Best AC Current Circuit Testers of 2025

Name: Autel PowerScan PS100 Power Circuit Probe Tester Kit, 12V 24V Electrical Circuit System Diagnostic Tool, Automotive Circuit Tester, Read AC/DC Current Resistance
Brand: Autel

Jennifer Fraser

Last Updated: 31 Jan 2025

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

AC current circuit testers are devices used for testing the presence and strength of electrical current in circuits. These testers come in various forms, including handheld devices and clamp meters. They are commonly used by electricians and DIY enthusiasts to diagnose electrical faults, test circuits, and ensure electrical safety. AC current circuit testers are easy to use and provide accurate readings, making them an essential tool for anyone working with electrical systems.

At a Glance: Our Top Picks

#TOP 1

Autel PowerScan PS100 Power Circuit Probe Tester Kit, 12V 24V Electrical Circuit System Diagnostic Tool, Automotive Circuit Tester, Read AC/DC Current Resistance

9.8

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Autel PowerScan PS100 Power Circuit Probe Tester Kit, 12V 24V Electrical Circuit System Diagnostic Tool, Automotive Circuit Tester, Read AC/DC Current Resistance

#TOP1

9.8

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#TOP 2

KAIWEETS Smart Circuit Tester with Backlight

9.7

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KAIWEETS Smart Circuit Tester with Backlight

#TOP2

9.7

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#TOP 3

Kewtech KEWCHECK103 Mains Wiring Socket Tester

9.5

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Kewtech KEWCHECK103 Mains Wiring Socket Tester

#TOP3

9.5

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Top 10 AC Current Circuit Testers

#TOP 1

Autel PowerScan PS100 Power Circuit Probe Tester Kit, 12V 24V Electrical Circuit System Diagnostic Tool, Automotive Circuit Tester, Read AC/DC Current Resistance

Autel

autel ps100

3inch

Autel PowerScan PS100 Power Circuit Probe Tester Kit, 12V 24V Electrical Circuit System Diagnostic Tool, Automotive Circuit Tester, Read AC/DC Current Resistance, Built-in Circuit Breaker, 20ft Cord

9.8

FTB Score

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Features

[Compnent Activation Function] Autel PS100 Power Circuit Tester Tool Will Test The Positive, Negative, And Open Circuit Easliy, Also Testing For Continuity, Diagnosing Circuit Failures, Checking Good And Bad Grounds, Easy To Read AC/DC Current Activating Components On And Off The Vehicle, Sensing MIN /MAX Voltage, Etc.By Generating Activation Signals For The Components, You Can Judge Whether The Components Are In Good Condition, Such As Lights, Motors, Wipers, Radiator Fans, Relays, Etc.

[2024 New PowerScan PS100 Automotive Circuit Tester] Autel PowerScan PS100 Power Circuit Probe Tester It Is A Fast&complete Diagnostic Solution For All 6 To 30 Volt Vehicle Electrical Systems. Supports AVOmeter, Short Circuit Detection, Relay/Component Tester, Continuity Tester And Bad Ground Indicator, Is Truly A Powerful Yet Affordable Line Inspection Product. PS100 Automotive Circuit Tester Is A Must-Have Tool For Electrical System Diagnostic Technicians.

[Versatile To Perform Multiple Functions] Autel PS100 Circuit Tester Is An Electrical System Tester That Can Help You Troubleshoot Electrical System Issues, Including Voltage And Polarity Testing, Continuity Testing, Signal Circuit Testing, Component Activation, Trailer Light Testing, And Short Circuit Location. Technicians Can Check For Fuse Failures, Component Failures, Aging Or Degradation, Circuit Failures Without Changing Plugs, Making Diagnostic Work Efficient.

[Durable And Safety] Autel PS100 Circuit Probe Kit Has Short-Circuit Protected As Well As A Safety Measure To Protect The Device From Overload.Autel PS100 Instantly Checks Component Continuity And Identifies Positive, Negative And Open Circuits. When The Positive Terminal Is Connected, The Red LED Light Is On, Accompanied By A Beep. When The Negative Terminal Is Connected, The Green LED Lights Up, Along With Low Pitched Tone. If It Is An Open Circuit, The LED Light Will Not Light.

