Key ratings and what they mean for panel fit
The 5SY4463-7: The 10 kA and 15 kA interrupting ratings suit most industrial distribution panels and commercial sub-distribution. The C-curve suits moderate inrush loads like small motors, transformers, and lighting banks. Operating temperature spans -40°C to 75°C, with derating above 55°C as humidity increases (max 95% at 55°C down to 35% at 75°C). This matters for enclosures near process heat or in unconditioned outdoor cabinets. The 4-pole design does not switch the neutral (neutral conductor switching: No), so the neutral is solidly connected through the breaker. Verify your circuit needs a switched neutral before specifying.
Mounting and integration
Occupies 4 modular width units (72 mm) on DIN rail. Depth is 76 mm (70 mm installation depth). Mount in any position; the quick assembly system clips on without tools. IP20 with connected conductors — keep the panel door closed or add finger protection. Sealable (tamper-evident seal available) and halogen-free / silicon-free, which can be a requirement for certain clean or corrosive environments.