The current sensor can detect AC and DC, measure AC and AC, measure DC and DC, and need external power supply.
The current transformer can only measure AC, and AC 5A or AC1A when outputting signals, no external power supply is required.
Ordinary current transformers can only measure AC current. If the AC current transformer opens, it will generate high voltage. If it is serious, it will break through the line insulation and cause electric shock to threaten personnel safety. Therefore, when used, the secondary side cannot open the circuit, and when it is removed, it will be opened twice. The side must be shorted.
