AC Leakage Clamp Meter Hioki CM4003 is a specialized AC leakage clamp meter and leakage current clamp meter widely used by electricians, maintenance professionals, and technicians to detect and measure small leakage currents in AC electrical systems. Designed for high accuracy, it helps identify electrical faults, insulation problems, and equipment malfunctions that could lead to safety hazards or operational inefficiencies. Commonly used in electrical equipment maintenance, appliance testing, industrial machinery, and building maintenance, this Hioki CM4003 supports reliable diagnostics and safe, efficient operation of electrical systems. Application: Industrial Machinery, Building Maintenance, Electrical Equipment Maintenance, Appliance Testing.