... OL7 Series Residual Current Circuit Breaker(RCCB):Application: The product is used in AC50 / 60HZ two poles 230V, four poles 400V,rated current up ... the damage to equipment. The residual current operated circuit breaker can also function as overload and short-circuit protection and unfrequent changeover of ... ,16A,25A,32A,40A,63A,80A,100A2. Rated residual operating current: 0.03A, 0.1A, 0.3A.3. ...