The Siemens 5SN6302-8CP is a 3-pole miniature circuit breaker from the SENTRON 5SN series, occupying 3 modular width units (54 mm) on a DIN rail. Rated at 400 V AC, 50 Hz, it carries a 6 kA breaking capacity per EN 60898 for residential and commercial branch circuits, and a 30 kA rating per IEC 60947-2 for industrial panel coordination — meaning it can interrupt fault currents up to 30 kA at the panel level, which covers most downstream short-circuit scenarios without requiring a current-limiting upstream device.
C-curve trip and thermal limits
Ambient range covers -40 °C to 75 °C, which handles unheated outdoor cabinets and hot machine compartments alike.
Wire sizing and terminal capacity
Solid conductor cross-section up to 35 mm² fits the terminals — that covers the full range of load-side wiring for a 3-pole MCB at this voltage class.