It handles motor loads up to 18.5 kW at 400 V AC, 22 kW at 500 V, and 37 kW at 690 V — so it covers standard European 400 V three-phase induction motors and higher-voltage machines on 690 V networks. The 100 kA breaking capacity (Icu) at 230/240 V and 50 kA at 400/415 V means it can interrupt severe faults without upstream fuses in most industrial panels.
Rated insulation voltage (Ui) is 690 V AC, same as the operational voltage (Ue), so it's fully rated for 690 V systems. Impulse withstand is 6 kV — typical for IEC 60947-2 motor circuit breakers in industrial environments. The magnetic trip unit (no thermal element) means it provides short-circuit protection only; overload protection must come from a separate thermal overload relay or a motor starter combination. Electrical durability is 50,000 cycles under AC-3 (motor switching) at 415 V and full rated current — that's a solid lifespan for a motor circuit breaker in a panel that sees frequent starts. Mechanical durability matches at 50,000 cycles.
Dimensions are 55 mm wide, 114 mm high, 136 mm deep — it fits a standard 55 mm module width on the rail, leaving room for adjacent contactors or overloads. The rotary handle control type is front-facing, so you need clearance for the handle swing in the enclosure door or a through-door mechanism.
Certified to EN/IEC 60947-2 (circuit-breakers) and EN/IEC 60947-4-1 (motor starters), plus UL 60947-4-1 and CSA C22.2 No 60947-4-1 — so it's accepted in North American and European jurisdictions. Also complies with IEC/EN 60335-1 Clause 30.2 and IEC/EN 60335-2-40 Annex JJ for glow-wire resistance (960 °C fire resistance per IEC 60695-2-11), which matters for household appliance applications. Climatic withstand conforms to IACS for marine environments.