Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to “OFF”, “ON” and “TRIP” positions, typically about 90 degrees of rotation.

A power mechanism, a switch, a power conversion apparatus, and a power supply system. The switch includes a contact component, a knob, and a power mechanism connected between the contact component and the knob. The power mechanism includes a fastening bracket, a knob connector, a contact connector, a transmission component, a trip unit, and a cradle. Both the knob connector and the contact connector are rotatively connected to the fastening bracket, and rotation centers of the knob connector and the contact connector are collinear. The transmission component is configured to implement power transmission between the knob connector and the contact connector. The trip unit is configured to receive a switch-off signal, to implement tripping of the trip unit and the cradle. The transmission component is driven to move by using the cradle, to separate the movable contact from the static contact, so that the switch is switched off.

Disclosed herein is an industrial cut-off switch for visual identification of power system cut-off status. The industrial cut-off switch includes an enclosure having an accommodation space therein, a handle disposed on an outer surface of the enclosure and having a gripping part extending in one direction, and a switch unit disposed inside the enclosure, and connected to the handle operated to adjust an on/off state of the switch unit.

Circuit breakers with handles having at least one handle bearing pin that contacts an upper end portion of a moving arm and allows the arm to rotate to “OFF”, “ON” and “TRIP” positions, typically about 90 degrees of rotation.

A particularly reliable quick release latch and a release mechanism, as well as a quick grounding device or short circuiter, is particularly suited for low, medium, and/or high-voltage applications.

A particularly reliable quick release latch and a release mechanism, as well as a quick grounding device or short circuiter, is particularly suited for low, medium, and/or high-voltage applications.

A fusible disconnect switch device is provided. The disconnect switch a switch actuator, a handle bias element, and a slider assembly. The switch actuator is selectively positionable between an opened position and a closed position. The handle bias element includes a first end acting on the switch actuator and a second end coupled to the switch housing. The slider assembly is linked to the switch actuator. The slider assembly includes a first slider and a second slider each slidably movable with respect to the switch housing along a linear axis. The first slider is independently movable relative to the second slider. The handle bias element and the slider assembly are responsive to the position of the switch actuator to effect the switch closing operation and a switch opening operation.

A circuit breaker design allows for the circuit breaker to have an overall height (i.e., measured vertically along the circuit breaker's exposed outwardly-facing surface in the typical orientation of circuit breaker panels) that is slimmer than achievable with known typical configurations, while at the same time still providing robust power (e.g., voltage) handling and arc interruption capabilities. This is achieved, for example, by providing various components formed from polymer materials (which are generally less conductive of heat than metals), reinforced by metal members in certain areas, if needed, as well as a very particular configuration of a permanent magnet that is employed for enhanced arc quenching.

A self-powered recloser includes a circuit breaker, an electrical actuator, an electrical generator, a capacitor, and a lever. When in an on state, the circuit breaker harvests power from a medium voltage line required to actuate its movable contact to interrupt current flow in the medium voltage line, and when in an off state, it does not harvest power from the medium voltage line. The electrical actuator is configured to transition the circuit breaker from the off state to the on state. The capacitor when charged is configured to provide the electrical actuator with the electrical power required to transition the circuit breaker from the off state to the on state. The lever is configured to be moved by an operative. Movement of the lever is configured to charge the capacitor via the electrical generator.

Disclosed herein are devices and systems for controlling circuit breakers, such as in a breaker box. In one aspect, the device includes a substantially planar panel configured to removable secured to a breaker box; at least one frame member connected to the panel; at least one platform connected to the frame member and configured to travel along the frame member; at least one drive unit configured to move the platform along the frame member; at least one actuator unit configured to actuate at least one circuit breaker; exerting a force; at least one controller configured to control operation of at least one device component based on instructions regarding operation of the device; and at least one power source configured to power at least one device component. Also disclosed herein are methods for using the disclosed devices and systems.