Fluke 375 FC
#1 in AC/DCFull review
A professional AC/DC clamp with the safety rating and phone logging that commercial and industrial electricians need.
Amazon $429$429
The Fluke 375 FC is the better clamp meter overall, rated 4.0 to 3.7. The Fluke 375 FC leads on safety rating, accuracy and jaw opening. The Extech EX655 wins on price and features. The Extech EX655 costs $255.50 less ($173.50 vs $429).
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.
Extech EX655
#2 in AC/DCFull review
A well-equipped AC/DC clamp with a three-year warranty, for HVAC and maintenance technicians.
Amazon $173.50$173.50
Which should you buy?
- Choose the Fluke 375 FC for safety rating (CAT IV 600 V / CAT III 1,000 V vs CAT III 600 V / CAT II 1,000 V), accuracy (2% of reading vs 2.5% of reading) and jaw opening (34 mm jaw vs 30 mm jaw).
- Choose the Extech EX655 for price ($173.50 vs $429) and features (true RMS, inrush, non-contact voltage, temperature vs true RMS, inrush, phone app).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every AC/DC clamp meter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fluke 375 FC | Extech EX655 |
|---|---|---|
| Overall rating | 4.0/5 | 3.7/5 |
| Current range 15% | 60 600 A through the jaw | 60 600 A through the jaw |
| DC current 15% | 100 DC current to 600 A through the jaw | 100 DC current to 600 A through the jaw |
| Safety rating 20% | 100 CAT IV 600 V / CAT III 1,000 V | 55 CAT III 600 V / CAT II 1,000 V |
| Features 15% | 50 true RMS, inrush, phone app | 60 true RMS, inrush, non-contact voltage, temperature |
| Accuracy 10% | 67 2% of reading | 33 2.5% of reading |
| Jaw opening 5% | 47 34 mm jaw | 33 30 mm jaw |
| Warranty 10% | 100 3-year warranty | 100 3-year warranty |
| Price 10% | 7 $429 | 46 $173.50 |
Specifications
| Fluke 375 FC | Extech EX655 | |
|---|---|---|
| Measurement | ||
| AC current (jaw) | 600 A | 600 A |
| DC current (jaw) | 600 A | 600 A |
| Flexible probe AC | 2,500 A | - |
| Voltage | 1,000 V | 1,000 V |
| Current accuracy | 2% of reading | 2.5% of reading |
| Jaw opening | 34 mm | 30 mm |
| Safety | ||
| CAT rating | CAT IV 600 V / CAT III 1,000 V | CAT III 600 V / CAT II 1,000 V |
| Features | ||
| True RMS | Yes | Yes |
| Inrush | Yes | Yes |
| LoZ mode | No | No |
| Non-contact voltage | No | Yes |
| Low-pass filter | No | No |
| Temperature | No | Yes |
| Phone app | Yes | No |
| Build | ||
| Weight | 395 g | 265 g |
| Warranty | 3 years | 3 years |