What the 600 A rating means for your panel
The ABB XT5LU360BEFF000XXX is a 600 A, 3-pole Tmax XT5L circuit breaker from the Tmax XT5L series, fitted with an Ekip DIP LS/I trip unit. The 600 A continuous rating sets the thermal limit for the main power path through the breaker — sized for a 600 A feeder or a large motor circuit, it will hold that current indefinitely without tripping on overload. The 3-pole construction covers three-phase systems; the front terminals and lever operating mechanism make it a straightforward retrofit into existing UL/CSA switchboards where the operator needs a local handle, not a remote motor operator.