Rated 400 V AC (single-phase or multi-phase) and 230 V AC at the supply, it carries a 6 kA interrupting capacity.
In a panel with a transformer rating or upstream fuse that limits fault current below 6 kA, this MCB coordinates correctly without cascading failure. The 5 kA rating covers North American installations where the branch circuit is not a service entrance. The 10 000 mechanical operating cycles typical service life is sufficient for most fixed-installation applications where the breaker is operated infrequently (e.g., isolation or maintenance switching). For frequent switching duty (e.g., as a manual motor starter), a contactor or motor-protective breaker would be more appropriate.
The 5SY6104-7CC carries EN 60898 certification for the 6 kA rating and UL 1077 / CSA C22.2 No. 235 for the 5 kA rating, covering European and North American installations. Sealable terminals (top and bottom combined) allow the breaker to be locked in the ON position for lockout/tagout compliance. The quick-assembly fastening method and any mounting position simplify panel integration across different enclosure layouts.