It is a 3-pole, fixed-configuration breaker carrying UL and CSA approvals, meaning it is accepted for panelboard and switchboard installations in North American markets. The TMF trip provides an adjustable magnetic pickup for short-circuit protection and a fixed thermal element for overload — a common choice for feeder and motor branch circuits where coordination with downstream devices matters.
Lifecycle stage is listed as current, meaning this order code remains a standard production item from ABB. No last-time-buy or phase-out notice is in effect for this variant.
The 125 A frame accommodates the TMF trip block adjustable from 100 to 1000 A — that adjustable magnetic range gives the specifying engineer headroom to set short-circuit pickup above the inrush of a large motor or transformer without sacrificing conductor protection. The fixed thermal element tracks the 100 A minimum continuous current; the breaker itself is sized for a 125 A continuous bus.