[4 Modes Easy-To-Operate Diagnostic] The Circuit Probe Kit's 4 Modes Can Be Accessed By Simply Depressing The Mode Button. DC Voltage: Read The DC Voltage With A Resolution Of 0.1 Volts. AC Voltage: Read The Max. Voltage, The Min. Voltage, Frequency, And Duty Cycle. Resistance: Read The Resistance Between The Tip And Auxiliary Ground Lead. Tone On/Off: Technicians Use The Tone In A Dark Environment To Distinguish The Test Results And Turn It Off When Unnecessary.

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#TOP 2

KAIWEETS Smart Circuit Tester with Backlight

KAIWEETS

VT501

Black301

SD399

KAIWEETS Smart Circuit Tester, 0.8V-100V DC Voltage Tester with Backlight, Digital Test Light with Flashlight Measures Polarity Continuity, Automotive Fuse Tester for Car Battery

9.7

FTB Score

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The KAIWEETS Circuit Tester is an innovative tool that simplifies your electrical testing tasks. With its SMART mode, you can effortlessly measure AC/DC voltage, polarity, resistance, and continuity without any manual adjustments. The tester supports a wide voltage range from 0.8V to 100V, making it ideal for various automotive circuits. Its user-friendly design includes a long, durable wire and a large alligator clip for easy one-handed operation. Additionally, the clear green LED display ensures you can read measurements accurately in any lighting condition.

What We Like

Automatic measurement detection

Wide voltage testing range

User-friendly design

Bright LED display

Durable construction

#TOP 3

Kewtech KEWCHECK103 Mains Wiring Socket Tester

Kewtech

KEWCHECK103

Grey

No Size

Kewtech KEWCHECK103 Mains Wiring Socket Tester

9.5

FTB Score

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Features

DUAL RESPONSE: The LED Lights Integrated Into This Socket Tester Will Then Light Up In A Certain Way Depending On What's Detected, And The Product Will Either Emit A Continuous, Warbling Or No Tone Depending On What's Detected

SIMPLE TO USE: The Kewcheck 103 Socket Tester Allows You To Easily Check If Live, Neutral And Earth Wires Are Wired Correctly On Any UK Plug Socket. Simply Plugs Into The Socket For Results In Seconds

QUICK AND EASY: Designed To Easily Give Quick And Clear Indication Of The Status Of A Socket's Internal Wiring Without The Need To Remove The Socket Panel From The Wall.

BUY WITH CONFIDENCE: The Kewtech Brand Has Become Synonymous With High Quality, As We Manufacture Innovative, Accurate And Reliable Test Equipment Specifically For The UK Market.

14 WIRING CONDITIONS: All Of The Possible Indications Are Displayed On The Front Of The Kewcheck103 To Help With Easily Understanding The Test Results For Each Socket

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#TOP 4

Circuit Tester for Automotive Wiring Check

Zoe & Jim

6807

Circuit Tester for Automotive Wiring Check Cover

Circuit Tester, 3-70v Dc Voltage Tester with Digital Test Light Flashlight Measures Polarity Continuity, for Automotive Fuse Tester Wiring Circuit Checking

9.5

FTB Score

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The Zoe & Jim Circuit Tester is designed to identify low-voltage circuit faults in vehicles ranging from 3-70 volts. It allows you to quickly check for issues in headlights, taillights, and turn signal circuits, making it an essential tool for automotive maintenance. The bidirectional voltage test feature simplifies connections to both positive and negative grounds, while the durable design with stretchable cables ensures easy access to hard-to-reach areas. With a clear LED indication for polarity, you can work confidently and efficiently.

What We Like

Easy to use

Durable and flexible design

Effective for various circuits

Clear polarity indication

#TOP 5

Keenso Circuit Tester, 6V/24V Car Fuse Tester Test Light Electrical Tester Screwdriver Fuse Tester Electric Current Tester Screwdriver Auto Test Light Mechanic Tool

Keenso

Keenso121101

Transparent

Keenso Circuit Tester, 6V/24V Car Fuse Tester Test Light Electrical Tester Screwdriver Fuse Tester Electric Current Tester Screwdriver Auto Test Light Mechanic Tool

9.5

FTB Score

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Features

Tester Light Blub --- The Light In Handle Glows When Circuit Connection Is Complete, And The 3 Watt Bulb Is Replaceable, You Can Change The Bulb Easily, Which Is Long-Lasting For Your Electrical Circuit Tester Test Light 6V.

