Question

Write the full form of M.C.B

Answer 1

Hint: During any abnormal condition in the electrical network, such as overload & short circuit conditions, MCB switches OFF electrical circuits automatically. There are approximately six different MCB types, namely A, B, C, D, K and Z. The MCB works to cut the current off as soon as possible upon detection of the extra current flow. It is Generally used for the household Circuiting.

Complete answer:
MCB's Full Form is a miniature circuit breaker. It is an electric switch that automatically works in a circuit to detect excessive current flow. Because of its accessibility and safety factors, MCBs replaced the use of fuses in circuits. The MCB does not need to be replaced after a short circuit, unlike the fuse. For it to work again, you have to reset the MCB.
For the MCB to work, a chain of responses is lined up. The MCB has a bimetallic cable, as you have read. In the event of a current overflow or overheating problem, this metal wire collapses. In return, this opens up a latch that is linked to the mechanism of operation. This then opens the MCB and the circuit is shut off by the MCB. It hardly takes 2 seconds for the entire action to be completed. Manual help is required for the MCB to start functioning again after the process is completed. To reconnect it to the power supply, just switch it on.

Note:
The overflow of current is more sensitive to MCBs. In low voltage networks, it immediately detects the overflow automatically and immediately restores supply. MCBS does not have that hassle while fuses need to be rewired. It does not lag when the need for the circuit to break is high, avoiding severe accidents.