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Description
MAJ MT720400A Compact AC Clamp Meter 400A Compact AC Clamp Meter Overview The MT720 is a 400A AC TRMS Clamp Meter, with indication on a large 4000 count backlit LCD display, providing fast sampling time with high accuracy. The meter measures 1000V AC DC, temperature, frequency, capacitance and resistance measurements, plus 100ms Inrush current and Peak Voltage value. The VFD function allows the user to measure stable voltage in high frequency applications of
400A Compact AC Clamp Meter
400A Compact AC Clamp Meter
Overview
The MT720 is a 400A AC TRMS Clamp Meter, with indication on a large 4000 count backlit LCD display, providing fast sampling time with high accuracy. The meter measures 1000V AC/DC, temperature, frequency, capacitance and resistance measurements, plus 100ms Inrush current and Peak Voltage value. The VFD function allows the user to measure stable voltage in high frequency applications of Variable Frequency Drives. Added features include Relative mode for Capacitance Zero and DCV, ACV and ACA offset adjustment, Non-Contact voltage detection, Data hold function and a built-in flashlight for dimly lit areas. Housed in a modern double moulded rubber housing.
Features
- 4000 count backlit LCD display
- Ø30mm Cable Clamp size
- Measurement of DC voltage and AC voltage up to 1000V
- Capacitance to 100mF
- Temperature measurement from -20â°C to 1000â°C
- INRUSH Current Measurements
- VFD – Variable Frequency Drive voltage value
- NCV – Non-Contact Voltage Detector
- Built-In Flashlight
- Continuity buzzer and Diode Test
- Peak Mode and Data Hold function
- Auto Power Off
Accessories:
- Soft Carrying Case
- HDT1282 Comfigrip Test Set
- MT660 Wire Probe (-20° to 250°C)
- MT802 K-Type Adaptor
- 1.5V AAA Batteries
- Instruction Manual
Specifications
| Jaw size |
30mm |
|---|---|
| AC Current |
400A |
| AC current resolution |
10mA |
| AC Current accuracy |
±(2.5% +8) |
| DC Voltage |
1000V |
| DC Voltage resolution |
1mV |
| DC Voltage accuracy |
±(1.0% +3) |
| AC Voltage |
1000V |
| AC Voltage resolution |
1mV |
| AC voltage accuracy |
±(1.2% +5) |
| Resistance |
40MΩ |
| Resistance resolution |
0.1Ω |
| Resistance accuracy |
±(1.5% +2) |
| Frequency |
10Hz – 100kHz |
| Frequency resolution |
1Hz |
| Frequency accuracy |
±(1.0% +5) |
| Capacitance |
99.99mF |
| Capacitance resolution |
0.01nF |
| Capacitance accuracy |
±(3.0% +5) |
| Temperature |
-20 to 1000°C |
| Temperature resolution |
0.1°C |
| Temperature accuracy |
±(3.0% +3) |
| Duty Cycle |
20 to 80% |
| Duty Cycle resolution |
0.1% |
| Duty Cycle accuracy |
±(1.2% +10) |
| Continuity |
Yes |
| Diode Test |
Yes |
| True RMS Measurements |
ACV, ACA |
| AC Bandwidth |
2KHz |
| Digital Display |
4000 |
| Non-Contact Voltage (NCV) |
Yes |
| Over-range indication |
Yes |
| Input Impedance |
˃10MΩ DCV & ˃10MΩ VAC |
| Min Max |
Yes |
| Variable Frequency Drive |
Yes |
| Inrush Current |
100mS |
| Peak hold |
Yes |
| Data Hold |
Yes |
| Back Light |
Yes |
| Flash Light |
Yes |
| Enclosure |
Double Injection moulding |
| Low battery indication |
Yes |
| Power source |
3 x LR03 (AAA) |
| Dimensions |
220 x 80 x 39mm |
| Weight |
305g |
| Safety Specs |
IEC 61010-1 CATIII 600V |
Downloads
Additional Information
| Device | Clamp Meter |
| Type | 400A | Compact | AC |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Happy dog!
Color: 3 PCS
Great product for a Great Dane aggressive chewer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Good Toy
Color: 3 PCS
This dog toy is incredibly sturdy and holds up well to heavy chewing and rough play. My dog absolutely loves it and can play with it for hours without causing much wear to the toy itself. The only downside is that it’s pretty hard and heavy, so when it gets tossed around indoors, it can easily bang into walls and furniture and leave marks or dents. Great durable toy overall, but probably better suited for outdoor play or open spaces.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
The last forever!
Color: 3 PCS
These are great and last forever. My little guys are super chewers and have had these for months. Great buy!!
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Cute, Durable, and Keeps Them Busy for Hours
Color: 3 PCS, Color: 3 PCS
My girls are mild chewers, and these ocean-themed toys keep them entertained for hours. They absolutely love chewing on them, and the starfish, shell, and lobster designs are adorable while still being very functional. The fun shapes really hold their interest and help satisfy natural chewing instincts, which is great for keeping them busy without getting bored quickly.
I’m also impressed with how well they’ve held up over time. Even with regular use, the material remains durable, easy to clean, and long-lasting. They’re made from food-grade nylon, feel safe, and encourage healthy chewing habits. Overall, these are a fantastic choice for mild to moderate chewers and a solid, long-lasting toy my girls truly love
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Reviewed in the United States on December 27, 2025
★★★★★ 4
Good Dog Toy
Color: 3 PCS
These have lasted my dogs way longer than I thought. My dogs chew on them probably a few times a week, they rotate which ones they use. The only reason I am not giving 5 stars is because they are small. I think Large Chew toy, I think a Large Chew Toy. These are better fitted for Medium to Small Sized Dogs.
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Reviewed in the United States on January 6, 2026