Wide Circuits Tester --- This 12V Electrical Circuit Tester Test Light Is Ideal For Checking Circuits, Fuses, Switches And Wiring On Automobiles, Trailers, Boats, Motorcycles And Other Low Voltage Systems. Power Probe Length: 8.3cm / 3.3inch; Pen Length: 17.3cm / 6.8inch.

Premium Quality --- The Handle Of The Electric Tester Screwdriver Is Made Of High Quality AS Plastic And The Hardened & Tempered Carbon Steel Probe Is Chrome Plated, Making The Sharp Steel Probe Can Easily Pierce Wire Insulation To Check Circuitry.

Long Spring Wire --- The Long Spring Wire Of 12v Tester Can Stretch To About 1 Meters, And The Wire Is Thicked So That The Wire Will Not Burn When The Part Temperature Is Increased. Bulb: 3 Watt Bulb; Line Length: 96cm / 37.8inch.

6V-24V Test Range --- The Car Electrical Tester Is Designed To Check Car 6V - 24V Electrical Circuits. Its Lightweight Design Can Provide Super Convenience With You, So You Can Carry It Wherever You Go.

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#TOP 6

Smart Socket Tester ZOYI ZT-E10, RCD Trip Tester

ZOYI

ZT-E10

Black

Smart Socket Tester ZOYI ZT-E10, RCD Trip Tester, Digital LED Color Display Leakage Mains Wiring Tester, AC Tester Plug, Wire Indication Household Safety Inspections, NCV (Battery Included)

9.5

FTB Score

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Features

[RCD FUNCTION] : Digital Socket Tester Simulating Ground Fault Conditions, Which Works On RCD Outlets And Confirms Operation Of The Ground Fault Protective Device. It Tests Standard Outlets That Are Wired In Parallel To RCD Outlets (multiple Outlets In Kitchen Or Bath, And Outdoor Receptacles Require RCD Protection). Be Careful Of Using This Function On Normal Receptacles. It May Cause House Wiring Trip.

[TESTING CAPABILITY] : This UK Plug Tester Detects The Most Common Wiring Faults In Standard And RCD Electrical Outlets, Which Is Also With The Standard Uk And RCD Protected 250 Volt AC Outlets. Capable Of Detecting The Open Wiring Fault With Open Ground, Open Hot, Open Neutral, Reverse Polarity, Hot/neutral Reversed Wires.

[SAFETY FIRST] : Tester Plug Conforms To CAT III 300V And CE-Marking, 7/24 Lifetime Technical Support. Please Feel Free To Contact Us If You Have Any Concerns.

[Non-Contact Voltage Detection (NCV)] : The NCV Function Provides A Non-Contact Method For Detecting Nearby Alternating Current Voltage. When Alternating Current Voltage Is Detected, The Intensity Indicator Flashes At Full Scale, Accompanied By An Audible Alert, Enhancing Safety During Testing.

[INSTANT WIRING IDENTIFICATION] : Plug Smart Socket Tester The Red LED Indicators Can Be Light Up Clearly For Easy Visual Indication, When Activated Identify One Of The Seven Common Wiring Options. An Easy To Understand Chart On The Tester Helps Determine Wiring Condition In Outlet, Based On LED Lights Results.

[High-Definition VA Color Display] : Our Plug Socket Tester Features A High-Definition VA Color Display, Ensuring Clear Visibility Even In Low-Light Conditions, So You Can Perform Tests Confidently In The Dark.

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#TOP 7

Aicevoos D9C Socket Tester UK

Aicevoos

Aicevoos D9C Socket Tester UK, RCD Plug Tester Receptacle Detector with LCD Display, 3 Prong AC Circuit Analyzer Includes 6 Types of Fault Diagnosis

9.5

FTB Score

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Features

INSTANT INSPECTION: Just Plug The Circuit Tester Into A Standard UK Outlet, And The Clear LCD Indication Instantly Shows The Accurate Wiring Status, You Can Understand The Results Without Looking At The Graph.

PROFESSIONAL OUTLET TESTING: This Outlet Tester Is Not Only Designed For Power Outlet Wiring Testing, But Also For RCD Testing And Leakage Voltage & Current Measurement, Which Can Quickly And Accurately Detect The Most Common Wiring Conditions And Problems.

WIRING DETECTION: Small And Lightweight Socket-Type Tester Detects Open Ground, Open Neutral, Open Live, Double Open (neutral And Ground), Reverse Live/ground And Reverse Live/neutral Wiring Faults.

