Marmonix MCA-212 True RMS Clamp Meter
33 Comments
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Heavy-Duty Performance: High-accuracy digital clamp meter designed for measuring AC and DC current up to 1200A.
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True RMS Precision: Ensures exact AC readings even on non-linear electrical loads.
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Multi-Functional Testing: Measures Voltage (1000V DC / 750V AC), Resistance, Capacitance, Frequency, and Temperature (up to 1000°C / 1832°F).
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Enhanced Visibility: Equipped with a crisp 6000-count LCD screen and bright backlight for dark or complex panels.
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Maximum Protection: Built tough and certified to strict CAT IV 600V safety standards for industrial and commercial use.
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Smart Diagnostics: Features Data Hold, MAX/MIN recording, relative measurement, duty cycle, and auto power-off.
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Description
The Marmonix MCA-212 is a heavy-duty True RMS clamp meter for electricians and maintenance teams who need AC/DC current to 1200 A plus voltage, resistance, capacitance, frequency, duty cycle, diode/continuity, and temperature on a 6000-count backlit display. A CAT IV 600 V rating supports demanding industrial and commercial work when used with correct PPE and procedure.
Browse related tools in the clamp current meters category, and follow safe jaw technique in our how to use a clamp meter safely guide.
MCA-212 digital clamp meter highlights
What the MCA-212 delivers for electrical work:
- AC/DC current measurement up to 1200 A
- True RMS for non-linear loads
- DC voltage to 1000 V · AC voltage to 750 V
- Resistance, capacitance, frequency, duty cycle, temperature
- 6000-count backlit LCD · compact field form factor
- Safety rating CAT IV 600 V
Where the MCA-212 clamp meter fits
Typical jobs where electricians use the MCA-212 include:
- Industrial electrical — high-current feeders and motor circuits
- Commercial facilities — panels, UPS, and distribution checks
- HVAC electrical — compressors and drive loads (True RMS)
- Field service — one meter for current plus common electrical parameters
Related: Clamp meters · Safe clamp meter use · Electrical T&M guide
specifications
specifications
| Function | Range | Accuracy |
|---|---|---|
| DC Voltage | 600 mV / 6 V / 60 V / 600 V / 1000 V | ±(0.5%+3) |
| AC Voltage | 600 mV / 6 V / 60 V / 600 V / 750 V | ±(1.0%+3) |
| DC Current | 600 μA / 6000 μA | ±(1.2%+3) |
| AC Current | 600 μA / 1000 A / 1200 A | ±(2.0%+30) |
| Resistance | 600 Ω – 60 MΩ | ±(0.5%+3 to 1.5%+3) |
| Capacitance | 9.999 nF – 9.999 mF | ±(2.0%+5 to 5.0%+20) |
| Frequency | 99.99 Hz – 9.999 MHz | ±(0.1%+2) |
| Duty Cycle | 1% – 99% | ±(0.1%+2) |
| Temperature | –20 °C to +1000 °C | ±(2.5%+5) |
| Diode/Continuity | Yes | |
| Display | 6000 counts LCD with backlight | |
| Power Supply | Battery operated (2 × AA) | |
| Dimensions | 240 × 90 × 45 mm | |
| Safety Rating | CAT IV 600 V | |
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Reviews (33)
Lars Hendersen –
I am a student and this mca_212 was perfect for my electrical lab class. safe, easy to use, and didn’t break the bank.
Alibek R. –
very nice instrument. The mca-212 work perfectly for my shop. delivery was 2 days early than expected.
Somchai_Tech –
five stars all the way. shipping was lightning fast and the mca-212 does exactly what it says. the 60M ohm resistance range is great.
Siobhán O’Connor –
Love the auto power-off feature on the MCA 212 because I always forget to turn my meters off. The soft carrying case is a nice touch to keep it clean.
Wei Chen –
solid build quality. the dial on the mca-212 is a little stiff at first but it loosens up. readings match my other high end meters perfectly.
