This standard covers enclosed low-voltage ac power circuit breakers, as follows: (1)stationary or draw-out type of two-or three-pole construction, with one or more rated maximum voltages o f 635, 508, a n d 254 V for application systems having nominal voltages o f 600, 480, a n d 240 V (2) Manually operated or power operated, with or without electromechanical or solid state trip device
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