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Bulletin Number:

  • S90B3
  • Industry Standards:

    UL 1773 Listed; Type 3R; File No. E256098 UL 50, 50E Listed; Type 3R; File No. E27525 cUL Listed per CSA C22.2 No 94; Type 3R; File No. E27525 NEMA/EEMAC Type 3R IEC 60529, IP32
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    These Terminal Boxes are wire-splice boxes for outdoor commercial and industrial applications that have a feeder tap to branch circuits. Boxes are available in three- or four-wire configurations in sizes up to 400 A.


  • Grounding provisions
  • Hub opening at top with cover
  • Provisions for padlocking or seal
  • Distribution lugs installed (see table for sizes)
  • Knockouts on bottom of enclosure
  • Removable cover
  • Drip-shield top and seam-free sides, front and back
  • Specifications:

    16 gauge galvanized steel


  • Touch-Up Paint
  • Lug Assembly
  • Interchangeable Bolt-on Hub
  • Notes:

    TB3R401 is UL and cUL for copper conductor only.