It's a 3-pole, 415 V AC distribution breaker rated for 30 kA breaking capacity at 380/415 V AC — that's the F performance level, which means it handles high fault currents common in industrial panel feeders and main distribution boards. The LI protection (thermal for overload, magnetic for short circuit) is the workhorse setup for cable and busbar protection where you don't need selective coordination down to the branch.
The TM-D trip unit gives you fixed thermal (L) and fixed magnetic (I) settings; no adjustment dials, so what you see on the nameplate is what you get. That's fine for a simple distribution feeder where you know the load won't change. It's rated for isolation per EN/IEC 60947-2, meaning you can safely use it as a disconnecting means with visible break — the toggle handle gives positive indication of contact position. The 440 V insulation voltage and category III overvoltage rating suit it for fixed-installation distribution panels downstream of the main transformer. Mounts flat on a backplate, screw terminals front-connected top and bottom. At 75 mm wide, 130 mm tall, 60 mm deep, it tucks into a standard distribution enclosure without crowding. IP20 means it's for dry indoor panels only — not for washdown or outdoor duty.
The 8000-cycle electrical endurance at rated current and 30000-cycle mechanical endurance are solid for a distribution breaker in a panel that sees infrequent switching.