The current sensor CT130 is actually a standard current converter which consists of three precisioncurrent transformers (CT)

The current sensor CT130 is actually a standard current converter which consists of three precision current transformers (CT), a precise residual current transformer (RCT) and a processing circuit with current range: 1A/5A, and 5A is recommended. It should be used incorporating with standard protective current transformers (3CTs + 1RCT).    CT  : 1A/5A    RCT: 1A/5A Notes:    1.CT130A: without RCT, earth protection not supported    2.CT130B: with RCT, earth protection supported    3.Standard length of cable: 1.5 meters, otherwise specified

Current Sensor