Siemens 5SY7310-6 — SENTRON 3-pole MCB, 10 A, B curve
At 40 °C the continuous rating derates to 9.52 A, at 50 °C to 9.02 A, and at 60 °C to 8.48 A; if the panel ambient runs hot, size up one amp rating to hold the load. The 30 kA IEC 60947-2 rating gives headroom for high-fault installations (industrial mains with transformer impedances below 5%), while the 15 kA EN 60898 rating satisfies residential and light commercial coordination.
Current production. No successor issued.
Panel integration
Sealable terminals let the commissioning engineer lock the cover screws after inspection — useful for utility or metering compartments where tamper evidence is required.
Certified to IEC / EN 60898-1, IEC / EN 60947-2, and UL1077, covering the three main approval regimes for miniature breakers in Europe and North America. Halogen-free and silicon-free construction avoids outgassing issues in sealed enclosures or near sensitive contacts. The energy limitation class 3 rating means it limits let-through energy during a fault — relevant for downstream component protection in a coordinated panel.