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The Fluke i410 and i1010 are AC/DC current clamps that allow non-invasive current measurement by clamping the jaw around a single conductor. Both models output a 1 mV per amp signal suitable for connection to a digital multimeter or oscilloscope, extending the current measurement capability of any instrument with a millivolt input to ranges far beyond what its internal current inputs allow.
These clamps measure both AC and DC current — a distinction that matters in applications where the standard AC-only clamp meter falls short. The i410 covers 1 A to 400 A in both AC RMS and DC, with usable range down to 0.5 A. The i1010 extends coverage to 600 A AC RMS and 1000 A DC, with usable range down to 0.5 A. DC current measurement is essential for solar PV installations, battery and energy storage systems, EV charging infrastructure, and DC motor drive work where conventional CT-based AC clamps cannot read the signal at all.
ValueTronics stocks, tests, and ships test and measurement equipment from a 20,000 square foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Inventory is physically present, professionally handled, and verified by our technicians before it leaves the facility — not drop-shipped from a third-party warehouse and not relisted from another distributor's catalog. This direct stewardship is what allows us to commit to specific ship dates, document condition accurately, and stand behind every transaction.
The Fluke i410 and i1010 share the same AC/DC clamp architecture, 1 mV per amp output ratio, 600 V CAT III safety rating, and double-insulation construction. They differ in maximum current range, accuracy specification, and bandwidth — the two specifications that determine which model fits a given application.
The i410 is the 400 A model — adequate for most single-phase residential, commercial, and light industrial work, automotive 12 V/24 V/48 V circuits, and bench-level power electronics characterization. The i1010 extends to 1000 A DC and 600 A AC, addressing three-phase industrial loads, large EV charging currents, traction motor currents, and high-current DC bus measurement in solar and energy storage applications.
Each new model is its own dedicated product page with condition-matched pricing. Use the comparison table to confirm the current range, accuracy, and bandwidth that fit your application, then proceed to the model-specific page for inventory and ordering.
Beyond current range, the accuracy difference is the most commercially meaningful distinction. The i1010 specifies 2.0 % + 0.5 A on DC and on AC up to 400 Hz, compared to the i410's 3.5 % + 0.5 A on the same parameters. For applications where current measurement feeds into efficiency calculations, motor characterization, or any documented measurement, the i1010's tighter accuracy reduces the uncertainty budget materially even when the measured currents fall well within the i410's range.
Bandwidth also differs: 3 kHz for the i410, 10 kHz for the i1010. The wider i1010 bandwidth captures faster current transients and harmonics, which is relevant for variable-frequency drive output current analysis, inverter switching characterization, and any measurement where harmonic content above 3 kHz carries information. For 50/60 Hz line measurements and slower DC applications, the i410's 3 kHz bandwidth is sufficient.
| Model | Specified AC Current Range | Specified DC Current Range | DC Accuracy |
|---|---|---|---|
| i410 | 1 A – 400 A ac rms | 1 A – 400 A dc | 3.5 % + 0.5 A (0 A – 400 A) |
| i1010 | 1 A – 600 A ac rms | 1 A – 1000 A dc | 2.0 % + 0.5 A (0 A – 1000 A) |
Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.
| General Specifications | Value |
|---|---|
| Operating Temperature | -10 °C to +50 °C (14 °F to 122 °F) |
| Storage Temperature | -20 °C to +60 °C (-4 °F to +140 °F) |
| Relative Humidity | 0 % to 95 % (0 °C to 30 °C); 0 % to 75 % (30 °C to 40 °C); 0 % to 45 % (40 °C to 50 °C) |
| Altitude, Operating | 0 m – 2000 m |
| Altitude, Non-operating | 0 m – 12000 m |
| Battery Type | 9 V (alkaline) NEDA 1604 IEC 6F22 |
| Battery Life | 60 hrs typical (continuous with alkaline) |
| Safety | Double Insulation, 600 V rms, CAT. III |
| Current x Hz Product | ≤ 240,000 |
| Output Signal | 1 mV per amp dc or ac |
| Working Voltage | 600 V rms, CAT. III maximum at input |
| Maximum Conductor Size | 1 ea. 30 mm (1.18 in.) diameter; 2 ea. 25 mm (0.98 in.) diameter |
| Load Impedance | ≥1 MΩ, ≤100 pF |
| Temperature Coefficient | +/-(0.05 x accuracy per °C) (0 °C – 18 °C, 28 °C – 50 °C) |
| Size | 209 mm x 78 mm x 48 mm (3.09 in. x 8.21 in. x 1.87 in.) |
| Weight | 0.5 kg (17.6 oz.) |
| Current Specifications | i410 | i1010 |
|---|---|---|
| Specified Current Range | 1 A – 400 A ac rms *; 1 A – 400 A dc | 1 A – 600 A ac rms *; 1 A – 1000 A dc |
| Usable Current Range | 0.5 A – 400 A | 0.5 A – 1000 A |
| DC Accuracy (zero adjusted, conductor centered) | 3.5 % + 0.5 A (0 A – 400 A) | 2.0 % + 0.5 A (0 A – 1000 A) |
| AC Accuracy | 3.5 % + 0.5 A, 45 Hz – 400 Hz, Crest Factor ≤ 3. (0 A – 400 A) | 2.0 % + 0.5 A, 45 Hz – 400 Hz, Crest Factor ≤ 3. (0 A – 600 A); 3.0 % + 0.5 A, 400 Hz - 2 kHz sine wave. (0 A – 600 A) |
| Bandwidth | 3 kHz | 10 kHz |
| * With a true-rms voltmeter, the minimum ac current is limited to the low end of the specified mV ac range. |
Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
Fluke
Condition
New
Manufacturer
Fluke
Amps
400 A
Volts
600 V
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