Three-phase terminator that draws no current
Simscape / Electrical / Connectors & References
The Open Circuit (Three-Phase) block models a three-phase connection that draws no current on any of the three phases.
Behavior changed in R2019b
This block is no longer required. Starting in R2019b, the restriction that disallowed unconnected conserving ports in Simscape™ models has been lifted. Now, if you leave a conserving port unconnected, the physical network sets all the Through variables at this port to 0. However, you can still use terminator blocks to improve diagram readability.
There are no plans to remove the terminator blocks. All the existing models using these blocks work the same as in previous releases.