Miniature circuit breaker, 400 V, Icn: 15 kA, 4P, Icu: 20 kA, C-Char,

Miniature circuit breaker 400 V 15kA, 4-pole, C, 40A, D=70 mm 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.