Feature: 1. With clamp shaped structure, no need to disconnect the tested circuit, convenient to carry, easy and fast to operation. 2. Using CT technology, circular large diameter structure design, with small size, and easy to install, to meet your different needs. 3. The clamp current sensor is a high accuracy AC current transformer, which can be used with confidence. 4. The product is made of high quality ABS and silicon steel core material, durable, safe and reliable. It is more accurate to test large current. 5. This product is widely used in industrial control devices, oscilloscopes, harmonic analyzers, cable fault testers, etc. Specification: Item Type: Current Transformer Model: ETCR050A Material: ABS+silicon steel core Application: Industrial control devices, oscilloscopes, harmonic analyzers, double clamp ground resistance testers, cable fault testers, power quality analyzer Transformer Model Input Current Output Signal Frequency Secondary Load Accuracy Class ETCR050A 300A 1A 40Hz~1kHz ≤2.5VA 0.5 500A 1A ≤2.5VA 0.5 600A 1A ≤2.5VA 0.5 300A 5A ≤5VA 0.5 500A 5A ≤5VA 0.5 600A 5A ≤5VA 0.5 Input Current Range: 0A~600A Output Signal: 1A, 5A Jaw Size: φApprox. 50mm / 2inSafety Grade: CATⅢ600V Environmental Protection: RoHS Working Temperature: -15°C~60° . Package List: 1 x Current Transformer