Hioki CM4141-50 AC Clamp Meter

The Hioki CM4141-50 is built for heavy-duty AC current measurement work in industrial settings, especially where cables are crowded or space is limited. With three AC current ranges from 60 A up to 2000 A (45 Hz to 1 kHz), it offers True RMS readings so you can trust the accuracy even under non-sine wave loads.

One standout design element is the slim jaw with a cross-section minimum of about 11 mm, allowing this clamp meter to reach around conductors in tight or cluttered panels where bulkier sensors can’t fit. The jaw core diameter is large (φ55 mm), giving the ability to clamp substantial conductors, yet the meter stays relatively lightweight (≈ 300 g) so using it over long periods isn’t overly fatiguing.

Beyond current, it supports voltage measurements (both AC and DC) up to 1000 V with standard leads, and higher with optional probes. It also includes resistance, capacitance, frequency, and temperature functions, plus continuity and diode checking. The CM4141-50 is designed for practical fieldwork: backlight, hold functions, auto power save, buzzer, zero-adjust, etc. The case is rugged, and measurement category ratings are high (CAT IV 600 V / CAT III 1000 V), meaning safer use in higher-risk environments. Battery life is solid, with about 48 hours of typical AC current measurements without wireless adapter or heavy backlight. Plus, it’s compatible with optional wireless adapters (Z3210) and high voltage probe (P2010) to extend its capability.

All in all, this meter balances large capacity with usability and safety — suited to maintenance, inspection, and industrial electrical work where high current and tough environments are common.

Features

• AC Current Range 60-2000 A True RMS — covers large load currents in three ranges.
• Slim Jaw Design (≈ 11 mm cross-section near tip) — reaches in tight spaces between conductors.
• Large Core Jaw (φ55 mm) — can clamp around large conductors or bundles.
• Wide Voltage & Other Measurement Functions — AC/DC voltage up to 1000 V; resistance; capacitance; frequency; temperature; continuity & diode check.
• Strong Safety Ratings — CAT IV 600 V / CAT III 1000 V.
• Lightweight for Class — approx. 300 g, easier to handle over long periods.
• Useful Utility Features — auto hold/display hold; backlight; auto power-save; zero adjustment; buzzer/continuity alert.
• Accessory Compatibility — supports optional probes (high-voltage probe P2010) and wireless adapter (Z3210) for expanded functions.
• Long Battery Life — ~48 hr in typical AC current use (without extras).
• Robust Physical Build — thoughtfully engineered jaw width/shape, rugged enclosure, suitable for industrial conditions.

Includes

• Test Lead L9300 ×1
• Carrying Case C0203 ×1
• LR03 Alkaline battery ×2
• Instruction Manual ×2
• Operating Precautions ×1