What the ratings mean for fit
The 5SL5406-7RC: The C6 characteristic means the breaker trips at 5 to 10 times rated current — suited for moderate inrush loads like small DC motors, contactors, or control transformers. The 6 A rating is at 30 °C; above that, derate to 5.5 A at 40 °C, 5.3 A at 45 °C, 5.1 A at 50 °C, 4.8 A at 55 °C, and 4.5 A at 60 °C. If the panel ambient runs 50 °C, size the load to 5.1 A, not 6 A. The 880 V DC maximum rating covers series-string DC bus voltages common in solar, UPS, or traction battery systems. The 10 kA breaking capacity at DC is the short-circuit interrupt rating — verify the available fault current at the installation point does not exceed that. 4-pole construction (4P) means all four poles switch simultaneously, suitable for ungrounded DC systems where both positive and negative lines need coordinated isolation. The breaker occupies 4 modular width units (72 mm wide) on a DIN rail.
Deployment context
Rated for residential buildings and infrastructure — think DC distribution in telecom shelters, solar combiner boxes, or battery banks. The IP20 rating (with connected conductors) means it is for enclosed panels only, not washdown or outdoor exposure. Mount in any position; the sealable cover allows locking against unauthorized operation.