MCB for panel protection — 13 A C-curve, 15 kA
The Siemens 5SY4113-7CV is a 1-pole miniature circuit breaker with C-curve trip characteristic, rated 13 A at 35 °C and 250 V AC single-phase.
Thermal derating and ambient constraints
The 13 A rating holds at 35 °C; at 40 °C it derates to 11.56 A, and at 50 °C to 9.9 A. The operating range spans -40 °C to 75 °C, with humidity limits of 95% RH up to 55 °C, tapering to 35% RH at 75 °C.
Mounting position is unrestricted — vertical, horizontal, or inverted — which simplifies layout in crowded sub-distribution boards. IP20 with conductors connected, so it's intended for enclosed panel use, not washdown areas.