Disclosed is a phase shift transformer for supplying voltage to a plurality of unit power cells in a medium voltage inverter system. The phase shift transformer according to the present invention comprises a first bushing arranged by the side of a tank and connected to a first winding to apply high voltage and a plurality of second bushings arranged on the top of a cover and connected to each of a plurality of second windings to output low voltage, wherein three outputs of the plurality of second bushings can be applied to unit power cells.

An automatic transfer switch includes a first phase switch component having a first plurality of cassettes, and at least one outer bus component disposed at an outer side of the first phase switch component. The automatic transfer switch additionally includes a first plate which is disposed on the outer side of the first phase switch component at a terminal end of the first phase switch component. The first plate is structured to increase impedance on an outer bus component of the first phase switch component to rebalance current along the first phase switch component.

The present invention relates to a molded case circuit breaker, in which a locking member is formed at an inner side of a lever and an anti-rotation member is formed at an upper like. Accordingly, the locking member can be brought into contact with the anti-rotation member even though a handle is rotated to an OFF position even in a fused state between a fixed contactor and a movable contactor, thereby preventing a rotation of the handle to the OFF position.

The invention relates to a switch assembly (1), in particular a preselector, for a variable transformer (4) having a first winding (2) and a second winding (3) with a first and a second tap (3.3, 3.4), said switch assembly comprising: a first connection terminal (2.1) that can be connected to the first winding (2); a second connection terminal (3.1) that can be connected to the first tap (3.3); a third connection terminal (3.2) that can be connected to the second tap (3.4); a first, second, third and fourth fixed contact (5.1, 5.2, 5.3, 5.4); a vacuum interrupter (6); a first moving contact (7) that can be contacted selectively with the first or second fixed contact (5.1, 5.2); a second moving contact (8) that can be contacted selectively with the third or fourth fixed contact (5.3, 5.4), wherein the second and the fourth fixed contact (5.2, 5.4) are connected to the second connection terminal (3.1), the first and the third fixed contact (5.1, 5.3) are connected to the third connection terminal (32), the first moving contact (7) is connected to the first connection terminal (2.1) via the vacuum interrupter (6), and the second moving contact (8) is connected to the first connection terminal (2.1).

A switching device and apparatus for switching on suddenly has an actuating mechanism element operatively connected to a latching mechanism by a transmission mechanism, The latching mechanism operates a switching lever through a further transmission mechanism. A contact assembly has a fixed switching piece facing a moveable switching piece that is guided in a contact slide. In the latching mechanism, a lever is arranged in operative connection with a locking part that is operatively connected to a transmission element which acts on the moveable switching piece.

The invention proposes a key module for a key of a keyboard. The key module includes a module base, a module cover that can be coupled with the module base and a key tappet for coupling a keycap that is translucent in at least one symbol section. The module base includes at least one through-hole between a bottom section of the key module and the module cover. The module cover includes a section that is translucent for the light from a light source. The light source is a color-changeable light source for backlighting the symbol section of the keycap. The translucent section of the module cover is aligned with the at least one through-hole when the module cover is coupled to the module base.

Disclosed is a suspensible external combined on-load tap changer, including: a switch box, a switch body and a motor mechanism, a top box wall of the switch box being opened with a top opening, a top box cover being mounted on the top opening, wherein the switch body is detachably mounted in the switch box and is entirely lifted in and lifted out by the top opening; and the motor mechanism is connected with the switch body in a driving manner. The switch body in the present invention uses a hoisting structure, and the top box wall of the switch box is opened with a top opening with a size large enough, so that the switch body is directly lifted in and lifted out of the switch box from the top opening, and installation and maintenance are easier.

A rotary encoder switch includes a cover cap, a fixing sleeve, a first base board, an actuating device, and a second base board disposed under the actuating device. The actuating device includes a base seat and a rotary element rotatably connected to the base seat and mounted to the cover cap. The first base board is disposed on the actuating device and has multiple first lighting elements. The rotary element is rotatable in conjunction with rotation of the cover cap so as to generate encoding signals according to each rotary position of the cover cap for controlling functions of an applied product. The first lighting elements are capable of emitting light in sequence subject to the rotation of the cover cap, while the light being emitted is permeable to the cover cap for users to easily recognize the exact rotary position of the cover cap.

A knob device includes a knob body, a graphic plate, and a light source. The knob body has a hollow space and has an end equipped with a screen. The graphic plate has multiple graphic windows including graphic symbols, respectively. The light source is configured to emit light through both at least one of the graphic windows and the hollow space to project at least one of the graphic symbols on the screen. The graphic plate is movable to switch the at least one of the graphic symbols to another of the graphic symbols.

A protective case for a mobile electronic communication device includes a rear cover including a compressible member and a catch, the compressible member and the catch being spaced from each other to form an alcove; and a front cover including a rim configured to extend into the alcove, the rim having an inner surface configured to contact the compressible member and an outer surface opposite the inner surface configured to engage the catch.