225 A thermal-magnetic protection, panel-mount, current production
The ABB XT4HU3225AFF000XXX is a 3-pole molded case circuit breaker rated 225 A continuous, with a 65 kAIC interrupting capacity at 480 VAC. The thermal-magnetic (TMF) trip unit provides fixed overload and short-circuit protection — no interchangeable trip modules, so the 225 A rating is locked at order. Panel-mount footprint suits retrofit into existing switchboards or new MCC builds where DIN-rail isn't the standard.
What the 65 kAIC rating means for your panel
For branch circuits downstream with lower fault levels, you may be able to step down to a lower AIC frame — but at 225 A, this is likely a main or large feeder breaker.