WHAT YOU WILL GET: 1 Piece Advanced RCD Power Outlet Tester; 1 User Manual; Any Questions, Please Feel Free To Contact Us.

RCD TEST FUNCTION: Press The White "RCD" Detection Button, The Leakage Protection Switch Will Trip And Power Off In Time (the Air Switch Is Not Controlled). If The Leakage Protection Switch Does Not Trip, Please Contact A Professional For Maintenance In Time.

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#TOP 8

Draper 36583 Heavy Duty Auto Circuit Tester

Draper

36583

Blue

Draper 36583 Auto circuit Tester H/Duty á

9.4

FTB Score

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The Draper 36583 Circuit Tester is designed for efficient testing of DC circuits in vehicles, operating within a voltage range of 6-24V. With 1.5M of heavy-duty cable and an earth clip, you can easily connect and test circuits with confidence. The insulated contact point helps prevent accidental shorting, ensuring safe usage while you work. This tool is specifically tailored for automotive applications, providing you with the convenience of reliable circuit diagnostics without the worry of testing unsuitable mains supply AC circuits.

What We Like

Heavy-duty cable for durability

Insulated contact point for safety

Suitable for vehicle DC circuits

Easy to connect with crocodile clip

#TOP 9

Vegena Power Circuit Probe Kit

Vegena

BY-BG-ceshiyi413

Vegena Power Circuit Probe Kit, 3.5-36V Circuit Tester, Em285 Automotive Circuit Tester, Voltage Tester Car Electrical Tester Test Light Electrical System Diagnostics Tool With Led Indicator(Blue)

9.2

FTB Score

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Features

[LONG TEST LEAD] The Cable Length Is Approximately 4.5m, Allowing You To Easily Test Any Electrical System. Equipped With A Flashlight Function, Allowing You To Operate Normally Even In The Dark Night.

[COMPREHENSIVE 3.5 - 36V DC TEST KIT] LED Indicators And Buzzer Warning Help You Troubleshoot Problems At A Glance, Power Circuit Probe Kit Do Not Use With AC Voltage.

[SHORT-CIRCUIT PROTECTION] The Unit Has A Short-Circuit Protection Function, Which Can Detect Poor Grounding Contact Immediately.

[POWER CIRCUIT PROBE KIT WIDE RANGE OF APPLICATIONS] Power Circuit Probe Kit Can Be Used To Test Continuity, Test Voltage Polarity, Check Lights, Check Motors, Track And Locate Short Circuits, Test For Poor Grounding Contacts, And More.

[POWER CIRCUIT PROBE KIT EASY TO OPERATE] After Simply Connecting The Unit To The Vehicle's Battery, The Auto Technician Can Conduct The Positive And Negative Current From The Battery To The Tip By Flipping The Power Switch Forward Or Backward.

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#TOP 10

VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool

VDIAGTOOL

V200 PRO

Blue

VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC DC Voltage Trailer Relay Fuse Test

9.2

FTB Score

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Features

[COMPREHENSIVE POWER CIRCUIT TESTER] Switch To Mode I, You've Just Activated Power Circuit Probe Tester Which Supports 4 Working Modes:AC/DC Voltage, Resistance And Diode. The Electrical Probe Tester Allows Users To Check 12V 24V Electrical System Instantly, Tells You Whether The Wire Or Circuit Is Live, And Which Side Of The Circuit You Are On, Positive Or Negative. NOTE: This Circuit Tester Can Be Powered By Either Connecting To Cigarette Lighter/vehicle's Battery,no External Battery Needed!

[ALL-IN-ONE TOOL FOR ANY CIRCUIT PROBLEM DIAGNOSIS] V200 Pro Covers All Circuit Tests: Circuit Breaker/Open Test Tracing Wire AC/DC Voltage Test Diode Test Resistance Test Polarity Test Continuity Test Ground Test Activate Components Signal Circuit Test Relay, Fuse, Trailer Light Test. You Can Quickly & Easily Locate Short Circuits, Open Connections, Broken Wires, Current Leaks And Even Trace Wires. Get This Essential Circuit Tester Today And Save Your Time And Costly Trip To A Dealership!

