Patent ID: 8847086

Claim:
A circuit breaker lockout device for assembly with a circuit breaker having a base portion, a neck portion extending in a longitudinal direction from the base portion, and a head portion extending in a lateral direction from a distal end of the neck portion, the lockout device comprising: a housing including a side wall at least partially defining an internal cavity sized to receive the head portion of the instrument, and a protrusion extending from an internal surface of the side wall and positioned to retain the head portion within the internal cavity when the head portion of the instrument is received in the internal cavity, the housing defining an opening having a laterally facing first portion sized to receive the head portion of the instrument and a downward facing second portion sized to receive the neck portion of the instrument; a cover assembled with the housing and slideable with respect to the housing in the longitudinal direction between a lockout position at least partially blocking the first portion of the opening to secure the head portion of the instrument within the internal cavity, and a release position permitting withdrawal of the head portion of the instrument through the first portion of the opening; and a lock interface configured for securing the cover in the lockout position.