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Main conductor circuit breaker (SHU), 3-pole, E 20, 400 V

  1. SIEMENS 5SP33203 3910772
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Main miniature circuit breaker (SHU), 3-pole, E 20, 400V 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.