The TM-D trip provides fixed thermal protection for overloads (L) and fixed magnetic protection for short circuits (I); no adjustment dials, which simplifies specification but means you select the exact amp rating for the load. Breaking capacity is the headline: 85 kA Icu at 240 V AC, 36 kA Icu at 415 V AC, and 35 kA at 440 V AC, all per IEC 60947-2. Rated for isolation per EN/IEC 60947-2, meaning it provides a visible-break isolation point when open — no separate disconnect switch needed upstream in many configurations. IP40 enclosure protection keeps tools and fingers out but not water; mount in a cabinet, not exposed.
Front connection both top and bottom simplifies busbar or cable routing in a switchboard. The 4-pole version (3D neutral protection — no protection on the neutral pole) fits standard 140 mm wide cutouts; depth is 86 mm, height 161 mm. Connection pitch of 35 mm matches common busbar systems. Electrical durability: 50,000 cycles at 440 V at half rated current, 30,000 cycles at full rated current. Mechanical durability is 50,000 cycles. For a distribution breaker these are high — it handles frequent switching if used as a manual disconnect, not just a backup overcurrent device.