It's the disconnect and branch-circuit protection block in a panel — sized for motor or distribution duty where you need a compact 3-pole frame.
No phase-out notice or last-time-buy date is documented.
What the 3-pole rating means for fit
Three poles means this switch breaks all three phases simultaneously — standard for three-phase motor loads, distribution feeders, or any three-wire circuit. The TMF trip unit gives a fixed thermal curve and fixed magnetic pickup; no field-adjustable dials, so the trip setting is locked at the factory rating.
Panel integration
Mounts in the standard DIN-rail footprint common to ABB's XT1 frame. Spring-cage or screw terminals depending on the suffix; the TMF block occupies the same slot as the electronic trip on XT1N variants. Verify the terminal pitch matches your existing busbar layout before committing the panel — the 3-pole width is fixed, but the lug orientation varies with the order-code suffix.