Rated for a 63 A 4-pole branch at 400 V AC — C-curve, 6 kA
The Siemens SENTRON 5SL6463-7 is a 4-pole miniature circuit breaker rated 63 A at 400 V AC, with a C-curve trip characteristic and a 6 kA breaking capacity per EN 60898 and IEC 60947-2. That C-curve means it holds through moderate inrush — motor-start or capacitive loads up to about 5–10× rated current — then trips fast on a hard short.
DIN-rail footprint and ambient derating
The 5SL6463-7 occupies 4 modular units (72 mm) on a standard DIN rail, with a depth of 76 mm and an installation depth of 70 mm. It mounts in any position. At 30 °C it carries the full 63 A; at 40 °C it derates to 59.18 A, at 45 °C to 57.96 A, and at 55 °C to 52.93 A.
Current production — no obsolescence concern
The 5SL6463-7 carries a current lifecycle stage from Siemens. No phase-out notice, no last-time-buy window. For a BOM line that needs this exact 4-pole C 63 A MCB, the supply channel is the standard distribution route — no broker hunt required.
Panel integration and compliance
IP20 with connected conductors. Sealable, halogen-free, silicon-free. Touch protection on the terminals. Neutral conductor is not switched (4-pole without switched neutral). Suitability listed for residential buildings and infrastructure.