DC-rated 4-pole MCB for infrastructure and residential panels
The Siemens 5SL5410-7RC is a SENTRON miniature circuit breaker with four poles, C-curve tripping characteristic, and a rated current of 10 A. It is designed for DC circuits up to 880 V maximum, with a breaking capacity of 10 kA. The 4-pole construction (4P) means all four poles switch and protect the DC circuit simultaneously, suitable for ungrounded or bipolar DC systems where full isolation is required. Rated for DC operation only, this MCB covers applications in residential buildings and infrastructure — think PV combiner boxes, DC distribution boards, or battery-bank protection where the voltage exceeds typical 72 V DC single-pole limits. The C-curve (10× to 15× In magnetic trip) handles moderate inrush from DC loads like contactor coils or LED drivers without nuisance tripping.
DIN-rail footprint and panel integration
The 5SL5410-7RC occupies 4 modular width units (72 mm) on a standard DIN rail, with a depth of 76 mm and height of 90 mm. Installation depth is 70 mm behind the panel surface. Mounting position is any orientation, which simplifies layout in crowded enclosures. The IP20 rating (with connected conductors) means it is touch-safe once wired but not sealed against moisture — keep it inside a rated enclosure. Supplementary devices such as shunt trips, auxiliary contacts, or alarm switches can be added via the product extension interface, so a single SKU can be field-adapted for remote tripping or status feedback without replacing the breaker.
Environmental range and materials
Operating temperature spans -40 °C to 75 °C, covering cold storage and hot rooftop enclosures. The breaker is halogen-free and silicon-free, which matters for outgassing-sensitive environments like clean rooms or data centers. Pollution degree 2 and overvoltage category II are standard for fixed-installation distribution boards. Power loss per pole is 1.4 W at rated current in hot operating state — four poles total 5.6 W heat dissipation inside the enclosure. Factor this into thermal calculations for sealed cabinets.