Circuit Protection3 min read
MCB Ratings Explained: What Do 6A to 63A Mean?
Learn what common MCB ratings from 6A to 63A mean, how load current and cable capacity affect selection, and why a larger breaker is not always safer.
Read guide 6 Sept 2026
2 guides tagged with this topic.
Learn what common MCB ratings from 6A to 63A mean, how load current and cable capacity affect selection, and why a larger breaker is not always safer.
Understand common reasons an MCB trips, including overloads, short circuits, appliance faults and wiring problems, plus the safe next steps.