50 A, 3-pole C-curve MCB for panel builders
The Siemens SENTRON 5SL6350-7 is a 3-pole miniature circuit breaker rated 50 A with a C-curve trip characteristic, sized for 400 V AC multi-phase circuits and delivering a 6 kA breaking capacity under both EN 60898 and IEC 60947-2. Supplementary devices like shunt trips or auxiliary contacts can be added, which simplifies stocking if the panel design later needs remote tripping or status feedback.
Drop-in fit vs. the 5SL4363-7 — what changes
The closest functional peer is the 5SL4363-7, which shares the same 3-pole, C-curve, 400 V AC rating and identical dimensions (76 mm depth, 54 mm width, 90 mm height). The difference is breaking capacity: the 5SL4363-7 is rated 10 kA under both EN 60898 and IEC 60947-2, versus 6 kA for the 5SL6350-7. If the panel was specified around the 5SL4363-7 and the available fault current is under 6 kA, the 5SL6350-7 drops in without rewiring — same footprint, same mounting, same terminal layout. But if the SCCR study calls for 10 kA, stick with the 5SL4363-7. The 5SL6350-7 also runs cooler per pole (3.8 W vs. 5 W at rated current), which helps when the enclosure is tight on thermal budget.
Panel integration — DIN rail, sealable, halogen-free
The sealable design allows locking the breaker handle in the off position for lockout/tagout compliance. The 50/60 Hz frequency range covers both 50 Hz European and 60 Hz North American line frequencies without derating.