What it is and what it does
The Siemens SENTRON 5SL3504-7 is a 1-pole+N miniature circuit breaker (MCB) rated 4 A with a C tripping characteristic, designed for 230 V AC single-phase circuits. It breaks 4.5 kA per EN 60898 and 5 kA per IEC 60947-2 — the higher IEC figure matters when the breaker is applied in an industrial panel where the prospective fault current may exceed the domestic standard. The C-curve (5–10× In) is the standard choice for moderate inrush loads like small motors, pumps, and lighting banks in residential and light commercial infrastructure.
Panel fit and installation
Width is 36 mm (2 modular units), depth 76 mm, height 90 mm. It snaps onto standard DIN rail and accepts supplementary devices — auxiliary switches, shunt trips, alarm contacts — via the product extension interface. Mounting position is unrestricted, and the IP20 rating (with connected conductors) is typical for enclosed distribution boards. The 70 mm installation depth leaves room for wiring behind the rail in a standard 150 mm deep enclosure.
Environmental and compliance notes
Halogen-free and silicon-free construction, rated for ambient temperatures from -40 °C to 75 °C. Sealable to prevent tamper — useful for utility-metering or landlord-submeter applications. Overvoltage category III and pollution degree 2 suit fixed-installation distribution boards.