Do fuses and circuit breakers protect against power surges?
No. Over-current protection devices such as fuses and circuit breakers (whether thermal or magnetic) respond to heat or currents caused by down line faults. Over-current protection devices are too slow to react to transients because they are designed to protect against long-term over-voltages and faults. If they reacted to every power disturbance, we would be replacing fuses and resetting circuit breakers all day long.
Related Questions
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- Do fuses and circuit breakers protect against power surges?
