Circuit breaker trip blocking apparatus, systems, and methods of operation

摘要

Embodiments disclose a trip blocking apparatus of a circuit breaker exhibiting no trip at OFF functionality. The trip blocking apparatus effectively blocks tripping of a trip bar when the circuit breaker is in the OFF configuration. The trip blocking apparatus has a trip blocking arm and a blocking lever. A first projection of the blocking lever is configured to contact a handle arm, and a second projection is configured to interfere with the trip blocking arm to block tripping of the trip bar responsive to handle arm motion. Actuator resetting and blocking apparatus and trip blocking assemblies and methods of operating the trip blocking assembly are provided, as are other aspects.

主权项

1. A circuit breaker trip blocking apparatus, comprising:
a trip bar having a trip blocking arm; and a blocking lever having
a first projection configured and adapted to contact a handle arm, anda second projection configured and adapted to block tripping of the trip bar responsive to motion of the handle arm, wherein the blocking lever includes a pivot, wherein the pivot is mounted for rotation relative to a frame.