Yes, that is correct for a single pole operated circuit breaker.
We run one trip wire out from the control building to the circuit breaker from each protection. This is then jumpered to the trip solenoid for each phase.
We run three open wires from the point on wave relay to the circuit...
It is possible to use a mechanically staggered three pole operated circuit breaker for point on wave opening of a reactor, however not ideal as the same circuit breaker can't be used for point on wave closing.
For a three pole operated CB you most likely would use one of the other solenoids.
I...
