Siemens 3NP1143-1DA10 fusible isolator switch is a high-performance electrical switch device.
This isolator switch, with the specification of 3NP114【250A】, has a rated current of 250A. It features flat-connected terminals, fuse core specification of Size:0/1, and is suitable for surface mounting. It has 3P poles, an insulation voltage of 1000V, an AC rated voltage of 690V, and a DC insulation voltage of 440V.
It offers reliable safety protection. In case of circuit abnormalities, the fuse core can blow in time to protect equipment and circuits. Adhering to strict quality standards, its typical mechanical service life is 1600 cycles, and the maximum I2t value during switch closing reaches 780kA2.s. It is widely used in various industrial and commercial electrical systems to provide isolation and overload protection, ensuring stable operation of electrical systems.