What Is The Difference Between UL 508 and UL 508A?

About Industrial Control Panel Control Panel for the Industrial Environment, Generally speaking, an Industrial Control Panel is defined as an assemblage of two or more constituents that are organized in a systematic, logical, and standard manner. Examples of such constituents include motor controllers, fused disconnect switches, overload relays, circuit breakers, control devices with push-button stations (control relays), timers (control relays), […]