Miniature circuit breaker, 230/400 V, Icn: 10 kA, 1P, C-Char, In: 4 A,

Circuit breaker Universal current 220 V DC 230/400 V AC 10kA, 1-pole, C, 04A The miniature circuit breaker is the fuse for short-circuit protection. https://www.siemens.com/global/en/home/products/energy/low-voltage/components/sentron-protection-devices/miniature-circuit-breakers.html. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe and efficient electrical infrastructure in buildings and industry.