This example shows the Ideal Switching device solution method of the Powergui block to model a circuit breaker.
G. Sybille (Hydro-Quebec)
The use the Ideal Switching device solution method allow to simulate a circuit breaker without snubber and connected in series with an inductive circuit.
Zoom on breaker current and note the "exact" zero current when the breaker is open.
This solution technique introduced in R2008b is available with continuous solvers. To enable this option, check the "Enable use of ideal switching devices" parameter of the powergui block.