The SENTRON 5SL4263-7RC is a 2-pole miniature circuit breaker with a C tripping characteristic, rated 63 A at 415 V AC and a breaking capacity of 10 kA per EN 60898. It occupies a single modular width (18 mm) on the DIN rail, so it fits tight panel layouts without crowding adjacent breakers. At 63 A it handles a substantial feeder or submain, not just a final subcircuit. Power loss per pole runs 5.4 W at rated current in the hot state — a figure to check for thermal buildup inside a densely packed enclosure, especially when multiple breakers are ganged.
Depth is 76 mm (70 mm behind the panel), width 18 mm (1 MW), height 90 mm. Halogen-free and silicon-free construction reduces toxic smoke and silicone contamination in sensitive environments.
Electrical Ratings & Compliance
Rated for AC only, 50/60 Hz, with a maximum operating voltage of 440 V in multi-phase operation and 250 V single-phase. The DC rating is limited to 72 V maximum — not a general-purpose DC breaker above that level.