The Siemens 5SY6432-6 is a 4-pole SENTRON miniature circuit breaker with a B-curve trip characteristic, rated 6 kA breaking capacity per IEC/EN 60898-1 and 15 kA per IEC 60947-2 at 400 V AC. The IP20 enclosure (with conductors connected) suits clean, dry panel environments — typical for distribution boards and control cabinets in mechanical engineering and industrial settings.
Breaking capacity and dual standard rating
The 6 kA rating under IEC/EN 60898-1 covers residential and light commercial branch circuits. The 15 kA rating under IEC 60947-2 (and matching 15 kA at DC) means this breaker also qualifies for industrial panel SCCR requirements where higher fault currents are expected. That dual rating is the main reason to reach for this over a standard 6 kA-only MCB — it gives you headroom without swapping to a larger frame.
Integration notes
The quick-assembly fastening method and combined top/bottom terminals speed wiring. Sealable design allows lockout/tagout.