Question

what is the full form of MCB?​

Answer 1

"Miniature Circuit Breaker" is the complete form of MCB. It's a type of electronic switch that operates on its own. By identifying the high quantity of current flow in the circles, it can discover a problem occurring inside a circuit. It can break the loop at any time if there is a big quantity of power available in the loop.

Explanation:

• MCBs are designed to protect against overcurrent and overheating faults.
• When the current exceeds the set limit, the MCB automatically shuts down and the loop is broken.
• To restart the circuit, the MCB must be manually switched on.
• The MCB will trip in $2$ seconds to $2$ minutes if the circuit overheats.
• In motor feeders, MCBs of up to $100Amps$ are employed.
• When compared to fuses, MCB handling is more easier for both electrical devices and humans.
• In an MCB, the faulty wire returns to its original location, making fault detection considerably easier.
• It provides a better interface when using a knob.
• Because MCBs may be reused, they are less expensive than fuses.
• The current sensitivity of the MCB is substantially higher.
• To restart it, users must push the button.
• Fuse boxes are frequently utilized in place of MCBs.
• The MCBs, on the other hand, are a better choice because they must be reset by users before they may work again. It's made to guard against overheating-related problems.

Answer 2

MCB full form is miniature circuit breaker

MCB

• MCB Stands for miniature Circuit breaker
• It is an electric protection device
• It is current based device
• It has over current protection
• There are two type of Protection by MCB
• Short Circuit Protection
• Over Current/ Heating Protection
• During Short Circuit protection MCB operates between few milli seconds to few seconds
• During Over Current/ Heating Protection , MCB operates in few minutes
• Magnetic coil and plunger is used for Short circuit protection
• Bimetal is used for over current/heating protection
• MCB has a knob to reset once operated
• Few MCB comes with mid trip feature.
• MCB know mid position indicates that MCB operated because of a fault.
• MCB knob at bottom position indicates that MCB is switched off Manually
• MCB has Types B . C and D
• MCB are manufactured as per standard IEC 60898
• ISI Marks on MCB is mandatory in INDIA.