Klein Tools CL445
#1 in AC onlyFull review
An HVAC clamp with inrush, flame-sensor microamps and a CAT IV rating at a mid-range price.
Amazon $94.85$94.85
The Klein Tools CL445 rates 3.7 among AC only clamp meters; the Fluke 301D rates 3.2 among AC/DC ones. The Klein Tools CL445 costs $33.14 less ($94.85 vs $127.99).
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 301D
#10 in AC/DCFull review
A slim, light AC/DC clamp for residential and light commercial work where tight panels matter more than a high safety rating.
Amazon $127.99$127.99
Scores side by side
These two sit in different type classes (AC only and AC/DC), and each is scored against the reference points for its own class, so a rating says how well each does among its own type peers. How we rank explains each factor.
| Factor weight | Klein Tools CL445 | Fluke 301D |
|---|---|---|
| Overall rating | 3.7/5 | 3.2/5 |
| Current range 15% | 60 600 A through the jaw | 60 600 A through the jaw |
| DC current 15% | 25 DC microamps (600 uA) through the test leads only | 100 DC current to 600 A through the jaw |
| Safety rating 20% | 100 CAT IV 600 V / CAT III 750 V | 25 CAT III 300 V |
| Features 15% | 65 true RMS, inrush, non-contact voltage, temperature, DC microamps | 0 none of the listed features |
| Accuracy 10% | 67 2% of reading | 67 2% of reading |
| Jaw opening 5% | 40 32 mm jaw | 47 34 mm jaw |
| Warranty 10% | 50 2-year warranty | 50 2-year warranty |
| Price 10% | 72 $94.85 | 59 $127.99 |
Specifications
| Klein Tools CL445 | Fluke 301D | |
|---|---|---|
| Measurement | ||
| AC current (jaw) | 600 A | 600 A |
| DC current (jaw) | No | 600 A |
| DC microamps (leads) | 600 uA | - |
| Voltage | 750 V | 600 V |
| Current accuracy | 2% of reading | 2% of reading |
| Jaw opening | 32 mm | 34 mm |
| Safety | ||
| CAT rating | CAT IV 600 V / CAT III 750 V | CAT III 300 V |
| Features | ||
| True RMS | Yes | No |
| Inrush | Yes | No |
| LoZ mode | No | No |
| Non-contact voltage | Yes | No |
| Low-pass filter | No | No |
| Temperature | Yes | No |
| Phone app | No | No |
| Build | ||
| Weight | 357 g | 154 g |
| Warranty | 2 years | 2 years |