Three phase power is fun!!
Some equipment I was with when it was installed in the late 60's needed 3 phase power (before low power stuff) for operation. It also included a nice rotary machine (disk drive) that used three phase power as well. While the techs were there wiring it up, they actually tested to make sure that the phases were in order. They were, and all was fine. Later I found out that the equipment also had a phase sequence detector ahead of the motor relay to MAKE SURE that the phases were in the correct order. Pretty good design if you ask me.
Oh, yes all the 3 phase circuit breakers had the phases linked so if one tripped, others would as well.
That was 120-208 'Y' three phase. Then there is 120-0-120, 240, 240 "delta" three phase that has the "high" leg 208 volts above the "neutral" which isn't actually neutral, but the center of the other phase. It makes for interesting wiring if you think it is the other type as you smoke one of the three phases.
Live and learn.