HIOKI CM4373-90 vs Fluke 376 FC: Which Clamp Meter Fits Your Application?

Posted by Billy 21/09/2026 0 Comment(s)
CLAMP METER COMPARISON

HIOKI CM4373-90 vs Fluke 376 FC: Why Consider HIOKI?

A practical comparison for electricians, utilities, industrial maintenance teams, EV service, solar work and high-current DC applications.

The Fluke 376 FC is a well-known industrial clamp meter, but the HIOKI CM4373-90 brings compelling advantages for users who need higher direct AC/DC current capability, a larger jaw, broad operating temperature range and wireless analysis. The key difference is simple: the CM4373-90 measures up to 2000 A AC or DC directly through the clamp.

Feature HIOKI CM4373-90 Fluke 376 FC Practical Difference
Direct AC Current Up to 2000 A Up to 999.9 A via jaw Higher direct range
Direct DC Current Up to 2000 A Up to 999.9 A Major DC advantage
AC Current Accuracy ±1.3% rdg. ±0.3 A* ±2% ±5 digits at 10–100 Hz Higher basic accuracy
Jaw Opening 55 mm 34 mm Larger conductors
Wireless Z3210 + GENNECT Cross Fluke Connect Both supported
Harmonic Analysis Up to 30th harmonic Not a primary meter function Added analysis
Operating Temperature -25°C to 65°C -10°C to 50°C Wider field range
Environmental Protection IP54** IP30, non-operating More rugged design
Safety Rating CAT IV 600 V / CAT III 1000 V CAT IV 600 V / CAT III 1000 V Equivalent category
Where Fluke has an advantage: the Fluke 376 FC package includes an iFlex flexible current probe that extends AC current measurement to 2500 A. This extended range is AC only; the HIOKI CM4373-90 measures up to 2000 A in both AC and DC directly with its clamp.

Why the CM4373-90 Is Especially Attractive for DC Applications

  • Battery systems: high charge and discharge currents without inserting a shunt.
  • EV and charging systems: direct high-current DC capability for service and troubleshooting.
  • Solar and DC power systems: 2000 A DC provides more headroom than a 1000 A-class clamp.
  • Industrial drives and power conversion: AC/DC detection, low-pass filtering and wireless logging improve troubleshooting flexibility.

Who Should Choose the HIOKI CM4373-90?

The CM4373-90 is particularly suitable when work includes high-current DC, large conductors, harsh Canadian field conditions, EV systems, batteries, solar installations, utilities or industrial maintenance. For flexible AC measurements in crowded panels, the Fluke iFlex accessory remains useful; final selection should match the actual job.

Need Help Selecting the Right Clamp Meter?

RCC Electronics provides Canadian application support for HIOKI electrical test equipment.

 

View HIOKI CM4373-90 Contact RCC Electronics

* Accuracy depends on range, frequency and measurement conditions. ** IP54 applies under conditions stated by HIOKI. Confirm latest official datasheets before final selection.

Tags: HIOKI CM4373-90 Fluke 376 FC Clamp Meters Electrical Testing Industrial Maintenance