The Amprobe ACD-45PQ is a compact digital clamp meter capable of measuring power, energy and power factor on a single and three-phase systems (balanced and unbalanced). The ultra-slim jaw design allows the user to clamp around conductors in confined and difficult to reach places.The Amprobe ACD45PQ Measures AC/DC Voltage up to 600V, AC Current up to 600A, Resistance, and Frequency. The ACD-45PQ meter also features audible continuity, auto power off, data hold, and a large easy to read LCD display with backlight. The meter includes Voltage overload protection for all functions up to 600V AC/DC and is rated Safety CAT III 600V.