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170M8502 Eaton Bussmann 1000V 400A Class aR High Speed Fuse
170M8502 Eaton Bussmann 1000V 400A Class aR High Speed Fuse

170M8502 Eaton Bussmann 1000V 400A Class aR High Speed Fuse

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Eaton Bussmann 170M8502 — 1000V 400A Class aR high speed fuse, 125 kAIC interrupting. Protects semiconductors in drives, rectifiers and inverters.
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    170M8503 Eaton Bussmann High Speed Fuse
    EatonFuseBussmannLow Voltage FusesClass aRSemiconductor Protection1000 V (IEC)
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    170M8502 Eaton Bussmann 1000V 400A Class aR High Speed Fuse

    At a Glance
    • 1000 V (IEC) rated voltage, 400 A rated current
    • 125 kAIC interrupting rating
    • Class aR time-current characteristic
    • Centre fuse status indicator

    The Eaton Bussmann 170M8502 is a square body fuse with 1000 V (IEC) rated voltage, 400 A rated current, 125 kAIC interrupting capacity, carrying a Class aR time-current characteristic. Construction is centre fuse status indicator.

    Specifications

    General Specifications
    Product Length/Depth90 mm
    Product Height74 mm
    Product Width160 mm
    Product Weight915 g
    EAN5027590464888
    UPC051712603744
    Electrical data
    Amperage Rating400 A
    ClassClass aR
    Clearing (I2T)115000 at 1000 V
    Interrupt rating125 kAIC
    Pre arc (I2T)19000
    Voltage rating1000 V (IEC)
    Watt losses105 W
    Product specifications
    ApplicationSemiconductor, DC Common bus, DC drives, power converters/rectifiers
    Fuse indicatorCentre fuse status indicator
    Fuse size3
    Fuse typeFlush end GKN/Type K indicator for micro

    Series Selection Table

    170M8502 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 170M8502?
    1000 V (IEC) / 400 A, with a 125 kAIC interrupting rating.
    How much fault current can the 170M8502 interrupt?
    125 kAIC. The available fault current at the installation point must not exceed this value.
    What does Class aR mean for the 170M8502?
    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 170M8502 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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