3NE semiconductor protection fuses are Siemens' protectors for variable-frequency drives and soft starters. They offer very fast switching speeds and reliable short-circuit protection. 3NE semiconductor protection fuses have a unique design that integrates semiconductor protection and line protection, which greatly reduces costs, space and installation costs. 3NE semiconductor protection fuses have a rated current of 1-1200A and have high frequency cyclic load capability, which can ensure long-term operation.