General Electric Company

Abb Schweiz Ag

Adam Skrudlik

Tomasz Ignasiak

Mahadeva Mallappa Mittu

Lars Pommerencke

Marcin Piotr Lagiewka

Rafal Michal Burzynski

Ramesh Sathyanarayana

Marcin Rodak

Karthikeyan Srinivasan

Rafal Burzynski

A draw-out type circuit breaker apparatus is provided and includes a base from which a circuit breaker is selectively dismounted and moved along a first portion of a dismounting path into a disconnected position, a plate, fixed to the base, which is configured to guide the movement of the circuit breaker along the dismounting path, and a toggle link, coupled to the plate and biased to remain in a locking position, which is configured to block the circuit breaker from moving along the dismounting path beyond the disconnected position while the toggle link remains in the locking position, and to cause the circuit breaker to freely move from the disconnected position and along a second further portion of the dismounting path upon a temporary defeat of the bias thereof.

Apparatus including a circuit breaker retaining mechanism for use in withdrawable circuit breakers and method of operating the same

A draw-out mechanism for a molded case circuit breaker includes a fixed side plate and a plurality of auxiliary contacts mounted to the fixed side plate. The draw-out mechanism also includes a movable member moveably mounted to the fixed side plate. The movable member includes a cam member that acts upon the plurality of auxiliary contacts. The draw-out unit further includes a front panel member having a visual indicator mechanism and a locking mechanism provided with a padlock locking arm, a door lock and a second lever. In addition, the draw-out unit includes a connector plate that operatively couples the movable member and the front panel member. The connector plate includes a plurality of adjustment portions that establish a desired extension of the connector plate relative to the movable member to accommodate a predetermined spacing between the movable member and the front panel member.

Draw-out mechanism for molded case circuit breakers

A secondary disconnect for a circuit breaker drawout system is provided. The secondary disconnect includes a plurality electrical connectors that are coupled to spacer frames. The spacer frames are movably mounted to guide pins that couple the secondary disconnect to the circuit breaker. A compression spring is disposed about the guide pin and bias's the secondary disconnect. A second spring positioned within the spacer frame applies a biasing force when the circuit breaker is in the racked-in position.

Secondary disconnect for circuit breaker drawout system

A drawout system with an interface proving a lower ingress protection rating is provided. The system includes a flange mounted to a door. A sleeve is movably mounted to the door adjacent to the flange. As the circuit breaker is moved from a racked-in position to a test position to a racked-out position, the sleeve moves with the circuit breaker and avoids creating exposure to electrical components within the drawout. The drawout system allows the operator to operate the circuit breaker with the door open or closed.

Drawout door interface for circuit breaker

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Bielsko-Biala, Poland

Adam Skrudlik