In the 3-phase distribution box, the MCCB is used as the main switch. Only Line terminals go through the MCBs. RCCB. 3 phase DB box wiring is an essential component of electrical installations in commercial and industrial buildings. Three-phase distribution boards are used in large factories, buildings, manufacturing units. Three-phase system can be described as the common method of alternating current power generation, transmission, and distribution. In this system, the current will pass through the three wires, and there will be one neutral wire for passing the fault current to the earth. A distribution board is also known as main breaker box, electric. (1) Power distribution from the primary main distribution board (distribution cabinet) to secondary distribution boards can be branched; that is, one main distribution board may supply power via multiple branch circuits to several secondary distribution boards. Whether in a home or an industrial facility, this box keeps your electrical setup organized, functional, and efficient.
[PDF Version]