The Siemens SENTRON 5SL4301-7CC is a 3-pole miniature circuit breaker with a C tripping characteristic, rated 1 A at 400 V AC and a breaking capacity of 10 kA per EN 60898.
Above that, the thermal-magnetic element derates: 0.95 A at 40 °C, 0.92 A at 45 °C, 0.89 A at 50 °C, and 0.86 A at 55 °C. If the panel runs warm — say a crowded enclosure near a drive cabinet — factor the actual load against the 40 °C or 50 °C figure, not the 30 °C nameplate.
The housing carries IP20 protection with connected conductors, standard for live-part protection inside a closed panel. The breaker is sealable, halogen-free, and silicon-free, which simplifies compliance documentation for RoHS and REACH tracking.
