low-voltage ac power circuit breakers used in enclosures
|Publication Date:||9 August 1973|
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 of 635, 508, and 254 V for application on systems having nominal voltages o f 600, 480, a n d 240 V
(2) Manually operated or power operated, with or without electromechanical or solidstate trip devices
NOTE: In this standard, the words "circuit breaker" shall mean "enclosed low-voltage ac power circuit breaker."