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2. Circuit breaker - Wikipedia

   en.wikipedia.org/wiki/Circuit_breaker

   The thermal portion of the circuit breaker provides a time-response feature that trips the circuit breaker sooner for larger over-currents but allows smaller overloads to persist for a longer time. This allows short current spikes such as are produced when a motor or other non-resistive load is switched on.

3. Transient recovery voltage - Wikipedia

   en.wikipedia.org/wiki/Transient_Recovery_Voltage

   Examples of TRV waveshapes. A transient recovery voltage (TRV) for high-voltage circuit breakers is the voltage that appears across the terminals after current interruption. It is a critical parameter for fault interruption by a high-voltage circuit breaker, its characteristics (amplitude, rate of rise) can lead either to a successful current interruption or to a failure (called reignition or ...

4. Selectivity (circuit breakers) - Wikipedia

   en.wikipedia.org/wiki/Selectivity_(circuit_breakers)

   Faults in an installation are, for example, overload and short circuit. [1] [2] There are four ways in which selectivity is achieved: [3] Current selectivity: different breaking capacities; Time selectivity: time delay before tripping of a breaker; Energy based selectivity: analysis of the current waves

5. Recloser - Wikipedia

   en.wikipedia.org/wiki/Recloser

   During those 1.5 cycles, other separate circuits can see voltage dips or blinks until the affected circuit opens to stop the fault current. Automatically closing the breaker after it has tripped and stayed open for a brief amount of time, usually after 1 to 5 seconds, is a standard procedure. [5]

6. Inrush current - Wikipedia

   en.wikipedia.org/wiki/Inrush_current

   Inrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-load current when first energized, for a few cycles of the input waveform.

7. Residual-current device - Wikipedia

   en.wikipedia.org/wiki/Residual-current_device

   A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...