The ABB XT4VU3225AFF000XXX is an XT4V 250 TMF molded case switch — a disconnect and isolation device for motor branch circuits, panel feeders, and distribution loads up to 250 A frame size. The TMF designation indicates a thermal-magnetic trip mechanism, giving it overcurrent and short-circuit protection in a single compact package.
The 250 A TMF trip unit covers motor loads, resistive heating banks, and general distribution circuits where a coordinated disconnect with integral overcurrent protection is required.