NVENT HOF TB3R403 3R Terminal Box 4
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Manufacturer Hoffman Engineering
Mfg Catalog # TB3R403
North Coast Part # 885787


  • 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
  • 16 gauge galvanized steel


  • TB3R401 is UL and cUL for copper conductor only.


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


  • Bulletin Number: S90B3
  • Material: Steel
  • Model Code: 14448
  • Ship Wt. Std. Pkg. (lbs): 41.16
  • Interchangeable: False
  • Finish: Alum/Black
  • Catalog Number: TB3R403
  • A in.: 27
  • B in.: 16
  • C in.: 5
  • G in.: 24.00
  • H in.: 8.75
  • Amps: 400
  • Phase: 3Ø
  • Wire Range: (6) #4-600MCM
  • Volts: 600
  • Number of Bars: 4
  • 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


UPC 78351014448
GTiN 00783510144487
Finish Polyester Powder Coated
Width 16 in
Size 27.00x16.00x5.00 in
Color ANSI 61 Gray
Type Sealable, 3-Phase
Material 16 ga Steel
Applications For Outdoor, Commercial, Industrial Use
Depth 5 in
Height 27 in
Standard 50E Listed,CUL Listed Per CSA C22.2 No 94,File No. E256098,File No. E27525,IEC 60529,IP32,NEMA/EEMAC Type 3R,Type 3R,UL 1773 Listed,UL 50
Family Brand Name Hoffman
Amperage 400 Amp
Sub Brand Hoffman
Length 27 in
Mounting Type Wall
Wire Size (6) 4-600 MCM

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