Fluke FLUKE-355 Clamp Meter 2000A Cat Iii Cat Iv True Rms

Product Description

The FLUKE FLUKE-355 is a heavy-duty clamp meter designed for measuring current, voltage, resistance, and frequency in electrical systems. It accepts jaw openings up to 2.2835 inches and handles up to 2000 amps DC, 600 volts AC, and 1000 volts DC. The True RMS AC measurement capability delivers accurate readings on non-sinusoidal waveforms, making it reliable on variable-frequency drives, motor loads, and other distorted-wave circuits. A 4000-count digital display and inrush current function round out the core feature set. Licensed electricians, HVAC technicians, and industrial maintenance technicians are the primary users.

The FLUKE-355 suits residential, commercial, and light industrial electrical work where high-current conductors must be measured without breaking the circuit. The clamp-on jaw design allows non-contact current measurement on conductors up to 2.2835 inches in diameter. The CAT III and CAT IV safety ratings make it appropriate for measurements at the distribution panel, service entrance, and outdoor utility connections. It ships with alligator clips, test leads, test probes, a carrying case, and a manual, so no additional accessories are required for basic commissioning or troubleshooting work.

Key Features

• True RMS AC measurement for accurate readings on distorted waveforms
• 2000A DC maximum current range with clamp-on jaw — no circuit interruption needed
• CAT III and CAT IV rated per IEC 61010 for service-entrance and distribution-level work
• Inrush current capture function for motor and compressor startup diagnostics
• 4000-count digital display with resistance measurement up to 400,000 ohms
• Ships complete with alligator clips, test leads, test probes, carrying case, and manual

Compatibility

Designed for use on conductors and bus bars up to 2.2835 inches in diameter; suitable for single-conductor applications in residential service entrances, commercial distribution panels, and industrial motor circuits where CAT III or CAT IV measurement categories are required.

Installation Notes

Installation and use should be performed by a licensed electrician or qualified technician familiar with NFPA 70E electrical safety work practices. Always verify the meter category rating meets or exceeds the voltage and installation category of the circuit being measured before taking a reading. De-energize and lock out equipment whenever possible before positioning the jaw; if live-circuit measurement is required, follow arc-flash and PPE protocols appropriate to the incident energy level. Replace the AA battery only with the meter de-energized and the jaw closed.