiny gold screw and the white neutral wire goes to the regular dull color screw on the side of the outlet.

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Bernd Nurnberger
Scans wires better than breakers.
Reviewed in Japan on December 19, 2020
Verified Purchase
Curious from the negative reviews, I thought as an electrical engineer, I would get it to work. Well, scanning the breaker board on second pass, it showed the wrong breaker. The microwave which is the only device on that circuit. The tester was plugged in another outlet. So I switched the breaker off, it still showed that breaker. Reset the scanner, learned the board all over, same wrong circuit. Or rather the middle of the breaker board. Then I read in the manual to unplug all devices from the circuit being tested. If I need to do that, this tester saves no time.
Fortunately, some reviewers shared how they got it to work. Remove the breaker board cover and scan the wires. Bingo! Found the circuit the gas boiler is on. Without the need to unplug and reset the clocks in each room controller. 4 stars after all.

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Salar
It's very good in some cases, plus not very accurate in some cases too
Reviewed in the United Kingdom on October 26, 2023
Verified Purchase
So, if your electrical panel or sub-panel is organized and very clear to see what's going on in the panel, you can easily find the MCB you are looking for, but in case the panel is too old and a bit messy. Like one of my client's panel, it can be so hard to find the correct MCB, but overall it is a useful product, and thanks to this technology and their team ^^

Read more
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2,000�Ҵ��΁��ʡ�
Reviewed in Japan on January 7, 2021
Verified Purchase
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Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester

About this item

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Technical Details

Additional Information

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Product description

From the manufacturer

About Klein Tools

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

FEATURES

Safety and product resources

Safety documents

Top Brand: KLEIN TOOLS

Important information

Safety Information

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Top reviews from Canada

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Top reviews from other countries

5.0 out of 5 stars Exelente

5.0 out of 5 stars Every home owner needs this to determine which outlet goes to which breaker

4.0 out of 5 stars Scans wires better than breakers.

4.0 out of 5 stars It's very good in some cases, plus not very accurate in some cases too

3.0 out of 5 stars 2,000�Ҵ��΁������ʡ�

Exelente

Every home owner needs this to determine which outlet goes to which breaker

Scans wires better than breakers.

It's very good in some cases, plus not very accurate in some cases too

2,000�Ҵ��΁��ʡ