The ABB XT4XQ3060GFF000XXX is a 250A breaking part from the XT4X series, configured as a 3-pole unit with F F (fixed front) terminations, carrying UL and CSA approvals. It is the interrupting section of a molded case circuit breaker — the component that clears faults — not the complete breaker assembly.
Rated 250 A, this breaking part fits inside the XT4 molded case frame. The 3-pole F F designation means it switches three phases and uses fixed-front terminals — the line and load connections are bolted, not plug-in. UL and CSA marks tell you it is accepted for US and Canadian panel builds without additional agency review.