It is stands for Residual Current Circuit breaker . The is essentially an electrical guard . This device is typically used at the doorway of a circuit. The function of this device is to stop current leakage.
আর,সি,সি,বি (RCCB) মানে রেসিডুয়াল কারেন্ট ব্রেকার
This device has 2 poles just in case just in case of single phase and 4 poles in case of three phase. It is has neutral connections where Neutral in and Neutral out are mentioned.
Connected to RCCB in MCB series. If a circuit or a load carries more current to the neutral than the quantity of current it carries through the is, then the device trips.
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MCB সম্পর্কে জানতে এইখানে ক্লিক
The amount of tripping current is written on the is. E.g., 30mA, 100mA, 300mA etc. If quite the quantity of tripping current applied to the is from theneutral or phase of a circuit leaks and goes to earth, then this device protects the circuit or the person from damage by tripping. The video below shows how and why RCCBtrips.
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