Siemens 5SY7463-7 SENTRON MCB — 4-Pole C-Curve, 15/20 kA
Breaking capacity is 15 kA per EN 60898 and 20 kA per IEC 60947-2 at 400 V AC; under DC conditions (60 V, max 72 V) it holds 15 kA per IEC 60947-2. For UL 1077 / CSA C22.2 No. 235 applications the rating is 5 kA. These figures tell you the fault-current headroom: at 15 kA it meets the standard domestic/commercial panel requirement; the 20 kA IEC rating gives extra margin in industrial distribution where available fault current may be higher. This is a current-production part (lifecycle stage: current).
Standards, Approvals & Environmental
The 5SY7463-7 is certified to IEC / EN 60898-1 (domestic/commercial MCB standard) and IEC / EN 60947-2 (industrial breaker standard), plus UL 1077 for North American supplementary protection. Ambient operating range is -40 °C to 75 °C, with humidity derating: max 95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C. IP20 with connected conductors — the terminals are finger-safe only when wired; the breaker itself is not sealed against moisture ingress. Mount it inside a panel with at least IP54 enclosure if washdown or condensation is present.
Panel Integration & Mounting
Combined terminal top and bottom — line and load can enter from either direction, simplifying busbar routing in a crowded enclosure. Mounting position is any — the breaker operates correctly upright, sideways, or inverted. The neutral conductor is not switched (4-pole but all poles are phase poles; use a separate neutral bar if neutral isolation is required). Sealable option available for tamper-proofing in metering or critical circuits. Energy limitation class 3 means the breaker limits let-through energy to the lowest level per IEC 60898 — best selectivity with downstream devices and reduced arc-flash hazard on the load side.