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Bulletin Number:

  • A51S
  • Industry Standards:

    UL 50, 50E Listed; Type 3R, 4, 4X, 12; File No. E27567 cUL Listed per CSA C22.2 No 94; Type 3R, 4, 4X, 12; File No. E27567 UL 508A Listed; Type 3R, 4, 4X, 12; File No. E61997 cUL Listed per CSA C22.2 No 94; Type 3R, 4, 4X, 12; File No. E61997 NEMA/EEMAC Type 3R, 4, 4X, 12, 13 CSA File No. 42184: Type 4, 4X, 12 IEC 60529, IP66 Meets NEMA Type 3RX requirements
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    Used in either indoor or outdoor applications, these enclosures combine a rugged continuous hinge, seamless foam-in-place gasket and stainless steel screw-down clamps for a reliable seal that protects components from corrosive environments.


  • 16 and 14 gauge Type 304 or 316L stainless steel
  • Seams continuously welded and ground smooth
  • Seamless foam-in-place gasket
  • Stainless steel screws and clamps
  • Pull stainless steel continuous hinge pin to remove door
  • Weldnuts provided for mounting optional panels and terminal block kits
  • Bonding provision on door and body
  • Accessories:

  • Fast-Operating Clamp-Cover Junction Box Clamp
  • Lock Kit for Clamp Cover Junction Boxes
  • Panels for Junction Boxes
  • Terminal Block Kit Assembly for Junction Boxes Overview
  • Modifications and Customizations:

    Hoffman excels at modifying and customizing products to your specifications. Contact your local Hoffman sales office or distributor for complete information.


  • A6044CHNFSS and A6044CHNFSS6 UL 508A Listed. The remaining catalog numbers are UL 50 Listed.
  • Purchase panels separately. Optional stainless steel, composite and aluminum panels are available for most sizes.
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