The Best Mastech Clamp Meter of 2025 – Reviews & Buying Guide
After hours researching and comparing all models on the market, we find out the Best Mastech Clamp Meter of 2025. Check our ranking below.
2,308 Reviews Scanned
Rank No. #2
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Blue
- Important Tips - This CM2K0R clamp meter can not test DC Current. To measure the AC Current you need to clamp the meter around one of the wires and not the whole power cord. Ensure the conductor to betested is in the center of the clamp head. The clamp Jaw is only used to measure current. Do not measure voltage by clamping the conductor being measured.
- Versatile Digital Clamp Meter - Accurately measures AC/DC Voltage, AC Current, Capacitance, Resistance, Diode Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues.
- Thoughtful Design - Support Data Hold, Max/Min, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.
- Non-contact Voltage Testing - This Clamp Meter features non-contact voltage testing with sound and light alarm. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a quick beep.
- Enhanced Safety - The clamp meter has passed the environmental pollution degree 2 and overvoltage category III 600V safety standards. If you have any questions about the product, feel free to contact us! Our California-based support team will respond within 24 hours.
Rank No. #3
Klein Tools CL120 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, Resistance, Continuity, Non-Contact Voltage Tester Detection
- VERSITILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads
- NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
- BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
- ACCURATE MEASUREMENTS: Auto-ranging technology selects the appropriate measurement range for accurate results
- CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
Rank No. #4
AstroAI Digital Clamp Meter Multimeter 4000 Counts Auto-ranging Amp Tester Measuring AC/DC Voltage & Current, Resistance, Capacitance, Frequency, Continuity, Live Wire Test, NCV Detection, Blue
- Versatile Digital Clamp Meter: Accurately measures AC/DC Current, AC/DC Voltage, Capacitance, Frequency, Duty Cycle, Resistance, Diode, Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues.
- Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarms. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a brief beep.
- Multifunctional & Easy to read: Support Data Hold, Max/Min, Auto power off after 15 minutes inactivity, low battery indicator and continuity buzzer. The LCD Backlit Screen and Flashlight make it easy to use in a dark working area. ZERO function decreases the data error influenced by the Earth’s magnetic field, and helps you to obtain a more accurate measurement.
- Large Jaw Opening: The jaw opening measures current in a conductor without touching or interrupting the circuit. Its slim and compact size makes it easy to operate in narrow spaces. This clamp meter has passed the environmental pollution test degree 2 and overvoltage category III 600V safety standards.
- Additional Tips: To measure the current you need to clamp the meter around one of the wires and not the whole power cord. Ensure the conductor to betested is in the center of the clamp head. The clamp Jaw is only used to measure current. Do not measure voltage by clamping the conductor being measured.
Rank No. #5
Klein Tools CL810 Digital Clamp Meter, Auto Ranging TRMS, AC/DC Volt/Current, LoZ, Continuity, Frequency, Capacitance, NCVT, Temp, More 1000V, Flashlight
- ACCURATE AND RELIABLE PRECISION: Clamp meter delivers precise readings for various applications and complex signals with True RMS technology and LoZ (Low Impedance) mode
- DURABLE METER FOR DIVERSE APPLICATIONS: Measures AC/DC voltage, current, resistance, micro amps, temperature, diode test, continuity, capacitance, frequency/duty cycle, and inrush with 6.6-Foot (2 m) drop protection and IP40 ingress protection
- ENHANCED VISIBILITY: Transflective reverse-contract display for clear data in any light; lighted dial ensures clear visibility and easy reading in low-light environments
- BUILT IN WORKLIGHT: Illuminate work area to enhancing visibility in dark or confined spaces
- NON-CONTACT VOLTAGE DETECTION: Integrated into the clamp jaw with audible and visual indicators that intensify near the voltage source
Rank No. #6
AstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, Black
- Important Tips - This CM2K0R clamp meter can not test DC Current. If you have any questions about the product, feel free to contact us! Our California-based support team will respond within 24 hours.
- Versatile Digital Clamp Meter - Accurately measures AC/DC Voltage, AC Current, Capacitance, Resistance, Diode Continuity and Live Wire Tests. This clamp meter is a really useful tool for solving industrial and household electrical issues.
