It provides L (overload) protection via the thermal element and I (short-circuit) protection via the magnetic element — a straightforward two-curve setup that doesn't require a separate electronic trip module. This is a 4-pole breaker (4P) with toggle control, designed for distribution applications. Its breaking capacity hits 100 kA Icu at 220/240 V AC and 70 kA at 380/415 V AC, both per IEC 60947-2 — high enough for most industrial main or feeder panels without cascading upstream.
The magnetic pickup is fixed on the TM-D, so it's not adjustable like an electronic Micrologic; you get a single short-circuit threshold. That's fine for straightforward motor or distribution protection where you don't need curve-shaping. Breaking capacity varies with voltage: 100 kA at 240 V, 70 kA at 415 V, 65 kA at 440 V, down to 10 kA at 690 V. At 480 V (common in North American panels) it's rated 65 kA Icu per UL 60947-4-1.
No last-time-buy clock, no forced migration.
The IK07 impact rating means it can handle a light knock during panel wiring.