MarMonix MCA 204 AC Clamp Meter | 600A True RMS
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True RMS Accuracy: Delivers exact trurms readings for all electrical loads.
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600A AC Capacity: Safely tests high-capacity current and up to 600V AC/DC.
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Inrush Current: Built-in capability to capture sudden motor startup power surges.
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Pro Safety: Features NCV detection and a certified CAT III 600V security rating.
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High Visibility: Backlit 4000-count LCD with an integrated LED flashlight.
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All-in-One: Compactly measures Temperature, Capacitance, Frequency, and Resistance.
The MarMonix MCA 204 AC Clamp Meter is a smart, ultra-compact, and highly functional AC clamp meter designed for modern technicians and engineers. Featuring an extremely intuitive control panel and a crisp 4000-count LCD with an integrated backlight and flashlight, this meter is perfect for troubleshooting in tight, dark spaces.Engineered with advanced True RMS technology, the MCA204 provides highly reliable performance by offering exact trurms readings for AC current (up to 600A) and AC/DC voltage (up to 600V). With its ergonomic, lightweight design and strict CAT III 600V safety compliance, it is an essential diagnostic tool for residential wiring, commercial HVAC, and industrial maintenance.
Advanced Features of the MCA-204 AC Clamp Meter
The MCA-204 packs professional-grade capabilities into a highly portable device:
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Precision TrueRMS Measurement: Ensures accurate AC readings on both linear and non-linear electrical loads.
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Inrush Current & Peak Hold: Easily capture sudden power surges when starting motors and heavy machinery.
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NCV (Non-Contact Voltage) Detection: Perform fast, safe live-wire checks without stripping cables.
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Multi-Functional Diagnostics: Measures AC/DC Voltage, AC Current, Resistance, Capacitance, Frequency, Duty Cycle, Diode, and Continuity.
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Broad Thermal Range: Built-in temperature testing from –30°C to +1000°C (–22°F to +1832°F).
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Smart Operation: Equipped with data hold, auto power-off, a low battery alert, and a built-in flashlight for dark environments.
- Compact & Safe: Measures just 172 × 64 × 32 mm and is fully CAT III 600V certified.
Technical Specifications: MCA_204 Series
| Function | Range | Accuracy |
| DC Voltage | 400 mV / 4 V / 40 V / 400 V / 600 V | ±(0.8% + 3) |
| AC Voltage | 400 mV / 4 V / 40 V / 400 V / 600 V | ±(1.2% + 3) |
| AC Current | 40 A / 400 A / 600 A | ±(2.5% + 5) |
| Resistance | 400 Ω / 4 kΩ / 40 kΩ / 400 kΩ / 4 MΩ / 40 MΩ | ±(0.8% + 3) to ±(1.5% + 3) |
| Capacitance | 40 nF / 400 nF / 4 μF / 40 μF / 400 μF / 4 mF | ±(6.0% + 5 to 20) |
| Frequency | 40 Hz / 400 Hz / 4 kHz / 40 kHz / 400 kHz / 1 MHz | ±(0.1% + 2) |
| Temperature | –30°C to +1000°C / –22°F to +1832°F | ±(2.5% + 5) |
| Duty Cycle | 1% – 99% | ±(0.1% + 2) |
| Diode / Continuity | Yes | — |
| Inrush Current | Yes | — |
| NCV Detection | Yes | — |
| Display | 4000 counts LCD with backlight | — |
| Power Supply | Battery operated | — |
| Dimensions | 172 × 64 × 32 mm | — |
| Safety Rating | CAT III 600 V | — |
Typical Applications for the MarMonix 204
The versatile design of the MarMonix MCA204 makes it suitable for a wide variety of field and shop applications:
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Electrical Maintenance: Rapid voltage, continuity, and AC current checks in both industrial and residential panels.
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HVAC Systems: Verify thermostat temperatures, motor resistance, and capacitor health
- Automotive Diagnostics: Test battery systems, alternators, and starter motor inrush currents.
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Construction & Field Service: Fast troubleshooting and NCV safety checks on active jobsites.
DIY & Educational Labs: A highly safe, easy-to-use instrument featuring professional-grade functions for learning
What’s Included in the MarMonix MCA 204 AC Clamp Meter Box?
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1x MarMonix MCA 204 Main Device
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Set of Premium Test Leads
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Set of Insulated Alligator Clips
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1x Thermocouple Type-K Probe
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Quick Start User Guide
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Durable Carry Case
Downloads
Siobhán O. –
love the screen on this mca204. very easy to read even in direct sun. great value for money
Arjun Patel –
very fast delivery to dubai. using the mca204 for residential wiring and it hasnt failed me yet
Hans Schmidt –
Top quality! i tested the marmonix 204 against my expensive bench meter and the true rms is spot on. fast shipping too
Lucas Silva –
solid meter for the price. MCA204 is good but i wish the carry case was a little bigger. delivery was 3 days early!
Chloé Dubois –
meter is okay but it took too long to arrive at my house in france. MCA-204 works fine though
Fatima Al-Harbi –
excellent service and fast delivery. i use the MCA_204 for my electrical workshop and it works perfectly
Amira M. –
i love how simple the panel is on the mca-204. no confusing buttons. just works
Niklas_Sweden –
best clamp meter for hvac. the temp probe on the mca_204 is actually accurate compared to others
Reza Rahmani –
accurate and durable. the mca_204 has been dropped twice and still works like new
Liam O’S. –
best value for a trurms meter. the mca204 is easy to use and the flashlight is a nice bonus
Ivan P. –
everything works as described. the trurms is reliable for my industrial jobs. mca-204 is a beast
Ingrid N. –
perfect for my toolkit. mca-204 is small but powerful. delivery was lightning fast
Tuan_Vietnam –
safe and reliable. the cat iii rating on the mca204 gives me peace of mind
Chen Wei –
very good for factory maintenance. the 600a limit on the mca204 covers everything i need
Mateo Rossi –
finally a good clamp meter that doesnt cost a fortune. the trurms is very accurate on this MCA 204 and shipping was super fast to italy
Diego R. –
true rms is a must for my job and the mca 204 delivers. very happy with the purchase
Ali_90 –
five stars for the mca 204. the backlight is a game changer in dark attics
Javier Gomez –
excelente producto. the marmonix mca 204 is very tough and the measurements are consistent
Min-Jun K. –
great support from the team. they helped me understand the duty cycle on the mca-204 very quickly
Sanjay G. –
simple to use and very accurate. the ncv on the mca204 is very sensitive which is great for safety
Piotr_PL –
the inrush current feature on this mca 204 is exactly what i needed for motor testing. very rugged device
Kwame A. –
very lightweight and easy to carry around all day. mca_204 is now my favorite tool for quick diagnostics
Jean_Maintenance –
fast shipping and great product. the MCA 204 is exactly what our team needed for field service
Gábor F. –
highly recommend the mca_204 for anyone doing maintenance. build quality is top tier
Svetlana 82 –
the meter is good but i had a hard time with the manual. mca 204 is accurate though once you figure it out
Yuki_99 –
build quality is very solid for the mca204. flashlight is actually bright enough to use in dark panels. very happy with it
Budi_Tech –
package arrived in perfect condition to jakarta. the MCA 204 is very precise for automotive work
Lars “Hobbyist” Andersen –
Good tool overall. the mca-204 is great for my home projects but the leads are a bit stiff in winter. still a solid 4 stars