The Fluke i400s AC current clamp with BNC output extends the functionality of portable oscilloscopes or power quality meters to measure up to 400 A AC. Take accurate current readings without breaking the circuit. Soft non-slippery over molded handle. Two ranges: 40 A and 400 A, 10 and 1 mV/Amp output CAT III 1000 V, CAT IV 600 V safety rating. Compatible with most Fluke multimeters.