Feature: 1. The product can be used for industrial power testing such as AC current, high order harmonic current, phase, electric energy, power factor, ect. 2. Using CT technology, and with circular large diameter structure design, easy to carry, easy to install. 3. This product adopts silicon steel core, it is more accurate to test large current, small in size and easy to use. 4. Clamp shaped structure, no need to disconnect the tested circuit, simple and fast operation, safe and reliable. 5. This product is a high accuracy AC current transformer, which is widely used in industry and power measurement, and can meet your different needs. Specification: Item Type: Clamp Current Transformer Model: ETCR070A Material: ABS+silicon steel Application: Industrial control devices, oscilloscopes, harmonic analyzers, double clamp ground resistance testers, cable fault testers, power quality analyzersInput Current Range: 0A~1000A Output Signal: 1A, 5A Jaw Size: Approx. 70mm / 2.8in Safety Grade: CATⅢ600V Environmental Protection: RoHS Working Temperature: -15°C~60°C Transformer Model Input Current Output Signal Frequency Secondary Load Accuracy Class ETCR070A 500A 1A 40Hz~1kHz ≤2.5VA 0.5 1000A 1A ≤2.5VA 0.5 200A 5A ≤5VA 2 500A 5A ≤5VA 0.5 1000A 5A ≤5VA 0.5 . Package List: 1 x Clamp Current Transformer