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    A 300A on-load tap-changer for tapped transformers with medium output rates.


    Technical Data

    Max. rated through-current 300 A
    Max. rated step voltage 3,300 V
    Max. rated switching capacity 1,000 kVA
    Max. voltage for operational equipment Um 72.5-245 kV
    Application Star point (neutral point) Single-phase design at any selectable winding position.
    Operating positions without change-over selector 14 max.
    Operating positions with change-over selector 27 max.


    MR has successfully manufactured and sold VACUTAP®-brand vacuum tap changers, which offer countless advantages over oil-based technology, for many years.
    This is why many clients around the world have fully switched to vacuum technology from MR.
    In light of this, we have removed the OILTAP® MS on-load tap changer from our product range and will be stopping series production as of December 31, 2020.

    As part of our after-sales services, we will of course continue to provide spare parts, repair services and expert technical support beyond the discontinuation date.