Simply connect to a tester or recorder to easily measure large currents. CE mark compliant CAT III 600V. For more accurate waveform recordings and analysis of harmonic signals, etc. Accuracy guaranteed for 1 year, or opening and closing of the clamp sensor 10,000 times. Rated Current: AC 10/20/50/100/200/500 A. Accuracy: +/-2 percent rdg. +/-1 percent f.s. (45 to 66Hz). Frequency characteristics: Add to amplitude accuracy for frequencies from 40 to 1kHz: +/-6 percent rdg. (at 10A and 20A range). +/-3 percent rdg. (for 50A range and above). Output rate: 0.2V AC f.s. (Connect to a voltage input device providing a high input impedance of milliohm). Max. current input: (For 40Hz to 100Hz: 100 percent, and for 100Hz to 1kHz: within 50 percent of derating). 150A RMS continuous (10/20/50A ranges). 400A RMS continuous (100/200A ranges). 650A RMS continuous (500A range). Max. circuit voltage: 600Vrms (Insulated conductor). Measures: 3-1/16" width by 7-25/64" height by 1-3/8" depth, 1-51/64" diameter, cord length: 3 meter.