Dent 2-150A clamp-on current transformer - .7" (18mm) round opening. Range: 2 – 150A All of Dent’s current transformers are shunted and therefore safe compared to the other industry standard. Electrical Specifications Current Range: .1A to 150A AC, continuous cycle Output Signal: 333 mV @ 150A Accuracy : +/-1.5% of Reading @ 80A-150A :1% of Reading @ 20A-80A Frequency Range : 40 Hz to10 kHz Working Voltage : 600Vrms Mechanical Specifications Operating Temperature: 14º to 131ºF(-10º to 55ºC) Storage Temperature: -40º to158ºF(-40º to 70ºC) Temperature Influence: <0.1% per 10ºK Maximum Conductor Size: .78"(20mm) Dimensions: 5.47x2.00x1.18"(139x 51 x 30 mm) Weight: 6.5oz (180g) Colors : Dark gray handles, red jaw color Safety Specifications Electrical: 30 V max common mode between output and ground 3 kV 50/60 Hz dielectric for 1 min Electromagnetic Compatibility (CE Mark): EN 50081-1Class B EN50082-2 Electrostatic discharge IEC 1000-4-2 Radiated field IEC 1000-4-3 Fast transients IEC1000-4-4 Magnetic field at 50/60Hz IEC1000-4-8