An on-load tap changer is provided having a plurality of modules, each of which is operable to change taps in a transformer winding. The tap changer includes a motor connected to rotate at least one shaft. The at least one shaft is connected to the tap change modules and is operable upon rotation to cause the tap change modules to each perform a sequence of operations that effectuate a tap change. A multi-turn absolute encoder is connected to the at least one shaft. A monitoring system is connected to the encoder and is operable to determine from the position of the at least one shaft where the tap change modules are in the sequence of operations.

A holding adapter for fixing control and signaling devices, including pushbuttons, on a front plate, includes: a housing having a first recess; and a mounting plate mounted in the housing and having a second recess. The second recess is arranged flush with the first recess so that a control or signaling device is guidable in an axial direction through the two recesses. The mounting plate is displaceable in the axial direction relative to the housing between a first end position and a second end position so as to provide a vertical compensation when the control or signaling device is fixed to the front plate, depending upon a thickness of the front plate.

A holding adapter for fixing control and signaling devices, including pushbuttons, on a front plate, includes: a housing having a first recess; and a mounting plate mounted in the housing and having a second recess. The second recess is arranged flush with the first recess so that a control or signaling device is guidable in an axial direction through the two recesses. The mounting plate is displaceable in the axial direction relative to the housing between a first end position and a second end position so as to provide a vertical compensation when the control or signaling device is fixed to the front plate, depending upon a thickness of the front plate.

Embodiments of the disclosure can include an inertial short-circuit and seismic hook for an electrical equipment disconnect switch.

Embodiments of the disclosure can include an inertial short-circuit and seismic hook for an electrical equipment disconnect switch.

A disc member is for a Thomson coil actuator of an electrical switching apparatus. The Thomson coil actuator has at least one generally planar coil. The disc member includes at least one annular-shaped conductive member structured to be driven by the coil, and a structural support member directly coupled to the conductive member.

A disc member is for a Thomson coil actuator of an electrical switching apparatus. The Thomson coil actuator has at least one generally planar coil. The disc member includes at least one annular-shaped conductive member structured to be driven by the coil, and a structural support member directly coupled to the conductive member.

A heat destructive disconnecting switch, comprises a first conductive member, a second conductive member, a movable conductive member, an overheating destructive member, an operating component, and a second elastic member. The movable conductive member conducts electricity to the first conductive member and the second conductive member. A first elastic member and the second elastic member act on an operating member. The first elastic member is compressed and provided with a first elastic force, and the second elastic member is provided with a second elastic force. When the overheating destructive member is destructed due to overheating, the first elastic force is diminished or vanishes, causing the second elastic force to be larger than the first elastic force. Consequently, the movable conductive member disconnects the current conducting state between the first conductive member and the second conductive member, thereby achieving a protective effect from overheating.

A heat destructive disconnecting switch, comprises a first conductive member, a second conductive member, a movable conductive member, an overheating destructive member, an operating component, and a second elastic member. The movable conductive member conducts electricity to the first conductive member and the second conductive member. A first elastic member and the second elastic member act on an operating member. The first elastic member is compressed and provided with a first elastic force, and the second elastic member is provided with a second elastic force. When the overheating destructive member is destructed due to overheating, the first elastic force is diminished or vanishes, causing the second elastic force to be larger than the first elastic force. Consequently, the movable conductive member disconnects the current conducting state between the first conductive member and the second conductive member, thereby achieving a protective effect from overheating.

A mechanical switch (10), in particular a light switch and/or a roller shutter switch and/or thermostat switch is provided. The mechanical switch (10) has a switching contact assembly (20), in particular a monostable, bistable or tristable switching contact assembly (20), and a base carrier (40), in which the switching contact assembly (20) is received The base carrier (40) has a holding device (50) for receiving an electromechanical actuator unit (100), which is designed in such a way that an electromechanical actuator unit (100) received in the holding device (50) can be supplied with voltage for effecting a state change of the switching contact assembly (20) independently of an external mechanical action on an operating mechanism by means of the electromechanical actuator unit (100).