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Gray carbon steel wall-mount enclosure 20×20×7 in with hinged solid cover and screw clamps

Wiegmann

Wiegmann B-CH Carbon Steel Enclosure 20×20×7 in NEMA 12/13 Gray

SKU CH-NQFD-APGXH

Wall-mount carbon-steel enclosure rated NEMA 12/13 with screw-down clamps and poured-in-place gasket

  • Product typeBus Plugs
  • Main materialHAWA
  • NEMA 12/13 rating protects against dust and dripping water
  • 14-gauge carbon steel construction delivers structural rigidity
  • Seamless poured-in-place polyurethane gasket maintains a continuous seal
  • ANSI 61 gray polyester powder finish resists corrosion
  • External mounting feet and screw-down clamps simplify wall installation

Industrial enclosure for hazardous areas

The Wiegmann B-CH enclosure is a carbon steel cabinet rated NEMA 12 and 13 for indoor protection against dust, dirt and non-corrosive liquids. It suits plant engineers mounting bus plugs or terminal blocks in manufacturing cells where oil or coolant spray is present. The grey ANSI 61 polyester powder finish resists minor chemical exposure. Wall-mounting feet are integral to the body.

20×20×7 in interior with 14 ga walls

Usable depth measures 6.88 in behind a solid cover secured by screw-down clamps, giving enough room for standard DIN-rail assemblies and small contactors. The 14 gauge steel and seamless poured polyurethane gasket maintain the NEMA seal when the cover is clamped. A 3A922 interior panel is included for component layout. Larger power distribution blocks or deep transformers will exceed the available depth.

Included panel and certified construction

The supplied 3A922 sub-panel mounts directly to internal studs, reducing installation time for electricians. CSA, cULus and UL Listed markings confirm compliance with North American enclosure standards for industrial control equipment. No separate gasket kit or mounting hardware is required. Buyers needing viewing windows, larger cut-outs or stainless steel construction must specify a different series.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $473.99
Pricier than about 90% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameWIEGMANN
Product typeBus Plugs
Size & build
Main materialHAWA

Questions about this item

Will the 14 ga carbon steel enclosure with 20×20 in footprint accept my existing 20 in sub-panel?

The interior panel listed is 3A922 and the usable opening depth is 6.88 in, so a standard 20 in sub-panel fits within the enclosure dimensions.

How do I confirm the poured polyurethane gasket is sealing properly after wall mounting?

Close the hinged cover, tighten the screwdown clamps and check for even compression around the full perimeter; the NEMA 12/13 rating requires a continuous seal.

Does the box include the 3A922 interior panel or must I order it separately?

The 3A922 interior panel is listed as part of the enclosure specifications, so it ships installed inside the 20×20×7 in carbon steel body.

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