Fluke 368 FC True RMS Leakage Current Clamp Meter, 40 mm

The Fluke 368 FC is a True RMS leakage current clamp meter engineered for precision AC current measurement in industrial and commercial electrical systems. With a 40 mm jaw opening and fully shielded jaw design, it captures small leakage signals while rejecting external electromagnetic interference. The meter delivers True RMS measurements across complex, non-sinusoidal waveforms with a crest factor of 3, ensuring accuracy in real-world power conditions.

Technical Specifications

Measurement range spans 3 mA to 60 A across six selectable scales. The 3 mA, 30 mA, and 300 mA ranges offer 0.001 mA, 0.01 mA, and 0.1 mA resolution respectively. The 3 A, 30 A, and 60 A ranges provide 0.001 A, 0.01 A, and 0.1 A resolution. Accuracy is ±1% + 5 digits for 3 mA through 30 A, and ±2% + 5 digits for the 60 A range. Frequency response extends from 40 Hz to 1 kHz. A selectable filter removes noise within the 40 to 70 Hz band while maintaining accuracy with the filter off at 40 Hz to 1 kHz. The 3300-count backlit LCD display refreshes at 4 times per second. Data logging stores up to 65,000 measurement points internally. Min/Max/Average readings and a data hold function enable detailed trend analysis. The meter supports wireless connectivity via Fluke Connect for remote monitoring and cloud-based data management.

Key Features

• CAT III 600 V / CAT IV 300 V safety rating for use in industrial environments


• Forward-facing LED work light for illuminated measurement sites


• Auto power-off after 15 minutes of inactivity; auto backlight-off to extend battery life


• Two AA alkaline batteries (IEC LR6) provide over 150 hours operation without backlight and spotlight


• Operating temperature range: -10 °C to +50 °C; storage: -40 °C to +60 °C


• Compact form factor: 234 mm H × 101 mm W × 46 mm D; weight 500 g

Typical Applications Leakage current diagnostics in medical device installations, building electrical systems, industrial machinery control circuits, and equipment safety verification.

Compatibility & Integration Fluke Connect app integration enables real-time data streaming, historical analysis, and automated alerting across networked measurement campaigns.