The Siemens 5SL4163-7CC is a 1-pole SENTRON miniature circuit breaker rated 63 A with a C-curve trip characteristic and 10 kA breaking capacity per EN 60898. It's a standard 18 mm wide unit (one modular width unit) for DIN-rail mounting in residential and infrastructure panels. The 63 A rating makes this a high-current single-pole MCB — typically used for heavy branch circuits or subfeeds where you need the full 63 A through one pole.
What the ratings mean for fit
C-curve means the magnetic trip fires at 5 to 10 times rated current — good for moderate inrush loads like small motors, transformers, or lighting banks. At 63 A, that's a magnetic trip window between 315 A and 630 A. The 10 kA breaking capacity (per EN 60898) tells you this breaker can safely interrupt a fault current up to 10,000 A at 230/400 V AC. That's standard for most residential and light commercial panelboards; if your available fault current exceeds 10 kA at the point of installation, you need a higher-rated breaker upstream. Single-pole, 1-module-wide (18 mm) footprint means it occupies one slot on a standard DIN rail. The 76 mm depth and 70 mm installation depth fit standard distribution boards. Rated IP20 with conductors connected — fine inside an enclosed panel, not for wet locations.
Panel integration notes
Snap-on DIN rail mount, any position. Terminal capacity accepts 0.75 mm² to 25 mm² — solid or stranded. Halogen-free and silicon-free construction. Sealable with a lead seal for revenue-meter applications. Touch protection built in. Rated for 50 Hz supply, overvoltage category III.