A distribution board is not just an enclosure, but a comprehensive system in itself, consisting of earth link, busbar, neutral link, removable gland plates, pan assembly, etc. to enable effective power distribution. No electrical installation is complete without a distribution board and hence, DBs are found in every home, office, building, or outdoor electrical setup.
The main function of a distribution board is to enclose and provide the necessary mounting base to the DB accessories such as MCBs, RCCBs, Isolators, etc. The system as a whole is used to distribute the power supply evenly across various circuits in a controlled manner to avoid overloading and short circuits.
Due to their ubiquity, they are referred to by many names. Some of the common terms are distribution panel, panel board, electricity board, electrical panel board, distribution box, power distribution board, mcb board, power distribution box, mcb box, etc.
Press Fit manufactures distribution boards in various designs, dimensions, and sizes ranging from 1 Way To 16 Way to support a wide range of applications.
There are generally three types of distribution board:
They can also be classified into SPN (Single Pole Neutral) and TPN (Triple Pole Neutral) distribution boxes. The simple difference between SPN DB and TPN DB is their ability to support the number of phases in the power distribution system. SPN DB is used when a single-phase power supply is required, as with household appliances. While TPN is used where a three-phase power supply is required, such as in large industrial plants.
Distribution Boxes can easily be found in almost every home. They enable keeping a check on the power supply. Any abnormality in the power supply triggers the distribution system to cut off the circuit (via Circuit Breakers) to prevent damages and catastrophes. They can be used for both flush and wall mounting.
An abnormal power supply can damage expensive and heavy machinery in industrial plants. Heavy-Duty distribution boxes are required to be installed in industrial plants to prevent this from happening. With a TPN distribution board, individual circuits can draw power from circuit breakers and, if necessary, isolate the same circuits without interrupting the rest of the supply.