Amprobe AMP-220
#6 in AC/DCFull review
An accurate AC/DC clamp for motor and drive maintenance, priced above rivals with similar features.
Amazon $243.99$243.99
600 A600 ACAT III 600 V
3.4/5
A true-RMS AC/DC clamp with handy jobsite touches, for electricians who don’t need inrush or a CAT IV rating.
- 400 AAC current
- 400 ADC current
- CAT III 600 VSafety
Check price at Amazon$90.57
Price checked November 9, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Reads AC and DC current to 400 A with true RMS
- Built-in non-contact voltage tester, work light and third-hand probe holder
Cons
- Rated CAT III 600 V, not CAT IV
- Jaw size, accuracy and warranty not published
How it scores
The rating comes from 8 measured or published factors, each scored 0-100 against fixed reference points for its type. How we rank explains each one.
Specifications
| Model number | 21550T |
|---|---|
| Measurement | |
| AC current (jaw) | 400 A |
| DC current (jaw) | 400 A |
| Safety | |
| CAT rating | CAT III 600 V |
| Features | |
| True RMS | Yes |
| Non-contact voltage | Yes |
| Temperature | Yes |
Alternatives in this type
UNI-T UT216C
#7 in AC/DCFull review
A feature-packed 600 A AC/DC clamp for HVAC and electrical work at a mid-range price.
Amazon $114.29$114.29
600 A600 ACAT III 600 V / CAT II 1,000 V
UNI-T UT204R
#9 in AC/DCFull review
A low-cost AC/DC clamp for car, solar and household work where a high safety rating isn’t needed.
Amazon $76.49$76.49
600 A600 ACAT III 300 V / CAT II 600 V
Compare
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