Description
Fluke 377 FC Non-Contact Voltage and Current True RMS Clamp Meter with FieldSense Technology
The Fluke 377 FC Non-Contact Voltage and Current True RMS Clamp Meter with FieldSense® Technology represents one of Fluke’s most innovative electrical testing solutions, designed to simplify measurements while improving technician safety and productivity. Engineered for professional electricians, industrial maintenance engineers, renewable energy technicians, utility personnel, automation specialists, HVAC engineers, electrical contractors, and field service professionals, the Fluke 377 FC combines True RMS accuracy, FieldSense® non-contact voltage measurement, 1000A AC/DC current measurement, Fluke Connect® wireless connectivity, and iFlex® Flexible Current Probe compatibility into one advanced diagnostic instrument.
As electrical systems continue to evolve with Variable Frequency Drives (VFDs), industrial automation, renewable energy systems, battery storage installations, electric vehicle charging infrastructure, smart buildings, and digital power management systems, technicians require faster and safer methods of obtaining accurate measurements. The Fluke 377 FC has been developed specifically to address these modern requirements by minimizing direct probe contact while maximizing measurement capability.
The most significant innovation in the Fluke 377 FC is FieldSense® Technology. Unlike conventional clamp meters that require test leads connected directly across electrical conductors for voltage measurement, FieldSense enables technicians to obtain simultaneous voltage and current measurements without direct metallic contact with the energized conductor. By referencing a grounding point, the instrument calculates voltage and current accurately while significantly reducing measurement complexity and improving operator safety.
This technology allows technicians to determine true power (kW) quickly by simultaneously displaying voltage and current values. As a result, electrical troubleshooting becomes faster, particularly when diagnosing motors, compressors, HVAC equipment, transformers, industrial machinery, electrical feeders, renewable energy systems, and commercial power distribution equipment.
The Fluke 377 FC measures AC and DC current up to 1000 Amps using its integrated clamp jaw. The non-contact clamp enables safe current measurement without disconnecting cables or interrupting equipment operation, reducing maintenance time and minimizing production downtime in industrial facilities.
For larger conductors and difficult-to-access installations, the Fluke 377 FC is fully compatible with the Fluke iFlex® Flexible Current Probe, allowing AC current measurements up to 2500A AC. The flexible probe wraps easily around large busbars, oversized conductors, bundled cables, and confined installations where traditional clamp jaws cannot reach, providing unmatched flexibility for utility, renewable energy, manufacturing, and heavy industrial applications.
The Fluke 377 FC also integrates seamlessly with the Fluke Connect® wireless platform, enabling technicians to remotely monitor measurements, automatically record inspection data, create maintenance reports, analyze historical trends, and share results with maintenance teams. Wireless connectivity reduces manual documentation while supporting predictive maintenance strategies and improving overall operational efficiency.
Beyond current measurement, the Fluke 377 FC functions as a complete professional digital multimeter. Using the supplied test leads when required, technicians can measure AC/DC voltage, resistance, continuity, capacitance, frequency, and DC millivolts, making the instrument suitable for a broad range of electrical maintenance, commissioning, troubleshooting, and diagnostic applications.
The instrument includes Inrush Current measurement, allowing accurate capture of startup current drawn by industrial motors, pumps, compressors, HVAC systems, conveyors, transformers, and manufacturing equipment. This feature helps technicians evaluate equipment performance, identify overloaded circuits, verify protective device sizing, and diagnose startup-related electrical problems.
The large backlit LCD display provides exceptional readability in electrical rooms, industrial plants, substations, commercial facilities, outdoor renewable energy sites, and low-light maintenance environments. Simultaneous display of multiple measurement values improves efficiency by reducing the need for repeated testing.
Its ergonomic clamp jaw provides convenient access to conductors commonly found in industrial switchboards, motor control centers, transformers, electrical distribution panels, utility systems, and commercial electrical installations. Combined with the iFlex flexible probe, the Fluke 377 FC offers outstanding measurement versatility across virtually every electrical application.
Built to withstand demanding industrial environments, the Fluke 377 FC features rugged impact-resistant construction suitable for manufacturing facilities, utilities, mining operations, oil and gas installations, renewable energy projects, transportation infrastructure, commercial buildings, and heavy industrial maintenance operations. Its lightweight ergonomic design supports comfortable one-handed operation during extended field work.
Safety remains central to Fluke’s engineering philosophy. The Fluke 377 FC complies with CAT IV 600V and CAT III 1000V safety standards, allowing qualified technicians to safely perform measurements on industrial distribution systems, service entrances, commercial electrical installations, permanently installed equipment, and utility infrastructure while following internationally recognized electrical safety practices.
Additional productivity features include Data Hold, Min/Max recording, Low-Pass Filter for VFD measurements, Automatic Power-Off, Auto Ranging, and integrated wireless data management through the Fluke Connect ecosystem.
Typical Applications
The Fluke 377 FC is ideal for:
- Industrial electrical maintenance
- Renewable energy systems
- Solar photovoltaic (PV) installations
- Battery Energy Storage Systems (BESS)
- Electric vehicle charging infrastructure
- Utility substations
- Industrial automation
- Motor diagnostics
- Manufacturing facilities
- Predictive and preventive maintenance
The Fluke 377 FC delivers one of the most advanced electrical testing solutions available by combining 1000A AC/DC current measurement, True RMS technology, FieldSense® non-contact voltage measurement, Fluke Connect wireless communication, and iFlex® compatibility. Whether diagnosing industrial equipment, monitoring power distribution systems, commissioning renewable energy installations, troubleshooting VFD-controlled motors, or performing predictive maintenance, the Fluke 377 FC provides industry-leading accuracy, productivity, safety, and reliability.
Japsin Instrumentation – Since 1974

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