Wimex NH gG Standard low-dissipation fuse, 400 amperes, 500V.
NH type gG industrial fuses are normally used to protect cables, power lines and equipment against overloads and short circuits.
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NH fuses due to their multiple classes of use are suitable for overload and short-circuit protection of lines, motors and transformers. They are to be considered as per product standards for use by trained persons, thus for industrial applications.
NH fuse bases must be sized according to the current rating of the largest capacity fuse that can be inserted in the base. Fuses should be inserted and disconnected in the bases by means of special handles.
Fuses with tripping characteristic gG (for general use) have the capacity to interrupt all currents between the minimum value that causes the element to melt and the value corresponding to the rated breaking capacity. The breaking capacity of a fuse is the maximum value that it is capable of interrupting the maximum values expressed in KA are given in IEC EN 6269.1 standards.
A selectivity ratio of 1.6 at 690V and 1.25 at 400 Vac succeeds in practice in normally meeting all usage requirements and thus ensuring high fault selectivity.
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