circuit-breaker with lock-out preventing closing
a circuit-breaker in which none of the moving contacts can make current if the closing command is initiated while the conditions which should cause the opening operation remain established.
[IEC 62271-100, ed. 2.0 (2008-04)]
circuit-breaker with lock-out device preventing closing
a circuit-breaker in which each of the moving contacts is prevented from closing sufficiently to be capable of passing current if the closing command is initiated while specified conditions remain established.
[IEC 60947-2, ed. 4.0 (2006-05)]
circuit-breaker with lock-out preventing closing
a circuit-breaker in which none of the moving contacts can make current if the closing command is initiated while the conditions which should cause the opening operation remain established
[IEV number 441-14-23]
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