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• Fluke 377 FC True-RMS Clamp Meter with iFlex enables contactless voltage and current measurement using FieldSense™, includes 2500 A flexible probe, and supports wireless data logging with Fluke Connect®

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FLUKE-377FC True-RMS AC/DC Clamp Meter with iFlex

The Fluke 377 FC offers a safer, faster way to measure voltage and current using FieldSense™ technology—without contact with live conductors. Ideal for industrial electricians and maintenance professionals, this meter allows complete 3-phase voltage and current tests in just three steps, displaying results on the meter or syncing them wirelessly to the cloud via Fluke Connect®.

Equipped with an iFlex® flexible current probe, the 377 FC measures up to 2500 A AC and provides easier access around large conductors in confined spaces. Visual Continuity enhances usability in noisy areas, while the large backlit display and automatic range selection ensure clarity and convenience on the job. The rugged design make it a reliable tool for any demanding environment.

• FieldSense™ Technology: Perform AC voltage and current measurements without touching live wires.
• iFlex® Flexible Probe: Measures AC current up to 2500 A and improves access around tight conductors.
• Wireless Logging: Sync data with the Fluke Connect® app for remote monitoring and report generation.
• Three-Phase Testing: Complete 3-phase voltage and current testing with automatic phase rotation display.
• Visual Continuity: Bright green screen signals continuity in noisy environments.
• Dual Readout Display: Shows voltage and current simultaneously with backlight support.
• CAT IV 600 V / CAT III 1000 V Safety Rated: Provides enhanced protection in high-energy environments.
• Flexible Mounting: Includes TPAK magnetic hanger for hands-free operation.
• Included Accessories: iFlex probe, test leads, TwistGuard™ probes, grounding clip, case, and more.

• AC Current (Jaw): Up to 999.9 A (±2% ±5 digits, 45–66 Hz)
• AC Current (iFlex): Up to 2500 A (±3% ±5 digits, 5–500 Hz)
• DC Current: Up to 999.9 A (±2% ±5 digits)
• AC Voltage (FieldSense): Up to 1000 V (±3%–5% ±5 digits)
• AC/DC Voltage (Leads): Up to 1000 V (±1% ±5–10 digits)
• Resistance: Up to 60 kΩ (±1% ±5 digits)
• Capacitance: Up to 1000 μF (±1% ±4 digits)
• Frequency (Jaw): 45 Hz–66 Hz (±0.5% ±5 digits)
• Frequency (iFlex): 5 Hz–500 Hz (±0.5% ±5 digits)
• Display: Dual readout LCD with backlight
• Power Supply: 2× AA batteries (approx. 200-hour life)
• Jaw Opening: 34 mm
• iFlex Cable Length: 1.8 m | Coil Length: 450 mm
• Dimensions (L×W×H): 274 mm × 86 mm × 47 mm
• Weight: 463 g (with batteries)
• Operating Temperature: -10 °C to 50 °C
• Ingress Protection: IP30 (jaw closed)
• Altitude: 2000 m (operating), 12000 m (storage)
• Wireless Range: 2405 MHz–2480 MHz, <100 mW output
• Safety Ratings: CAT IV 600 V / CAT III 1000 V