Siemens SENTRON 5SY6332-6 — 3-pole B-curve MCB for panel builders
The Siemens SENTRON 5SY6332-6 is a 3-pole miniature circuit breaker with B-curve tripping characteristic, rated 400 V AC and occupying 3 modular width units (54 mm) on a DIN rail. It carries dual interrupting ratings: 6 kA per EN 60898-1 for residential/commercial branch circuits and 15 kA per IEC 60947-2 for industrial panel coordination, with a separate 5 kA rating under UL 1077 for North American supplementary protection applications.
Interrupting capacity and standard coverage
The 6 kA rating under EN 60898-1 covers the standard branch-circuit fault duty for most building installations. The UL 1077 listing at 5 kA means it qualifies as supplementary protection in North American panels, not as a branch-circuit rated device under UL 489.