Fluke
325
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Find on AmazonModel: 325
Important limit: Clamp jaw measures a maximum of 400 A, below the 600 A or 1000 A of larger Fluke clamps
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Specifications checked November 5, 2026. Full product details
Fluke 325 True-RMS Clamp Meter
A true-RMS 400 A clamp meter for commercial and residential troubleshooting, with AC/DC current and voltage, resistance, capacitance, frequency and temperature.
| AC current | 40.00 A / 400.0 A; accuracy 2% ± 5 digits (45 Hz to 65 Hz), 2.5% ± 5 digits (65 Hz to 400 Hz) |
|---|---|
| DC current | 40.00 A / 400.0 A; accuracy 2% ± 5 digits |
| AC voltage | 600.0 V; accuracy 1.5% ± 5 digits |
| DC voltage | 600.0 V; accuracy 1.0% ± 5 digits |
| Resistance | 400.0 Ω / 4000 Ω / 40.00 kΩ; accuracy 1.0% ± 5 digits |
| Continuity | ≤ 30 Ω |
| Capacitance | 0 to 100.0 μF / 100 μF to 1000 μF |
| Frequency | 5.0 Hz to 500.0 Hz |
| AC response | True-RMS |
| Contact temperature | -10.0 °C to 400.0 °C (14.0 °F to 752.0 °F) |
| Display | Backlit, with data hold and Min/Max |
| Max wire diameter | 30 mm (600 MCM) |
| Size and weight | 207 x 75 x 34 mm, 283 g |
| Safety rating | CAT III 600 V, CAT IV 300 V |
| Warranty | Two-year |
From manufacturer documentation, checked November 5, 2026. Spotted an error? Tell us.
A basic True RMS clamp meter rated CAT III 600V and CAT IV 300V that measures AC current to 400 A, AC and DC voltage to 600 V, resistance and continuity; it doesn't measure DC current.
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A 4,000-count True RMS clamp meter that measures AC and DC current to 400 A, voltage to 600 V and DC microamps, with non-contact voltage detection in the jaw and a thermocouple for temperature.
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A 6,000-count True RMS clamp meter that measures AC and DC current to 600 A and voltage to 1000 V, with a low-impedance mode and non-contact voltage detection in the jaw.
Check package and model options
