1GYL8 Residual Current Circuit Breaker is suitable to the circuit of AC 50/60Hz, rated voltage 230V for 2 poles and 400V for 4 poles, and rated current up to 63A. 2When people come across the electric shock or the leakage current of the electrical network exceeds the fixed value, this product can cut off the fault current in short period so as to protect person and the equipments. It also can be used in the infrequ 3The circuit breaker is suitable for industry, commerce, high-rise building, household and other kinds of places. 4In compliance with IEC/EN61008.1. Protection rating IP20. 5Bilateral busbar wiring capabilities to adapt to the wider use of premises.