The S120 current clamp is a high performance AC Clamp on current transformer probe with excellent transformation and low phase shift. The high quality magnetic permalloy core and uniform windings provide for accurate measurements up to 3000AAC/2000AAC/1000AAC/500AAC. The "ring type" jaw permits good magnetic conduction and cable positionings. Provide excellent RMS capabilities and reliable signal reproduction. FEATURES UL, CE CNAS mark Frequency 10-2MHz; Holding wire diameter: 120mm Conforms to EN 61010, 600V CAT III Low phase shift for power measurement Industrial design & beautiful appearance High content nickel metal permalloy core Measurement range of 1mA to 3000A AC Transformation ratio: 1000:1, 2000:5, 3000:5 Improved ergonomic design & easy operation High precision 0.1% for current measurement; Designed for DMMs, recorders, loggers, oscilloscopes, power and harmonic meters