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Miniature Circuit Breaker (MCB)
Click HereA miniature circuit breaker (MCB) automatically switches off electrical circuit during an abnormal condition of the network means in overload condition as well as faulty condition. Nowadays we use an MCB in low voltage electrical network instead of a fuse. Eaton MCB’s are with B, C & D curves, each signifies the overload’s it can withhold & can operate.
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Residual Current Circuit Breaker (RCCB)
Click HereAn RCD is a sensitive safety device that switches off electricity automatically if there is a fault. This device is basically an electrical wiring device whose function is to disconnect the circuit whenever there is leakage of current flow from the human body, or the current flow is not balanced between the phase conductors. It is the best device for detecting and taking care of electrical leakage currents, so it gives protection against electric shock or electrocution caused by direct contacts. RCCB is usually used in series with an MCB. The MCB protects the RCCB from over-current and short-circuits current. Both neutral and phase wires are connected through an RCCB. The combination of these two devices provides a very effective form of protection from electric shock, and it is widely used for protection against a leakage current of about 30,100 and 200mA.
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Surge Protection Devices (SPD)
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