
An MCB (Miniature Circuit Breaker) and an isolator are both electrical safety devices, but they serve different purposes:
MCB (Miniature Circuit Breaker):
Function: It is designed to automatically disconnect the circuit in the event of an overcurrent (due to overload or short circuit).
Protection: It provides protection for the circuit and connected devices by preventing damage due to excessive current.
Operation: It trips automatically when the current exceeds the rated value for the specific time, restoring the circuit once the fault is cleared.
Usage: Primarily used for overload and short circuit protection in domestic, commercial, and industrial electrical systems.
Isolator:
Function: An isolator is a manual switch used to disconnect a part of the electrical circuit or equipment from the power supply, ensuring it is completely isolated for maintenance or safety purposes.
Protection: It does not protect against over current; it only serves as a means to safely isolate parts of a circuit or system.
Operation: The isolator is operated manually and ensures that no current is flowing through the circuit before performing maintenance or repair work.
Usage: Typically used in industrial systems or high-voltage equipment for safe isolation during maintenance, repair, or shutdown.
In summary, the MCB is a protective device that responds automatically to over current conditions, while the isolator is a manual disconnecting switch that isolates the circuit for safety, often during maintenance. And as always, have a nice Solar Day
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