- Thoughtful Design: Support Data Hold, Max/Min, Auto Shut-off, low battery indicator and continuity buzzer. Includes Convenient features like Audial and Visual Alarm, LCD Backlit Screen and Flashlight make it easy to use. Two 1.5V AAA batteries are included in the package.
- Non-contact Voltage Testing: This Clamp Meter features non-contact voltage testing with sound and light alarm. When the Meter senses a weak AC signal, the green indicator light will come on and the buzzer will emit a slow, audible beep. when the Meter senses a strong AC signal, the red indicator light will come on and the buzzer will emit a quick beep.
- Enhanced Safety - The clamp meter has passed the environmental pollution degree 2 and overvoltage category III 600V safety standards.
Rank No. #7
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging, 400 Amp, NCVT Tester, Hi-Viz LCD Display, TRMS, Continuity Resistance, Temperature and More
- VERSATILE CLAMP METER: Measures AC/DC current and NCVT via clamp; AC/DC voltage, resistance, continuity, frequency/duty cycle, DC microamps, diode test and capacitance via test-leads; temperature via thermocouple
- NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
- REVERSE-CONTRAST DISPLAY: High-visibility reverse-contrast LCD ensures improved viewability in all lighting conditions
- ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
- CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
Rank No. #8
IDEAL INDUSTRIES INC. 61-737 Digital AC Clamp Multi Meter 400 Amp 600-Volt, Red Electrical Clamp Meter, CAT III 600V | 0–400A AC, 0–600V AC/DC, TRMS, NCV, Diode Testing, Backlit Display, Probe Holder
- WIDE MEASUREMENT RANGE: Clamp multimeter measures up to 400A AC, 600V AC/DC, frequency, resistance, continuity, capacitance, diodes, and temperature
- TRUE RMS ACCURACY: This true RMS multimeter provides precise AC voltage and current readings on non-linear signals
- SAFETY ALERTS: Voltage tester with non-contact voltage sensing, illuminated LED and audible alerts for 40–600V detection
- EASY OPERATION: This digital multimeter has a built-in probe tip holder and a hanging strap clip that allow convenient one-handed use
- CLEAR DISPLAY: Large backlit screen on this multi meter digital screen ensures visibility in low-light environments for faster, safer readings
Rank No. #9
Fluke 323 Clamp Meter for Commercial/Residential Electricians, Measures AC Current to 400 A & AC/DC Voltage to 600 V, Resistance and Continuity, Includes 2 Year Warranty and Soft Carrying Case
- Digital clamp meter measures AC current to 400 amp, AC and DC voltage to 600 v, and resistance to 4 kilo ohms. Does not measure DC current
- The true RMS sensing meter provides accurate readings when measuring linear or non-linear loads, regardless of waveform, Measures resistance to 4 kΩ with continuity detection
- Jaw opening measures current in a conductor up to 30 millimeter without touching or interrupting the circuit. Resistance accuracy: 1.0% ± 5 digits
- Audible continuity sensor confirms that the circuit conducts electricity
- Meets IEC safety standard 61010 1, and is rated for CAT IV installations to 300V and CAT III installations to 600V
Rank No. #10
Klein Tools CL220 Digital Clamp Meter, Auto-Ranging 400 Amp AC, AC/DC Voltage, TRMS, Resistance, Continuity, NCVT Detection, and Temp
- VERSATILE CLAMP METER: Measures AC current and NCVT via clamp; AC/DC voltage, resistance, and continuity via test-leads; temperature via thermocouple
- NON-CONTACT VOLTAGE TESTING: Integrated into the clamp jaw for convenient electrical testing
- BACKLIT DISPLAY: LCD shows clear readings in low-light conditions for enhanced visibility
- ACCURATE MEASUREMENTS: Auto-ranging and True Root Mean Squared (TRMS) technology provides precise and accurate measurements
- CONVENIENT FEATURES: Test lead holder on the side of the clamp and optional magnetic hanger (Cat. Nos. 69445 or 69417) for hands-free operation
Last update on 2026-05-17 / Affiliate links / Images from Amazon Product Advertising API
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- Features: What bells and whistles matter for an Mastech Clamp Meter?
- Specifications: How powerful they are can be measured.
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