It's designed for motor and transformer protection, with a magnetic tripping current of 51 A that clears short circuits fast enough to protect downstream contactors and cable runs. That's a high-interrupting rating for a compact 45 mm wide device — it handles most industrial supply transformers without needing a current-limiting upstream breaker. It carries motor power ratings from 0.37 kW at 230 V up to 1.5 kW at 690 V, and transformer protection ratings up to 2 kW at 690 V. The utilisation category is AC-3 and AC-3e per IEC 60947-4-1, so it's rated for starting and stopping squirrel-cage motors under load — not just resistive switching.
It ships with 1 NO + 1 NC auxiliary contacts built into the front face, so you get status feedback without adding a separate aux block. Power connections accept up to 6 mm² solid or 4 mm² flexible with ferrule, torqued to 1.7 N·m. The IK04 impact rating means it survives the odd dropped tool during commissioning.
The set quantity is 24 units, which matches the typical panel-builder batch for a multi-motor control cabinet.
Certified to EN/IEC 60947-2 (circuit-breaker standard) and EN/IEC 60947-4-1 (contactor/motor-starter standard), so it qualifies as both a branch-circuit protective device and a motor-protective device under IEC. Fire resistance tested to 960 °C per IEC 60695-2-11, and climatic withstand conforms to IACS for marine-environment humidity cycling. Operating altitude is limited to 2000 m without derating.