Siemens 5SP33633 Main RCCB 63 A 400 V

Main conductor circuit breaker (SHU), 1-pole, E 20, 230/400 V

Main miniature circuit breaker (SHU), 1-pole, E 20, 230/400 V The miniature circuit breaker is the fuse for short-circuit protection 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.