A main distribution board (MDB) (or electrical distribution board)

A main distribution board (MDB) (or electrical distribution board) is an electrical enclosure that groups together circuit breakers and switches to control the different electrical circuits of a building or apartment. Its main function is to distribute electrical power safely and systematically.

https://youtu.be/UBERduCp3Wo?si=s_DgfJA7GrpL-NDz

It includes components such as:

• The Main Circuit Breaker

• Sub-Circuit Breakers (Miniature Circuit Breakers - MCB)

• Copper Busbars (distribution bars)

• Measuring Instruments (meters)

• Neutral Lines (or Neutral Busbar)

• Indicator Lights (pilot lamps)