Professional resistors with extremely high overload characteristics, which are mechanically very robust and non-flammable, with excellent insulation. The joints obtained with electric welding and the large size of the terminals were designed to support strong, brief overloads of short duration and are particularly suitable for use where a low resistive value and high dissipation capacity are required.

The external protection is ensured by a ceramic cement coating.

The resistive element consists of a flat wire in Ni-Cr alloy or constantan, twisted on a high quality cylindrical ceramic support.

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