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EXTECH 380940 Watt Clamp-on Meter

The Extech 380940 400A AC/DC Watt Clamp-on offers versatile true RMS measurements for AC voltage and current, with watt readings up to 240 kW. Its features include auto zero, data hold, max/min recall, and a 0.9-inch jaw opening ideal for tight spaces. The large LCD display and analog bargraph enhance readability, while auto power-off and low battery indicator improve usability. Designed for electrical, HVAC, energy audits, and maintenance applications, this handheld device provides precise power measurements in a compact, portable package for professional and DIY use.

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Part No:380940
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Part No:380940
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Part No:380940
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Part No:380940
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Price: Unit price: $349.99
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Part No:380940
Stock:0
Inv Date:06-05-2026
Price: Unit price: $349.99
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Part No:380940
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Inv Date:06-05-2026
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Part No:380940
Stock:0
Inv Date:06-05-2026
Price: Unit price: $455
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EXTECH 380940 Watt Clamp-on Meter Specifications:

  • AC Power Range: 40KW, 240K, Resolution: 10W, Accuracy: 1.5% + 30
  • DC Power Range: 40KW, 240K, Resolution: 100W, Accuracy: 1.5% + 30
  • AC Current: 400A, Overload protection: 600A, Frequency range: 40Hz-1kHz
  • DC Current: 400A, Overload: 600A
  • AC Voltage: 600V, Accuracy: 1.5% + 20, Overload protection: 800V
  • DC Voltage: 400V, Accuracy: 1.0% + 2, Overload: 800V
  • Frequency: 10Hz-100kHz, Accuracy: 0.8% + 20, Overload protection: 600V AC
  • Dimensions: 7.2 x 2.5 x 1.4 inches
  • Weight: 6.7 oz (190 g) including batteries

Buy the Extech Series Watt Clamp-on: 380940

Purchase the Extech 380940 Watt Clamp-on Meter online today and enjoy fast, reliable power measurement capabilities. Its true RMS AC/DC measurement ensures precision, while the large LCD display and analog bargraph provide clear readings for electrical, HVAC, and maintenance professionals. Compact and portable, it features auto zero, data hold, max/min functions, and overload protection for safe operation. Ideal for energy audits, residential repairs, fleet service, marine, and motorcycle maintenance, this versatile meter guarantees durability, accuracy, and user-friendly operation for demanding tasks.

Get Extech 380940 today—built for precise power measurements and reliable performance in electrical and maintenance applications.

Frequently Asked Questions

Where can I buy EXTECH 380940?

You can click on the BUY or RFQ button to purchase 380940 from an authorized EXTECH distributor.

How do I troubleshoot issues or seek technical support for part 380940?

You can download the 380940 datasheet or visit the EXTECH website for support.

Who is the manufacturer of 380940?

EXTECH

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