What the ratings mean for your panel
The ABB XT4HU3200AFF000XXX is a 200 A, 3-pole molded case circuit breaker from the XT4H series, rated for 600 VAC. The 65 kA interrupting capacity at 600 V means it can safely clear a bolted fault up to that level without rupturing or cascading damage upstream — critical for high-fault utility feeds or transformer secondaries where available fault current runs high. Panel-mount construction means it bolts directly to a backplate or enclosure sub-panel, not a DIN rail; plan for the cutout and drilling pattern during enclosure layout.
