It is a 3-pole unit with front-face terminals and carries UL/CSA listing, so it is accepted in North American panel builds without additional agency review.
The TMF 60-600 A trip unit covers a wide adjustable range, so the same breaker can be set to protect a 60 A feeder or a 600 A downstream bus — useful for stocking one SKU across multiple panel sizes. The XT1H 125 frame indicates the maximum continuous current rating of the breaker body is 125 A; the trip unit's upper band of 600 A is the magnetic instantaneous setting, not the continuous rating. The continuous rating is governed by the lower end of the TMF range, so for a 125 A frame the actual continuous ampacity is 125 A, with the TMF providing adjustable short-circuit and overload protection up to 600 A magnetic pickup.
Front-face terminals simplify wiring in a crowded enclosure. The 3-pole footprint matches standard ABB XT1 cutouts, so swapping a failed unit or expanding a panel follows the same drilling template.