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Item #:
129711209
Klein Tools CL390 AC/DC Digital Clamp Meter, Auto-Ranging 400 Amp
90% of respondents would recommend this to a friend
Item #:
129711209
JMD 20475
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The Klein Tools CL390 is your go-to tool for precise measurements, boasting a high visibility LCD display and a comprehensive range of capabilities for both professionals and DIY enthusiasts.
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What Stands Out
Auto-Ranging Functionality
Automatically selects the correct range for measurements, saving time and minimizing errors, perfect for technicians who need efficiency without compromising accuracy in various electrical tasks.
400 Amp Measurement
Capable of measuring up to 400 amps AC/DC, making it versatile for both residential and industrial applications, catering to professionals who work on diverse electrical systems.
Durable Design
Built with high-quality materials to withstand daily wear and tear, ensuring longevity and reliability, ideal for fieldwork and for electricians who require dependable tools in demanding environments.
Product Details
| Measurement Category | CAT III |
| California Prop 65 Warning | WARNING - https://www.p65warnings.ca.gov/ |
| Technology | Digital |
| Model | CL390 |
| Type | Clamp Meter |
| Form Factor | Handheld |
| UPC | 0092644692871 |
| Brand | Klein Tools |
| Test/Measurement Functions | DC Voltage, Capacitance, Duty Cycle, AC Voltage |
| Maximum Input Voltage | 600 V AC/DC |
| MPN | CL390 |
| Features | Auto-Ranging, Clamp |
| Input Protection Features | Clamp Meter |
| Display | Digital |
| Item Weight | 1.5 lbs (680 grams) |
Who Should Buy?
-
Electricians
Ideal for electricians needing to measure AC/DC currents with accuracy and reliability in various environments.
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DIY Enthusiasts
Perfect for home users who want to safely diagnose electrical issues without risking contact with live wires.
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HVAC Technicians
Useful for HVAC professionals to measure electrical currents in heating and cooling systems efficiently.
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Advanced Engineers
Engineers needing highly specialized, advanced functionality may find this meter lacking in features for detailed analysis.
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Heavy Duty Use
Not suitable for industrial applications requiring rugged meters capable of withstanding extreme conditions and heavy usage.
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Beginners
Users with no electrical background may struggle with the operational complexity despite its user-friendly features.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What types of measurements can the Klein Tools CL390 perform?
Answer: It measures AC/DC current, voltage, resistance, continuity, frequency, capacitance, and temperature. -
Question:
Is the display easy to read in different lighting conditions?
Answer: Yes, the high-visibility reverse contrast LCD display optimizes visibility in dark or bright environments. -
Question:
What safety ratings does this clamp meter have?
Answer: It has a CAT III 600V, Class 2, Double insulation safety rating.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“The process was smooth, with clear communication and timelines. This was my 1st purchase and I am really impressed. I will definitely be coming back.”
12 June 2026 · via Trustpilot
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JMD 20475
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
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Features & Benefits
- Automatically ranging TRMS digital clamp meter for precise accuracy.
- Measures AC/DC current, voltage, resistance, frequency, and more.
- High-visibility reverse contrast LCD for optimal viewing in any light.
- Integrated non-contact voltage tester for added convenience.
- Durable design withstands drops and is built for safety.
- Includes essential accessories like test leads, carrying case, and batteries.
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