Miniature Circuit Breaker (MCB)
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MCBs can be installed in a distribution board or consumer unit in a similar way to fuses, and some boards can accommodate either. The operating mechanism of an MCB can be adjusted to trip at different currents, usually using an electromagnet and a bimetal strip. There are several types of MCBs, including A, B, C, D, K, and Z, with B, C, and D being the most common. These categories are often based on the MCB’s trip curve or tripping capacity. For example, type B MCBs are often used in residential properties or small-scale industrial units.
Description
A miniature circuit breaker (MCB) is an automatic electrical switch that protects circuits from damage caused by excess current, such as short circuits and overloads. MCBs are smaller than traditional circuit breakers, making them ideal for use in tight spaces. They are commonly used in domestic, commercial, and industrial settings to ensure the safe and efficient operation of machinery and other electrical systems.
- Bimetallic strip: A copper and steel strip that melts and interrupts the circuit during an overload
- Coil: Prevents short circuits
MCBs can be installed in a distribution board or consumer unit in a similar way to fuses, and some boards can accommodate either. The operating mechanism of an MCB can be adjusted to trip at different currents, usually using an electromagnet and a bimetal strip. There are several types of MCBs, including A, B, C, D, K, and Z, with B, C, and D being the most common. These categories are often based on the MCB’s trip curve or tripping capacity. For example, type B MCBs are often used in residential properties or small-scale industrial units.