UL 1066

These requirements cover low-voltage ac power circuit breakers as follows:

a) Stationary-mounted or drawout-mounted types,

b) 2-pole and 3-pole constructions,

c) Manually operated or power operated, and

d) With or without electromechanical or solid-state type trip device.

These requirements apply to drawout-mounted type low-voltage ac integrally fused power circuit breakers, consisting of low-voltage ac power circuit breakers with integral current limiters or fuses.

These requirements apply to low-voltage ac fuse draw-outs consisting of current limiters or fuses in a drawout assembly intended to be connected in series with a low-voltage ac power circuit breaker to form a fused circuit breaker.

These requirements apply to general purpose type low-voltage dc power circuit breakers.

These requirements cover equipment intended for use in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70.