1640CT0801

Enclosures

Indoor Enclosures

Interior Mounts to Box Studs MH Box Front (Type 1) Enclosure for
400–600 A Interiors
Mono-Flat Front (Type 1 Enclosure) for 100–250 A Interiors Concealed Hinge Used on
100–600 A Trim Fronts
         
         
Indoor Enclosure Accessories

Flush Lock (standard) Catalog No.

PK4FL

  Sliding Vault Lock (optional)
Catalog No.

PK5FL

  Key NSR-251 Catalog No.

LP9618

Enclosure Types

Type Environment Protects Against
Type 1 Indoor Contact with the enclosed equipment, falling dirt
Type 2 Indoor Type 1, plus
  • Dripping and light splashing of non-corrosive liquids
Type 3R Outdoor Type 2, plus
  • Rain, snow, and sleet
Type 4 Indoor/outdoor Type 3R, plus
  • Circulating dust, lint, fiber
  • Settling airborne dust, lint, fibers
  • Windblown dust
  • Hosedown and splashing water
Type 4X Indoor/outdoor Type 4, plus
  • Corrosive agents
Type 5 Indoor Type 2, plus
  • Settling airborne dust, lint, fibers, and flyings
Type 12 Indoor Type 2, plus
  • Circulating dust, lint, fibers, and flyings
  • Settling airborne dust, lint, fibers, and flyings
  • Oil and coolant seepage

Indoor Enclosures (NEMA Types 1 and 2)

Boxes (MH):

  • Galvanized steel with removable endwalls, one is provided with knockouts and the other is blank.

  • Standard enclosure sizes:

    ‒ 20 in. (508 mm) wide x 5.75 in. (146 mm) deep, 600 A main lug interior max. or 400 A main circuit breaker max.

    ‒ 20 in. (508 mm) wide x 8.75 in. (223 mm) deep, for PowerPact™ L main circuit breaker interior, factory-assembled only.

  • Enclosure and interior mounting instructions are found in the information manual shipped with the interior.

  • Interiors mount directly to studs in the MH enclosure. Interior mounting brackets are not required.

  • Type 2 enclosure includes a driphood.

    ‒ Surface-mounted trim only.

    NOTE: Also available with knockouts / blank endwalls both ends.
NOTE: A wide variety of enclosure widths and height extensions are available for factory assembled panelboards.

Trims Fronts (NC):

  • Finished with gray baked enamel over cleaned phosphatized steel (ANSI 49).

  • Flush or surface mounted (Type 2 surface only).

  • Door has flush lock. Uses NSR-251 key.

  • Directory card located on the inside of the door.

  • Trim fronts for 400–600 A interiors are vented and mount to the enclosure with trim screws. Door hinges are concealed.

  • Optional hinged trim fronts are available. These meet most door-in-door specifications.

Hinged Trim on Surface Mounted Enclosure

NOTE: Special trim fronts are also available, including: welded metal directory card holders; three point latches; custom paint colors, stainless steel, custom door locks, taller and/or wider trim fronts.

Rainproof (Type 3R) and Dust Resistant (Type 5 and 12) Enclosures

Rainproof and Dusttight Enclosure
Type 3R, 5, and 12 Enclosure Vault Handle with Lock Catalog No.

PK4NVL

  • Finished with gray baked enamel over cleaned phosphatized galvanized steel (ANSI 49).

  • Gasketed door has vault handle with lock (uses NSR-251 key).

  • Directory card holder on inside of door.

  • No knockouts.

  • Removable drain screw for Type 3R enclosure rating.

  • Provisions for two ground bars.

Corrosion-Resistant Fiberglass-Reinforced Polyester Enclosures (Type4X)

Corrosion-Resistant Fiberglass-Reinforced Polyester Enclosure
  • Watertight and dust resistant.

  • Gasketed door with optional locking handle.

  • Directory card holder on inside of door.

Stainless Steel Enclosures (Type 4 and 4X)

Stainless Steel Enclosure
  • Watertight and dust resistant.

  • Gasketed door with optional locking handle.

  • Directory card holder on inside of door.

  • Type 304 or Type 316 stainless steel available.
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