MarMonix MCA204 Clamp Meter | 600 V AC/DC

Marmonix MCA204 True RMS AC Clamp Meter – Overview

The Marmonix MCA204 is a pocket-sized True RMS clamp meter for technicians who need dependable AC current readings without breaking the circuit. Close the jaw around a conductor to read up to 600 A AC, then switch to the test leads for AC/DC voltage up to 600 V, resistance, capacitance, frequency, duty cycle, diode and continuity checks. A Type-K thermocouple input adds temperature measurement from −30 °C to +1000 °C, so one compact instrument covers most panel, motor and HVAC diagnostics.

True RMS sensing keeps AC readings accurate on distorted waveforms from drives, LED drivers and switching supplies, while the inrush function captures motor start-up current in a 100 ms window. Note that the MCA204 measures AC current only; for DC current work, a model such as the MCA206 is the better fit.

Marmonix MCA204 Key Features

• True RMS AC current to 600 A – reliable readings on linear and non-linear loads
• Inrush capture (100 ms) – see the real start-up current of motors and compressors
• NCV detection – quick non-contact live-wire check before you touch anything
• AC/DC voltage to 600 V with auto-ranging
• Resistance to 40 MΩ, capacitance to 4 mF, frequency to 1 MHz, plus duty cycle, diode and audible continuity
• Temperature −30 °C to +1000 °C (−22 °F to +1832 °F) via Type-K probe
• 4000-count backlit LCD updating 3 times per second, with built-in flashlight for dark cabinets
• Data hold, MAX/MIN, peak hold and REL modes, auto power-off and low-battery alert
• CAT III 600 V safety rating in a light ABS body: 172 × 64 × 32 mm, 172 g, powered by 2 × 1.5 V AA batteries

Marmonix MCA204 Accuracy at a Glance

• DC voltage: ±(0.5% + 3)
• AC voltage (40 Hz – 1 kHz): ±(1.0% + 3)
• AC current: ±(2.5% + 8) to ±(5% + 5), depending on range
• Resistance: ±(0.5% + 3) to ±(1.5% + 3)
• Frequency: ±(0.1% + 2)
• Temperature: ±(2.5% + 5)

The full range-by-range table is in the Specifications tab. You can also review the manufacturer listing for the Marmonix MCA204 clamp meter.

Where the Marmonix MCA204 Fits Best

• Distribution boards and sub-panels: load balancing and feeder current checks
• HVAC and refrigeration: compressor inrush, capacitor values and line/suction temperature
• Motors, pumps and fans: running vs start-up current comparison
• Building maintenance: voltage, continuity and NCV checks on lighting and socket circuits
• Electronics benches: frequency and duty-cycle checks on control signals

Marmonix MCA204 Package Contents

• 1 × Marmonix MCA204 clamp meter
• 1 × set of test leads
• 1 × Type-K thermocouple probe
• 2 × 1.5 V AA batteries
• Wrist strap, carrying case and user manual

Buying the Marmonix MCA204 from MME in the UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) supplies genuine Marmonix test and measurement instruments across Dubai, Abu Dhabi and the wider UAE, with technical advice to help you choose the right clamp meter for your work.