The 3-pole configuration simultaneously switches all three phases in a three-phase power system.
Integration Note
The 3-pole block occupies the same cutout as other XT4V breakers, so swapping from a different trip rating within the series requires no panel rework. Wire terminations accept copper or aluminum conductors; torque values per the nameplate chart. The TMA dial is accessible with the front cover closed — adjust the thermal setting without breaking the seal.