4-pole C-curve 10 A MCB for 400 V distribution
The Siemens SENTRON 5SL4410-7 is a 4-pole miniature circuit breaker rated 10 A with C-curve tripping characteristic, designed for 400 V AC multi-phase operation at 50/60 Hz. It breaks fault currents up to 10 kA per both EN 60898 and IEC 60947-2 — the same rating under both standards, so no coordination gap between residential and industrial application frameworks. The C-curve (5–10× In magnetic trip) suits it for mixed resistive and moderate inductive loads common in lighting, socket circuits, and small motor branch circuits in residential and infrastructure builds.
Panel fit and mounting
Occupies 4 modular width units (72 mm) on a standard DIN rail, with an installation depth of 70 mm and overall depth of 76 mm. Mounting position is unrestricted — any orientation works. The IP20 rating applies with connected conductors, so it's intended for enclosed distribution boards, not exposed wet locations. Sealable design allows the installer to lock the toggle position after commissioning, preventing unauthorized switching in shared-access panels.
Environmental and compliance notes
Halogen-free and silicon-free construction, rated for ambient temperatures from -40 °C to 75 °C. Overvoltage category III, pollution degree 2 — standard for fixed-installation distribution boards. Mechanical service life is 10 000 operating cycles typical. Power loss per pole at rated current in hot operating state is 0.9 W, which helps when calculating thermal load in a crowded enclosure.