170M6538 Eaton Bussmann 1250V 315A Class aR High Speed Fuse
170M6538 Eaton Bussmann 1250V 315A Class aR High Speed Fuse

170M6538 Eaton Bussmann 1250V 315A Class aR High Speed Fuse

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Eaton Bussmann 170M6538 — 1250V 315A Class aR high speed fuse, 100 kAIC interrupting. Protects semiconductors in drives, rectifiers and inverters.
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    170M6538 Eaton Bussmann 1250V 315A Class aR High Speed Fuse

    At a Glance
    • 1250 V (IEC), 1300 V (UL) rated voltage, 315 A rated current
    • 100 kAIC interrupting rating
    • Class aR time-current characteristic
    • Centre fuse status indicator

    The Eaton Bussmann 170M6538 is a square body fuse with 1250 V (IEC), 1300 V (UL) rated voltage, 315 A rated current, 100 kAIC interrupting capacity, carrying a Class aR time-current characteristic. Construction is centre fuse status indicator.

    Specifications

    General specifications
    UPC051712264426
    EAN5996516019696
    Product Length/Depth168 mm
    Product Height76 mm
    Product Width95 mm
    Product Weight1.283 g
    Global Catalog170M6538
    Product specifications
    Amperage Rating315 A
    Breaking capacity100 kA
    Fuse indicatorCentre fuse status indicator
    Insulated metal gripping lugs (IMGL)No
    Utilization categoryaR (accompanied semiconductor protection)
    Voltage typeAC
    Fuse size3
    Rated voltage AC1250 V
    Center-to-center distance of connections82.4 mm
    Current typeAC
    Mounting dimensionM12
    ClassClass aR
    Clearing (I2T)58000 at 1000 V, 77500 at 1250 V
    Watt losses85 W
    Fuse shapeSquare body, flush end contacts
    Pre arc (I2T)9500
    ColorNone
    Interrupt rating100 kAIC
    Fitted with:Type K Indicator for micro
    Construction size3
    Mounting methodFlush
    Packaging typeStandard
    Voltage rating1250 V (IEC), 1300 V (UL)
    TypeFuse
    ApplicationSemiconductor, DC Common bus, DC drives, power converters/rectifiers
    Fuse typeFlush end BKN/80 Type K Indicator for Micro
    Fuse system (according to IEC 60269)IEC 60269-4 flush end connections type A

    Series Selection Table

    170M6538 series selection table
    Ampere ratings, dimensions and catalog numbers across the Square Body Fuse family, reproduced from the Eaton Bussmann datasheet.

    Applications

    • Industrial equipment

    Selection Notes

    • Check the voltage rating against the system voltage, and the interrupting rating against the available fault current, before specifying.

    Common Questions

    What are the ratings of the Eaton Bussmann 170M6538?
    1250 V (IEC), 1300 V (UL) / 315 A, with a 100 kAIC interrupting rating.
    How much fault current can the 170M6538 interrupt?
    100 kAIC. The available fault current at the installation point must not exceed this value.
    What does Class aR mean for the 170M6538?
    Class aR defines the fuse's time-current characteristic. E-rated fuses carry a defined melting curve so they coordinate predictably with upstream and downstream devices; mixing E and non-E ratings in one feeder defeats that coordination.
    How should I select the 170M6538 for a circuit?
    Match the voltage rating to the system voltage, keep the continuous current above the load current, and check that the interrupting rating exceeds the available fault current. In medium voltage work, select on the transformer or feeder fault level rather than the load current alone.

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