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Thread: Hermetically sealed or class I div 2 rated fuse required

  1. #1
    Join Date
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    Hermetically sealed or class I div 2 rated fuse required

    All,

    Good afternoon. I'm designing a 24vdc distribution jct. box using a Hoffman type 4X, fiberglass enclosure in a class I div. 2 area. I have 20, fused terminals, 1 amp (+) and 20 terminals (-). The plant told me that I could not the Cooper 5X20 fuse because fuses do not meet the area class. Does anybody know where I can find a hermetically sealed or class I div. 2 rated fuse? I sure would appreciate it. Currently designed with Weidmuller type "WSI 4/LD 60-150V AC/DC" terminal with Weidmuller type "G 20/1.00A/F" fuse.

    Thank you,
    David

  2. #2
    Join Date
    Aug 2011
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    Does this fall under 501.105(B)(5)?

    I think your proposed fuses are ok but would need an upstream switch complying with 501.105(B)(2).

  3. #3
    Join Date
    Feb 2003
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    Here is what Bussmann says about fuses in Class I, Division 2 locations.
    http://www.cooperindustries.com/cont...iv-2-fuses.pdf
    Don, Illinois
    (All code citations are 2017 unless otherwise noted)

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