1Made of permalloy, it uses double layer shielding technology, and the influence of external magnetic fields is minimal, ensuring high accuracy, high stability, and high reliability for year round uninterrupted measurement. 2Using the new CT technology, it adopts a portable clamp shaped design, non contact measurement can be performed without disconnecting the line under test, which is safe and fast. 3A variety of combinations, it can be connected to phase detection analyzers, industrial control devices, data loggers, oscilloscopes, harmonic analyzers, power quality analyzers and high accuracy digital multimeters. 4Support output interface, it supports BNC plug, 4.0mm double banana plug, 3.5mm audio plug and bare wire tap as an excuse, which can meet your various needs. 5Wide range of application, it is suitable for high accuracy AC leakage current, high order harmonic current, phase, electric energy, power, power factor and other detection. item type: current transformerModel: ETCR040Material: ABS+PermalloyUses: It is suitable for AC leakage current detection, and is widely used in electric power, communications, meteorology, railways, oil fields, construction, measurement, scientific research and teaching units, industrial and mining enterprises and other fields. Range Resolution Accuracy Grade Phase Error Transformation Ratio 0.00mA40A AC 0.01mA 0.5 2 800:01:00 Function It is suitable for high accuracy detection of AC leakage current, high order harmonic current, phase, electric energy, power, power factor, etc. Model ETCR040 Measuring Range 0.00mA-40A AC Resolution 0.01mA Accuracy Class 0.5 Phase Error 2 Transformation Ratio 800:01:00 Reference Load 120 Jaw Size Approx. 35x40mm / 1.4x1.6in Quality Approx. 190g / 6.7oz Output Interface BNC Plug/4.0mm Double Banana Plug/3.5mm Audio Plug/Bare Wire Tap (Optional), Cable Length Approx. 1.5m / 4.9ft Working Frequency 45Hz-100kHz Dielectric Strength AC 3700V/Rms (Between Core And Shell) Security Level CAT600V Output Method Inductive Current Output Working Temperature and Humidity -15-50; Below 80%rh Approx. 190g / 6.7oz