UL 489

1.1 This standard covers molded-case circuit breakers, circuit-breaker and ground-fault circuit interrupters, fused circuit breakers and accessory high-fault protectors. These circuit breakers are specifically intended to provide service entrance, feeder and branch circuit protection in accordance with the National Installation Codes in Annex B, Ref. 1. This standard covers instantaneous-trip circuit breakers (circuit interrupters) specifically intended as part of a combination motor controller in accordance with the National Installation Codes in Annex B, Ref. 1.