In industrial environments, protecting sensitive electrical terminals and components from dust, water, and impact is non-negotiable. The KL Enclosure (or Terminal Box) is an industry-standard design, renowned for its compact size and superior environmental protection. Finding a fabrication-ready drawing for this specific style of enclosure is essential for building compliant, high-performance equipment.

MechStream now offers this professional KL Enclosure drawing package, providing the exact blueprints needed for fabrication. This is not just a generic box; this design is based on the proven, high-performance Rittal-style KL series. The schematic details the single-piece, folded-and-welded body construction that provides exceptional rigidity and safety.

Crucially, our drawing includes the engineering details for the “knife-edge” protective channel around the opening. This feature diverts water and debris when the cover is opened, protecting the internal components. The plan also specifies the foamed-in-place PU gasket groove, which is the secret to its high IP66/NEMA 4 protection rating.

Download our free CAD and PDF files today to fabricate a terminal box that meets the highest industrial standards for safety and durability.

Key Features:

  • High IP/NEMA Rating: Engineered for a foamed-in polyurethane (PU) gasket groove, designed to achieve an IP66 and NEMA 4/4X protection rating.
  • Protective Channel: Includes the critical “knife-edge” folded rim design, which prevents water and dirt from entering the enclosure when opened.
  • Monobloc Construction: Details the fabrication from a single piece of sheet steel (or stainless), folded and seam-welded for maximum strength.
  • Internal Mounting: Specifies internal profile strips and mounting bosses for the easy installation of DIN rails or a chassis mounting plate.
  • Cover & Grounding: Includes details for the quick-release cover screws and integrated (M4/M5) grounding studs on both the body and cover.