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VRS 1,0 I Updated: 2021-02-09


THYRISTOR CONTROLLER VRS. For manual variable speed control of single-phase motors. Minimum speed is adjusted by means of a screw under the knob. The controller is certified and approved as conforming to electrical safety and interference regulations on all markets. All single-phase fans from Östberg can be regulated with VRS controller.

At low speeds, a particular engine noice can occur. For sound sensitive installations we recommended 5-steps transformers.