The Quasistatic Single Phase Ideal Commuting Switch (or Ideal Commuting Switch) component models a three-terminal, single-pole, electrical switch that commutes a common terminal between a normally closed terminal () and a normally opened terminal (). The common terminal is controlled by a Boolean signal. When the input signal is false, the common terminal is connected to the normally closed terminal; otherwise, it is connected to the normally opened terminal.
To prevent singularities during switching, the opened switch has a (very low) default conductance and the closed switch has a (very low) default resistance . The limiting case is allowed, i.e., the closed resistance and open conductance can be exactly zero.
The model includes a Conditional heat port, but no temperature dependency.
Use with care: This switch is only intended to be used for structural changes, not for fast switching sequences, due to the quasistatic formulation.