Fluke 355 AC/DC True RMS Clamp Meter

The Fluke 355 AC/DC True RMS Clamp Meter is a professional-grade electrical measurement tool designed for technicians and engineers who need accurate readings on live conductors without making circuit connections. This clamp meter combines True RMS technology with a wide measurement range, making it suitable for troubleshooting variable frequency drives, motor circuits, and power quality analysis. The large 58 mm jaw opens to clamp around thick cables, while the durable housing meets rigorous safety standards for industrial environments.

Fluke 355 Key Features

The Fluke 355 delivers precise True RMS measurements for both AC and DC current, with ranges extending to 2000 A AC+DC True RMS (1400 A AC, 2000 A DC). Key specifications include a 58 mm jaw size, measurement capability from 10 Hz to 1 kHz, and a crest factor rating that maintains accuracy up to 2.4x the rated current. The meter features a backlit display for improved visibility in enclosed panels, and the trigger levels for inrush and frequency filtering are clearly documented for complex power quality testing scenarios.

• DC and AC current measurement: 10 Hz to 100 Hz range
• Resolution: 10 mA / 100 mA / 1 A across ranges
• Accuracy: 1.5% rdg + 5 digits (DC/low frequency AC)
• Trigger levels for inrush: 0.50 A / 5.0 A / 5 A
• Crest factor: 2 @ 33 A, 2.4 @ 27 A, 2 @ 330 A, 2.4 @ 270 A, 2 @ 1000 A, 2.4 @ 833 A
• AC current 100.1 Hz to 1 kHz with 3.5% rdg + 5 digits accuracy
• Voltage measurement up to 1000 V with 1% rdg + 5 digits accuracy
• Continuity beeper activates at ≤ 30 Ω

Who Needs the Fluke 355?

Electrical maintenance technicians will find the Fluke 355 indispensable for routine circuit troubleshooting and preventive maintenance programs. The True RMS capability ensures accurate readings on non-linear loads and variable frequency drives, which standard averaging meters cannot properly measure. Field service engineers appreciate the large jaw size and durable construction for daily job site use, while panel builders rely on the frequency measurement function to verify motor speed and drive output parameters.

Facilities managers and energy auditors benefit from the Fluke 355’s ability to measure harmonic content and power quality metrics in commercial building systems. The meter’s AC current measurement up to 1 kHz makes it suitable for examining drives and electronic ballasts, while the DC current function serves battery testing and renewable energy system maintenance. Safety-conscious buyers will value the IEC 61010-2-032 rating, providing protection up to 600 V CAT IV and 1000 V CAT III for work on distribution panels and industrial equipment.

Buyers purchasing through MME receive genuine Fluke instrumentation with the manufacturer’s full warranty support, ensuring confidence in critical electrical testing applications.

Fluke 355 Applications

In motor control centers, the Fluke 355 measures running current and startup inrush to verify proper contactor operation and identify potential winding issues. The inrush trigger levels of 0.50 A, 5.0 A, and 5 A provide flexibility for different horsepower ranges, from small single-phase motors to large three-phase drives. Power quality analysts use the frequency measurement function to detect harmonic distortion and verify that variable frequency drives are operating within design parameters.

Building automation systems benefit from the Fluke 355’s current measurement capability on sensor circuits and actuator wiring. The voltage measurement function with 1000 V CAT III rating makes it suitable for control circuit verification and troubleshooting. Energy monitoring projects utilize the True RMS accuracy to calculate actual power consumption versus apparent power, providing data for efficiency improvements and cost reduction initiatives.

Why Buy Fluke 355 from MME?

MME stands behind every Fluke 355 clamp meter with authentic manufacturer warranty coverage and technical support. When you order from mme-ae, you receive genuine Fluke instrumentation factory-calibrated and ready for immediate deployment. The Mohammad Mahdi Electronics team provides product expertise to help you select the right measurement tool for your specific application, whether you are troubleshooting a motor circuit or performing power quality analysis on a variable frequency drive.

Our inventory ensures quick availability of the Fluke 355, so your technicians can minimize downtime on critical electrical systems. We stock genuine Fluke products with the complete accessory package, including test leads rated to 1000 V and the protective carrying case. Order from MME for reliable service and authentic Fluke performance on every job site.

Fluke 355 Electrical Specifications: Current measurement DC and AC 10 Hz to 100 Hz ranges 40 A / 400 A / 1400 A AC rms with 10 mA / 100 mA / 1 A resolution. Accuracy specifications include 1.5% rdg + 5 digits for DC and low frequency AC current ranges. Trigger levels for inrush function are set at 0.50 A, 5.0 A, and 5 A depending on range selection. Crest factor performance maintains 2x to 2.4x accuracy across the crest-factor rating maintained across the AC ranges up to 1400 A. Current measurement AC 100.1 Hz to 1 kHz ranges maintain 3.5% rdg + 5 digits accuracy with corresponding trigger levels. Voltage measurement DC and AC 10 Hz to 100 Hz ranges span 1 mV to 1000 V with 1 mV / 10 mV / 100 mV / 1 V resolution. Accuracy on voltage ranges reads 1% rdg + 5 digits with trigger levels at 0.25 V and 6 V for Hz filter ON and OFF conditions. Ohms measurement provides 0.1 Ω to 100 Ω range with 1.5% + 5 digits accuracy. Continuity beeper sounds at 30 Ω or less and silences above 100 Ω. Frequency measurement covers 15 Hz to 1 kHz with 0.1 Hz resolution from 15 Hz to 399.9 Hz and 1 Hz resolution from 400 Hz to 1 kHz. Accuracy specifications state 0.2% + 2 counts from 5.0 Hz to 100 Hz and 0.5% + 5 counts from 100.1 Hz to 1 kHz. General specifications include six 1.5 V AA batteries providing approximately 100 hours of battery life with typical usage and backlight off. Test leads are rated to 1000 V. Weight measures .814 kg (1.8 lb) with jaw size of 58 mm (2.28 in). Dimensions span 300 x 98 x 52 mm (12 x 3.75 x 2 in). Safety certification covers IEC 61010-2-032 at 600 V CAT IV and 1000 V CAT III. Operating temperature range extends from 32°F to +122°F (0°C to +50°C). Storage temperature ranges from -4°F to 140°F (-20°C to +60°C). Operating humidity spans 0 to 95% non-condensing. Operating altitude maximum is 2000 m, with storage altitude up to 10,000 m. IP rating of 42 indicates indoor use only. Drop test compliance from 1 m height. EMC compliance includes FCC part 15 and IEC/EN 61326-1:1997 class B standards.

Fluke 355 Specifications