Fluke 381 Digital Clamp Meter
The Digital Clamp Meter Fluke 381 Allows one technician to do the job that would require two people. This remote display allows the user to clamp around a conductor, and detach the display. Furthermore, they can walk across the room to configure controls or remove protective equipment, all while watching real-time readings.
The iFlex® Flexible Current Probe (included) expands the measurement range to 2500 A AC while providing increased display flexibility. With a cord that runs 6', you can finally measure those tight spaces, awkward-sized conductors, and disorganized wires.

Fluke 381 Digital Clamp Meter
- Wireless technology allows the display to be carried up to 30' (9.15 m) away from the point of measurement for added flexibility without interference with measurement accuracy.
- iFlex™ flexible current probe expands the measurement range to 2500 A ac while providing increased display flexibility, the ability to measure awkward sized conductors, and improved wire access.
- CAT IV 600V, CAT III 1000 V safety rating.
- Integrated low pass filter and state-of-the-art signal processing allow for use in noisy electrical environments while providing stable readings.
- Proprietary inrush measurement technology to filter out noise and capture motor starting current exactly as the circuit protection sees it.
- The ergonomic design fits in your hand and can be used while wearing personal protective equipment.
- The removable magnetic display can be conveniently mounted where it is easily seen.
- The radio transmitter automatically turns off when the display is connected to the meter.
- Large, easy to read, backlight display automatically sets the correct measurement range so you do not need to change switch positions while taking a measurement.
- Safety conformance: IEC/EN 61010-1:2001, 1000V CAT III, 600V CAT IV.
Measurement capability
- 1000 A AC and DC current measurement with fixed jaw.
- 2500 A AC current measurement with iFlex flexible current probe.
- 1000 V AC and DC voltage measurement.
- True RMS AC voltage and current for accurate measurements of non-linear signals.
- Frequency measurement to 500 Hz with both jaw and iFlex.
- 60 kµ resistance measurement with continuity detection.