Power braking resistors model ROPPE

These are power/braking resistors in the version protected in a galvanized steel case with an open bottom.
They are made up of single or group mounted ROP series resistors connected and fixed inside the case.
These resistors are used in start up and adjustment of motors, in electric braking devices and in load systems for generating sets, testing benches, suppression of harmonics and grounding of the star centre.
The high value of power and the great amount of energy that can be dissipated are obtained by the important content of alloy in the winding and by the high impulse temperatures that can be supported without creating alterations or damages.
The high level of insulation is obtained through the use of top quality ceramic materials.


· Standard tolerance: ± 5%
· Temperature coefficient: ≤ 100 ppm/°C
· Maximum tension applicable: 1000 V
· Level of protection: IP20 standard – IP21 – IP22 / 23
· Connection directly on resistor terminals from the open bottom
· Maximum utilisation temperature: -55 °C / +500 °C (800 °C for impulses depending on the alloy used)

The nominal Pn power is intended only for the IP20 models.


· Application of a KLIXON type thermal contact connected to an internal terminal.
· Ohm values off standard compatibly with operation
· Intermediate sockets
· Off standard tolerances
· Epoxy powder paint in RAL colours on request
· Level of IP protection provided on request (compatibly with production)



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