The Fluke i400s Current Clamp is compatible with any instrument capable of ac millivolt measurements. and can accept a standard BNC connector, and has an input impedance of greater than or equal to 1 MΩ in parallel with a maximum of 47 pF. The Current Clamp can also be used with digital multimeters using a BNC-to-banana jack adapter.
The Fluke i400s is specially designed to offer maximum utility in a compact shape and is the only current clamp available with a CAT IV 600 V / CAT III 1000 V safety rating.
Fluke i400s current clamp extends the current ranges of digital multimeters, power quality analyzers, and portable oscilloscopes.
FLUKE i400s Specifications |
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| Nominal current range | 40 A Range | 0.5 A to 40 A |
| 400 A Range | 5 A to 400 A | |
| Basic accuracy | 40 A Range | 2% + 0.015 A (45-400 Hz) |
| 400 A Range | 2% + 0.04 A (45-400 Hz) | |
| Phase shift | 40 A Range | |
| 0.5 to 1 A | Unspecified | |
| 1 A to 5 A | 4° | |
| 5 A to 10 A | 3° | |
| 10 A to 20 A | 3° | |
| 20 A to 40 A | 2° | |
| 40 A to 400 A | NA | |
| 400 A Range | ||
| 0.5 to 1 A | NA | |
| 1 A to 5 A | NA | |
| 5 A to 10 A | Unspecified | |
| 10 A to 20 A | 2° | |
| 20 A to 40 A | 2° | |
| 40 A to 400 A | 1.5° | |
| Typical bandwidth | 40 A Range | 5 Hz – 10 kHz |
| 400 A Range | 5 Hz – 10 kHz | |
| Output level(s) | 40 A Range | 10 mV/A |
| 400 A Range | 1 mV/A | |
| Crest factor | 40 A Range | ≤ 3 |
| 400 A Range | ≤ 3 to 300 A | |
| ≤ 2.5 to 400 A | ||
Safety Specifications |
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| Safety | CAT IV, 600 V, CAT III, 1000 V | |
| Maximum non-destructive current | 1000 V AC | |
| Mechanical and General Specifications | ||
| Warranty | 1 year | |
| Maximum conductor size | 32 mm | |
| Output cable length | 2.5 m | |
| BNC adapter | Yes | |
| Dimensions | 150 x 70 x 30 mm | |
| Weight | 114 g | |






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