YMWL2-63 63A RCCB 2P. SpecificationsYMWL2-63 Residual Current Operated Circuit Breaker without ... two poles 230V, four poles 400V,rated current up to 63A, It can automatically and immediately cut off power supply once ... is suitable for industry, business, building, residence ,etc. YMWL2-63 63A RCCB 2P.