Integrator note
The Siemens SENTRON 5SY4263-6 is a 2-pole miniature circuit breaker with B-curve tripping characteristic. Rated 10 kA to EN 60898 and 15 kA to IEC 60947-2, it handles both residential and industrial fault levels. The 36 mm width takes up two modular units on the DIN rail; installed depth is 70 mm, overall depth 76 mm. Operates on 50/60 Hz AC, with a rated voltage of 400 V AC across poles. For DC circuits, it interrupts up to 15 kA at a maximum 72 V DC. Pollution degree 3 and overvoltage category III suit it for industrial control panels.
Mounting and panel fit
Mounts on a DIN rail via the quick assembly system; any orientation allowed. Terminal design accepts combined feed top and bottom—no need to flip the breaker. IP20 protection with conductors connected; sealable cover available. Halogen-free and silicon-free construction. Ambient temperature range -40 °C to 75 °C, with humidity derating above 55 °C. Energy limitation class 3 for short-circuit coordination.