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Miniature circuit breakers (MCBs)

Electrical Technology · Grade 11 · about 40 minutes

Explain how an MCB trips on overload and fault, and select a suitable type.

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  • 9 sections of explanation, worked examples and diagrams
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Other lessons in this sub-strand

  1. Electrical hazards and the need for protection
  2. The principle of earthing
  3. Types of earthing systems
  4. Earth electrodes, conductors and lightning arresters
  5. Fuses and their operation
  6. Miniature circuit breakers (MCBs)
  7. Residual current devices (RCDs)
  8. Selecting and coordinating protective devices
  9. Installing and connecting protective devices