Molded case breaker, 60 A, 22 kAIC — panel-mount fit
The ABB XT1SU3060AAA000XXX is a 60-amp, 3-pole molded case circuit breaker rated for 600Y/347 VAC with a 22 kAIC interrupting capacity. The 80% rated version means it carries 60 A continuously in a panel designed for 80% loading — standard for feeder circuits where the breaker is not the sole limiting device. Panel-mount construction suits it for distribution panels, switchboards, or OEM enclosures where a DIN-rail footprint is not available.
What the 22 kAIC rating means for your panel
That is a solid intermediate rating — enough for most secondary distribution panels fed from a 500 kVA or smaller transformer, but not enough for a main service entrance where available fault current may exceed 65 kA.