Fuses and circuit breakers are both critical components of electrical systems designed to interrupt circuits immediately after overcurrent or overload, and there are some key differences in the way they operate. Fuse is a kind of metal sheet, when overload and overcurrent will be blown, so it is also called fuse; The circuit breaker has an internal switch that will trip off the circuit when overcurrent is generated in the circuit due to overload or short circuit.
A fuse is a circuit protection device used to protect a circuit from current or overload hazards, usually made of porcelain, glass, or porcelain. Fuses are metal strips made of copper, silver, aluminum, zinc or alloys that immediately begin to melt when overload occurs, disconnecting the circuit from the input power supply.
Circuit breakers are devices that automatically, manually or remotely control (turn on or off) circuits in normal or fault conditions (such as overcurrent, short circuit, etc.). In circuit breakers, electromechanical switches and relay mechanisms trip when unsafe current (overload or short) attempts to flow through the circuit connected through the breaker. In this way, it protects the connected circuit by reducing the influence of the power supply on the connected circuit during a failure, such as overload or short circuit overcurrent.
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