Henrik “Circuit” –
wow, super fast shipping! the MarMonix MCA 212 is exactly what our shop needed for diagnosing 3-phase motors.
Matteo “Volt” Rossi –
Best value AC/DC clamp meter on the market right now. The 6000 count display on this MCA-212 is super crisp.
Alejandro “El Jefe” Gomez –
Great clamp meter for the price. I use the MCA 212 for industrial HVAC and the 1200A capacity is awsome. Fast delivery too.
Emre T. –
Great customer suport. I had a question about the capacitance range on the MCA 212 and they answered right away. Meter works fantastic.
Angelo C. –
Fast deliver, great price, amazing product. The temp probe on the MarMonix 212 is surprisingly accurate for HVAC work.
Reza E. –
Best meter I’ve owned. The included carrying case keeps the dust off my MCA-212 in my truck. highly recomend this to any electrician.
Amir_Wiring –
good solid meter. The jaw mechanism on the MCA_212 is smooth and feels durable. no complaints here.
Nikos_Wires –
Top notch qaulity! The max/min function on my new MCA212 is super handy when I’m trying to catch voltage drops.
Andrei “Spark” –
impressive features for the cost. duty cycle and frequency testing on the marmonix 212 work flawlessly. will recommend to my crew.
Tariq “The Wire” Al-Fayed –
exactly what i needed for commerical wiring jobs. The CAT IV rating on the marmonix 212 gives me peace of mind working with high voltage.
Sanjay_J –
works great out of the box. the built in flashlight/backlight on the MCA212 is a life saver. definately buying more marmonix gear in the future.
Tuan_S –
the true RMS of the MCA-212 makes a huge diffrence when working on VFDs. very reliable readings. thanks marmonix!
Bram_HVAC –
Awesome meter, feels very robust. Only giving 4 stars because the box was a little dented when my MCA212 arived, but the meter itself is flawles.
Mikko M. –
Excellent clampmeter for heavy equipment maintenance. Checking starter draw on diesel engines is easy with the 1200A limit of the MCA 212.
Juma “Grizzly” –
very acurate. the mca-212 package arrived in perfect condition. everything you need is in the box ready to go.
Diego M. “TechGuy” –
using this for daily solar panel installations. the dc current clamp of the MCA 212 is very precise. couldnt ask for a better tool.
Kwame “Spark” Adebayo –
Exceeded my expectations. The jaws of the MarMonix 212 open wide enough for thick industrial cables. shipping was super fast.
Chloé Laurent –
Good quality tool. The temperature probe works well but the test leads for the MarMonix MCA212 could be a bit longer. Overall very acurrate measurments.
Ivan_78 –
Very heavy duty feel to it. The backlite screen on my new MCA-212 makes reading in dark basements so much easyer. Highly reccomend.
Klaus “TechNerd” Wagner –
definitly a solid piece of gear. Tested the MCA_212 against my Fluke and the True RMS readings are spot on. fast shiping from marmonix.
Min-Jun “FixIt” –
highly accurate and very rugged. I accidently dropped the MCA_212 from a ladder yesterday and it still works like a charm. Tough plastic!
Jakub T. –
Great AC/DC clamp. The relative measurement feature on the MCA212 is something I use all the time now. very staisfied.
Kenji_Auto –
I bought this MCA212 for automotive diagnostics. checking alternator output is a breeze now. Great packaging and came with a batery!
Kasper_B –
I use this MCA212 around the house and for my car. Might be overkill for DIY but it makes me feel safe with the CAT 4 rating.
Piotr_Electric –
bought this to replace an old broken meter. The MCA-212 is a beast! handle 1000V DC with no problem at all.
Gábor_Maintenance –
Fantastic tool. Use my MCA 212 everyday for facility maintenance. Batteries last a long time in it too.
Budi W. –
Very happy with this purchase. The display on the MCA_212 is huge and easy to read from strange angles.
Avi “The Man” Cohen –
perfect size, fits right in my tool bag. the included test leads for the MCA212 are actually really good quality unlike some other brands.