... voltageFrequencyRated short circuit breaking capcacityinstantaneous release typeSN67-636, 10, 16, 20 25, 32, 40, 50, 631, 2, 3, 4690230, 40050/604500C ... , 1001, 2, 3, 4690230, 40050/606000C, D Installation and size 20 amp miniature circuit breaker mcb