The Power of Zero Phase Current Transformers Precision

For electrical safety in power distribution, residual-current protective devices play an indispensable role. The Zero-Phase Current Transformer (ZCT) is the core sensing component inside residual-current circuit breakers, GFCI receptacles and leakage protection power strips. Its fundamental principle is widely understood, yet its inherent unbalanced residual output frequently becomes a hidden root cause of nuisance tripping…