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Description / Abstract:
These requirements cover molded-case circuit breakers, molded-case switches, and circuit-breaker enclosures rated up to 1000 V dc, intended for use with Direct Current (DC) Microgrid systems and Article 712 of the National Electrical Code, ANSI/NFPA-70.
These requirements are intended to be used in conjunction with the requirements in the Standard for Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures, UL 489, hereafter referred to as UL 489, except as modified or supplemented by this Outline.