The Fluke 360 is a compact microampere-range AC leakage current clamp meter (discontinued). Equipped with fully shielded anti-interference jaw, it delivers ultra-fine 1 μA resolution to capture tiny insulation leakage signals. It enables non-destructive testing of full grounding systems without power cut or conductor disconnection. The 40 mm wide jaw fits all types of flat ground busbars and multi-strand cables, with four auto-ranging modes covering microamp-level insulation degradation up to 60 A ground short-circuit faults. Weighing only 200 g, it runs up to 90 hours on a single CR2032 lithium battery, with auto power-off to extend service life. Fully compliant with international electrical safety standards, it is widely adopted for preventive insulation inspection in industry, PV, marine and building electrical systems, an efficient tool for fault tracing and safety acceptance.