[One-Step Solution For Auto Electrical System Test] V200 Pro Meets The Needs Of 2 Products At One Time. Simply And Quickly Switch From The Power Circuit Probe Tester Functional Mode To The Circuit Breaker Finder Tool Mode With One Click. There Is No Need To Get An Extra Tool To Judge Continuity Of The Cables/wire And Diagnose The Breaker Point. This Convenient And Efficient Circuit Instrument Is A Great Choice For DIYERS,electrician And Technician.

[OVERLOAD PROTECTION TO PROTECT CAR ELECTRONICS] This Automotive Electrical Tool Comes With Short Circuit Protection. Whenever It Gets Overloaded, It Just Gonna Shut Down And Restart, Which Is A Safe Measure To Protect The Device And Car Electronics. Useful Tip: You Can Also Use Overload Protection Feature To Test Short Circuit Conveniently. NOTE: If You Received Defective Unit Or It Malfunctions, Please Reach Us Via Vdiagtool2 @ Outl Ook C Om For Hassle-Free Replacement Any Time!

[LOCATING BREAKER POINT EFFICIENTLY] Switch The V200 Pro All-In-One Circuit Tester Kit To Mode II, You Will Be Able To Use The Breaker Finder Which Can Easily Locate The Circuit Breaker Point, Open Connections, Broken Wires, Current Leaks With Tone Change, Even Trace Wire/cable Without Damaging The Insulation. This Circuit Breaker Finder Tool Works On All Kinds Of Vehicle Circuit Issues Such As Those Found In Car, SUV, Mini Van, Truck, Tractor, Boat & RV, With Voltages Between 6 And 42 Volt DC.

[COMPONENT ACTIVATION & SENSOR/SIGNAL CIRCUIT TEST] VDIAGTOOL V200 Pro Power Circuit Probe Kit Can Generate Activation Signals To Electrical Components Like Car Lights, Motors, Windshield Wipers, Radiator Fans, Relay, Fuel Injector And Etc To Troubleshoot Electrical Problems; Locate Auto Short Circuits If You Keep Getting Blown Fuses And Also Test Various Sensors, Signal Circuits To Pinpoint The Root Cause To Electrical Issues When You Have Extracted DTCs From Vehicle ECUs.

[APPROVAL BY P.P. 10-YEAR OFFICIAL TECHNICAL ENGINEER , 3-YEAR WARRANTY] Countless Auto Electrical Specialists Recommend VDIAGTOOL Power Circuit Tester, And Even Including P.P. Official Technical Engineers. It Accomplishes Everything That P.P.3/ P.P.4 Does For Half The Price! We Offer 3-Year Warranty, Lifetime Technical Support, 60 Days No-Question-Asked NEW REPLACEMENT OR REFUND.

[20FT EXTENSION CORD TO WORK ANYWHERE AROUND THE VEHICLE] V200 Pro Circuit Tester Automotive Tool Comes With 20 Feet Long Cord Plus 20 Feet Extension Cord. Combining The Feature That It Can Be Powered By The Cigarette Lighter, And Alligator Clip For Convenient Ground Connection, You Can Test Electrical Circuit System Anywhere Around The Vehicle. No More Worrying About Short Cord While Testing Electrical System! NOTE: Mode II-Circuit Breaker Tester Is Powered By 1pcs 9V Battery!

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Frequently Asked Questions (FAQs)

1. How does an AC circuit tester work?

A built-in sensor at the tip of the tester detects the presence of voltage when touching a conductor, outlet, or supply cord. By holding the tool, you are the ground reference through capacitive coupling. When the tip glows red and the unit beeps, you know voltage is present.

2. What is AC tester?

Various electrical testers can be used to check voltage levels in both AC and DC circuits, to test for amperage, continuity, short circuits and open circuits, polarity, and more.

3. What testers do electricians use?

Multimeters. An essential part of any electrician's equipment, the multimeter is the best tool for quick and easy measurements of basic electrical parameters.

Editor's Notes

During our ac current circuit tester research, we found 45 ac current circuit tester products and shortlisted 10 quality products. We collected and analyzed 19,426 customer reviews through our big data system to write the ac current circuit testers list. We found that most customers choose ac current circuit testers with an average price of £17.54.

The ac current circuit testers are available for purchase. We have researched hundreds of brands and picked the top brands of ac current circuit testers, including Autel, KAIWEETS, Kewtech, Zoe & Jim, Keenso. The seller of top 1 product has received honest feedback from 139 consumers with an average rating of 4.9.

Written by

Jennifer Fraser

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.