A control module for an electric switch comprising: a body part, a main control shaft, an operating shaft and a drive system operationally connecting the main control shaft to the operating shaft such that the operating shaft is adapted to be rotated by the main control shaft. Rotation axes of the main control shaft and operating shaft are perpendicular to each other. The body part comprises a first side wall, a second side wall, a top wall and a bottom wall. The bottom wall is provided with a bottom recess adapted to receive a portion of an add-on, a bottom part of the main control shaft being accessible through the bottom recess.

A control module for an electric switch comprising: a body part, a main control shaft, an operating shaft and a drive system operationally connecting the main control shaft to the operating shaft such that the operating shaft is adapted to be rotated by the main control shaft. Rotation axes of the main control shaft and operating shaft are perpendicular to each other. The body part comprises a first side wall, a second side wall, a top wall and a bottom wall. The bottom wall is provided with a bottom recess adapted to receive a portion of an add-on, a bottom part of the main control shaft being accessible through the bottom recess.

An electric operating device for a circuit breaker that includes a housing, a transmission mechanism is installed in the housing, and a side wall of the housing serves as an operation surface and is provided with a first sliding groove communicated with the interior of the housing; a sliding rod is installed in the housing; a driving member controlled by the transmission mechanism is installed on the sliding rod; the driving member is provided with a closing operation portion and an opening operation portion; the driving member passes through the first sliding groove and extends out of the housing; the driving member moves along the sliding rod under the control of the transmission mechanism; and the closing operation portion and the opening operation portion operate a handle of the circuit breaker to be closed and opened respectively.

An electric operating device for a circuit breaker that includes a housing, a transmission mechanism is installed in the housing, and a side wall of the housing serves as an operation surface and is provided with a first sliding groove communicated with the interior of the housing; a sliding rod is installed in the housing; a driving member controlled by the transmission mechanism is installed on the sliding rod; the driving member is provided with a closing operation portion and an opening operation portion; the driving member passes through the first sliding groove and extends out of the housing; the driving member moves along the sliding rod under the control of the transmission mechanism; and the closing operation portion and the opening operation portion operate a handle of the circuit breaker to be closed and opened respectively.

An electrical switch including a frame, an operating shaft, and a bridge member movable in a depth direction relative to the frame by rotation of the operating shaft, wherein the depth direction is parallel with a rotation axis of the operating shaft, and wherein the operating shaft is adapted to exert a first opening force to the bridge member during an opening event. The electrical switch includes an anti-tilting member movable in a lateral direction relative to the frame by rotation of the operating shaft, the lateral direction being perpendicular to the depth direction, wherein the anti-tilting member is adapted to exert a second opening force to the bridge member during the opening event, the second opening force being parallel to the first opening force and spaced apart from it in the lateral direction.

Embodiments of a disconnector and a switchgear, wherein the disconnector comprises a contact assembly operable to change a status of a circuit, the disconnector arranged in the circuit; shafts adapted to be driven to rotate to operate the contact assembly; and a transmission unit arranged between the shafts and comprising: a plurality of gears coupled to the shafts to enable the shafts to rotate with a mutual engagement of the plurality of gears; and a holding assembly adapted to hold radial positions of the plurality of gears to ensure the mutual engagement of the plurality of gears. By arranging the holding assembly to hold the radial positions of the gears to ensure the mutual engagement of the plurality of gears, only one input shaft and one transmission unit are enough to transmit large torques sufficient to operate the contact assembly.

Embodiments of a disconnector and a switchgear, wherein the disconnector comprises a contact assembly operable to change a status of a circuit, the disconnector arranged in the circuit; shafts adapted to be driven to rotate to operate the contact assembly; and a transmission unit arranged between the shafts and comprising: a plurality of gears coupled to the shafts to enable the shafts to rotate with a mutual engagement of the plurality of gears; and a holding assembly adapted to hold radial positions of the plurality of gears to ensure the mutual engagement of the plurality of gears. By arranging the holding assembly to hold the radial positions of the gears to ensure the mutual engagement of the plurality of gears, only one input shaft and one transmission unit are enough to transmit large torques sufficient to operate the contact assembly.

A remote controlled miniature circuit breaker includes a helical gear that engages with mating teeth of a slider plate coupled to main contacts of the circuit breaker, the helical gear including a flat portion to allow the sliding plate to slide past the helical gear. A unidirectional motor responds to an external signal to drive the helical gear while engaging the mating teeth of the slider plate, thereby moving the slider plate to close the main contacts. The motor is configured to respond to an external signal to resume the unidirectional rotation of the helical gear to position the flat portion of the gear to allow the slider plate to slide past the helical gear and contact a kicker lever to thereby open the main contacts. A trip lever pivotally mounted separately from the kicker lever, pushes the kicker lever to open the main contacts in a trip operation.

A remote controlled miniature circuit breaker includes a helical gear that engages with mating teeth of a slider plate coupled to main contacts of the circuit breaker, the helical gear including a flat portion to allow the sliding plate to slide past the helical gear. A unidirectional motor responds to an external signal to drive the helical gear while engaging the mating teeth of the slider plate, thereby moving the slider plate to close the main contacts. The motor is configured to respond to an external signal to resume the unidirectional rotation of the helical gear to position the flat portion of the gear to allow the slider plate to slide past the helical gear and contact a kicker lever to thereby open the main contacts. A trip lever pivotally mounted separately from the kicker lever, pushes the kicker lever to open the main contacts in a trip operation.

A remote controlled miniature circuit breaker includes a helical gear that engages with mating teeth of a slider plate coupled to main contacts of the circuit breaker, the helical gear including a flat portion to allow the sliding plate to slide past the helical gear. A unidirectional motor responds to an external signal to drive the helical gear while engaging the mating teeth of the slider plate, thereby moving the slider plate to close the main contacts. The motor is configured to respond to an external signal to resume the unidirectional rotation of the helical gear to position the flat portion of the gear to allow the slider plate to slide past the helical gear and contact a kicker lever to thereby open the main contacts. A trip lever pivotally mounted separately from the kicker lever, pushes the kicker lever to open the main contacts in a trip operation.