Worldwide leaders like Eaton, Schneider Electric, and ABB dominate the global junction-box market — offering varied materials, IP/NEMA ratings, and suitability from household wiring to heavy-duty industrial enclosures. Hammond Manufacturing is a top manufacturer of high-quality electrical enclosures, racks, cabinets, and transformers for industrial and commercial use. Eaton is a global power-management leader with more than a century of. Home » Top 10 Electrical Box Brands and Manufacturers in the World 2025 1. The company focuses on third-party certification and customization of its products.