Chauvin Arnoux's F400 series of clamp meters are best suited for use in low voltage applications. Featuring 48mm jaws, the F401 clamp is ideally suited for use on a wide variety of conductor sizes and allows users to quickly carry out measurements of AC current without the need to break a circuit. It can measure AC current up to a limit of 1000A AC. This clamp meter is also suitable for carrying out both AC and DC voltage measurements, resistance measurements, continuity testing and temperature testing via the use of a compatible thermocouple.