Resistor units formed by GRF grids assembled in packs and connected in series or parallel (depending on the final ohm value), mounted and fixed inside galvanised steel casing / with an open bottom and side cooling slots.

The high quality of the materials used to produce this type of resistor makes it particularly suited in the case of high current and low resistance values; in fact, these resistors are used in starting and adjusting large motors, in electrical braking (lifting) and in loading systems for generators, test benches, harmonic filters and grounding of the star point. The formation of the grid enables utmost flexibility for adding additional intermediate fixed sockets.

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