Industrial control panels (ICPs) are defined by the National Electrical Code (NEC) Section 409.2 as an assembly of two or more power circuit components, control circuit components, or any combination of power and control circuit components. These components are typically switches, terminal blocks, contactors, motor drives, transformers, overcurrent protective devices, and the like.
As a global leader in certifying ICPs, UL maintains close relationships with Authorities Having Jurisdiction (AHJs).
This partnership allows manufacturers to label either mass-produced or custom-built ICPs without needing UL examination of each design. Often called the “panel shop” program, it offers unique flexibility for panel manufacturers. The program covers certification for U.S. and Canadian markets. Also unique to this program is the required training for panel shops that want to be a part of the program.
Like other industrial equipment, ICPs can be evaluated as open type or enclosed. Open-type equipment is ultimately installed in an enclosure before being put into service. Enclosed ICPs can be rated for indoor use or any type rating, such as 3R, 4, or 12. In addition, these can be certified for use in classified areas (e.g., hazardous locations). Other valuable information can be found on the UL General Guide Information page.
Since training is an essential part of the program, UL offers various venues for training required for certification, as well as continuing education training. This can be customized, based on the clients’ needs.