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Gray carbon-steel enclosure 4x4x4 in with hinged screwdown cover NEMA 12 13

Wiegmann

Wiegmann B-CH 4x4x4 in enclosure line protection

SKU CH-ZNCC-D834A

Carbon steel enclosure rated NEMA 12 and 13 with ANSI 61 powder coat, screw-down clamps and external mounting plates

  • Product typeBus Plugs
  • NEMA 12 and 13 rated for dust and oil-tight protection
  • Carbon steel construction with 14/16 gauge thickness for structural rigidity
  • ANSI 61 gray powder coat finish resists corrosion and wear
  • Hinged cover with screwdown clamps and neoprene gasket maintains seal integrity
  • cULus listed and CSA certified for verified safety compliance

Compact industrial enclosure

The Wiegmann B‑CH series enclosure is a carbon‑steel junction box rated NEMA 12 and 13 for indoor protection against dust, dripping water and oil. It measures four inches high, wide and deep with a usable opening depth of 3.88 inches and carries CSA, cULus and UL listings. The gray ANSI 61 polyester powder coat resists corrosion in harsh environments.

Pre‑installation checks

Verify that the mounting surface can support the 14/16 gauge steel body and that the external mounting plates align with your planned layout. Confirm the screw‑down clamp closure and neoprene gasket meet your sealing requirements and that the solid cover provides the access style your wiring method needs. Ensure the enclosure’s NEMA rating matches the environmental classification of the installation area.

Thermal and power profile

As a passive enclosure the unit generates no heat, draws no power and produces no audible noise during operation. The powder‑coated steel shell dissipates any internal component heat through natural convection without forced airflow. No fan, pump or active cooling system is present, so acoustic output remains at ambient level.

How it compares

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

Price $60.99
Typical for this category: the median of 1,135 items is $54.99.

Specifications

Product
Brand nameWIEGMANN
Product typeBus Plugs

Questions about this item

What comes in the box with the B-CH 4x4x4 enclosure and what must I source separately?

The enclosure ships with a hinged solid cover secured by screw-down clamps, a neoprene gasket, and external mounting plates for wall installation; bus plugs, internal mounting hardware, and any wiring components are not included and must be purchased separately.

How do I decide between the listed NEMA ratings for this enclosure?

The single unit carries both NEMA 12 and NEMA 13 ratings, so no choice is required — it is certified for indoor protection against dust, falling dirt, and non-corrosive liquids including oil and coolant seepage.

What does the 4 in overall depth mean for the actual space I can use inside the enclosure?

The usable opening depth is 3.88 in, giving you that full internal dimension for mounting components, terminal blocks, or bus plugs within the 4 in external depth.

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