Industrial control panels incorporating intrinsic safety barriers and intended for connection to circuits residing in hazardous locations are covered by UL 698A,Standard for Industiral Control Panels Relating to Hazardous (Classified) Locations. This ul 508a equipment consists of assemblies of two or more components, such as motor controllers, overload relays, fused disconnect switches, circuit breakers, andrelated control devices such as pushbuttons, pilot lights, selector switches, timers, control relays, and similar devices, with associated wiring, terminal blocks, andsimilar components.įire bump controllers are covered by UL 218, Standard for Fire Pump Controllers.Įquipment intended for use in hazardous locations, as defined in the National Electrical Code, ANSI/NFPA 70, are covered by UL 698, Standard for IndustrialControl Equipment for Use in Hazardous (Classified) Locations. These requirements also cover industrial control panel enclosures and industrial control panels intended for flame safety supervision of combustible fuel typeequipment, elevator control, crane or hoist control, service equipment use, marine use, air conditioning and refrigeration equipment, and for control of industrialmachinery including metalworking machine tools, power press controls, and plastic injection molding machinery. This equipment is intended forinstallation in ordinary locations, in accordance with the National Electrical Code, ANSI/NFPA 70, where the ambient temperature does not exceed 40C (104F)maximum.
These requirements ul 508a cover industrial control panels intended for general industrial use, operating from a voltage of 600 volts or less. Amendments: All current amendments are included with the purchase of this document.