Molded case circuit breaker — XT2H 125 A frame
The ABB XT2HU3030AAA000XXX is a 3-pole molded case circuit breaker (MCCB) from the XT2H series, built on a 125 A frame with a TMF (thermal-magnetic fixed) trip unit adjustable from 30 to 400 A. It carries UL and CSA approvals, making it suitable for North American panelboards and distribution equipment where branch-circuit protection is required. The 125 A frame size supports a 30–400 A continuous current range, which means the trip unit setting is field-adjustable to match the load without changing the breaker body — useful when the same panel layout must serve different branch ratings during commissioning.
The XT2H series mounts in standard panelboard or switchboard cubicles via the fixed-connection rear terminals. The 3-pole configuration and TMF trip unit make it a drop-in replacement for existing 125 A frame MCCBs in UL 489 listed distribution panels, provided the busbar spacing matches the pole centers.