The ABB XT1SQ3060AAA000XXX is a 60 A, 3-pole molded case circuit breaker (MCCB) rated for 600Y/347 VAC with a 22 kAIC interrupting capacity. This is the 100% rated version, meaning it can carry its full 60 A continuously without derating — a key distinction for feeder circuits powering constant loads like pumps or compressors where the breaker must not trip on sustained current below the nameplate. Panel-mounted construction suits it for distribution panels or motor control center (MCC) buckets where a DIN-rail breaker won't fit the bus.
The 60 A continuous rating (100% rated) means this breaker handles a full 60 A load indefinitely at 40 °C ambient, per UL 489. The 22 kAIC at 600Y/347 VAC is the maximum fault current it can safely interrupt — sufficient for most industrial secondary distribution panels where available fault current typically runs 10–18 kA. The 3-pole configuration covers three-phase loads; the 600Y/347 VAC rating means it's suitable for 480 V delta or 277/480 V wye systems where the line-to-neutral voltage is 277 V.