Siemens 5SY4206-8 Circuit Breaker

Siemens 5SY4206-8 is a 2-pole miniature circuit breaker (MCB) rated for 6 A at 400 V AC, designed to protect two conductors in low-voltage distribution panels. It follows a D-curve tripping characteristic, providing faster magnetic response for short-circuit conditions relative to B- or C-curve devices. The unit is specified for 400 V AC operation with a 50/60 Hz supply and is listed with a breaking capacity up to 10 kA under EN 60898 at 400 V, with a higher 35 kA rating under IEC 60947-2, and a DC rating around 15 kA. Its physical footprint is about 90 mm in height and 36 mm in width, with mounting depth around 70 mm (range 70–76 mm), designed for quick DIN rail installation in control cabinets and distribution boards. The 5SY4206-8 belongs to Siemens Sentron 5SY MCB family, offering reliable overcurrent protection for circuits such as lighting and general-purpose outlets in commercial or light industrial electrical systems.