Klein Tools CL220
#3 in AC onlyFull review
A low-cost true-RMS AC clamp for home and light electrical work, with temperature for basic HVAC checks.
Amazon $69.97$69.97
The Klein Tools CL220 is the better clamp meter overall, rated 3.2 to 3.0. The Klein Tools CL220 leads on price, features and jaw opening. The Fluke 323 wins on safety rating. The Klein Tools CL220 costs $82.88 less ($69.97 vs $152.85).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Fluke 323
#5 in AC onlyFull review
A simple, well-built true-RMS AC clamp for electricians who want a Fluke for everyday panel and circuit checks.
Amazon $152.85$152.85
Which should you buy?
- Choose the Klein Tools CL220 for price ($69.97 vs $152.85), features (true RMS, non-contact voltage, temperature vs true RMS) and jaw opening (41 mm jaw vs 30 mm jaw).
- Choose the Fluke 323 for safety rating (CAT IV 300 V / CAT III 600 V vs CAT III 600 V).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every AC only clamp meter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Klein Tools CL220 | Fluke 323 |
|---|---|---|
| Overall rating | 3.2/5 | 3.0/5 |
| Current range 15% | 46 400 A through the jaw | 46 400 A through the jaw |
| DC current 15% | 0 no DC current | 0 no DC current |
| Safety rating 20% | 55 CAT III 600 V | 75 CAT IV 300 V / CAT III 600 V |
| Features 15% | 45 true RMS, non-contact voltage, temperature | 25 true RMS |
| Accuracy 10% | 67 2% of reading | 67 2% of reading |
| Jaw opening 5% | 70 41 mm jaw | 33 30 mm jaw |
| Warranty 10% | 50 2-year warranty | 50 2-year warranty |
| Price 10% | 85 $69.97 | 51 $152.85 |
Specifications
| Klein Tools CL220 | Fluke 323 | |
|---|---|---|
| Measurement | ||
| AC current (jaw) | 400 A | 400 A |
| DC current (jaw) | No | No |
| Voltage | 600 V | 600 V |
| Current accuracy | 2% of reading | 2% of reading |
| Jaw opening | 41 mm | 30 mm |
| Safety | ||
| CAT rating | CAT III 600 V | CAT IV 300 V / CAT III 600 V |
| Features | ||
| True RMS | Yes | Yes |
| Inrush | No | No |
| LoZ mode | No | No |
| Non-contact voltage | Yes | No |
| Low-pass filter | No | No |
| Temperature | Yes | No |
| Phone app | No | No |
| Build | ||
| Weight | 313 g | 265 g |
| Warranty | 2 years | 2 years |