Abstract: A system includes a power panel actuation system configured to translate a power panel within a panel connection rack. The power panel actuation system includes an input shaft and a plurality of cams coupled to the input shaft, wherein the plurality of cams is configured to engage with the power panel upon rotation of the input shaft, and the plurality of cams is configured to linearly translate the power panel within the panel connection rack.

Abstract: A shutter device is provided for a bypass isolation automatic transfer switch. The shutter device comprises a frame and a shutter that is movably supported by the frame and that is configured to selectively cover and uncover conductors. At least one cam is movably supported by the frame and at least one shutter lever is interposed between the shutter and the at least one cam. The shutter lever is configured to move the shutter in response to movement of the cam.

Abstract: A system includes a power panel actuation system configured to translate a power panel within a panel connection rack. The power panel actuation system includes an input shaft and a plurality of cams coupled to the input shaft, wherein the plurality of cams is configured to engage with the power panel upon rotation of the input shape, and the plurality of cams is configured to linearly translate the power panel within the panel connection rack.

Abstract: This disclosure describes examples of an apparatus to enclose components of a switching assembly of an automatic transfer switch. In one embodiment, the apparatus, or arc chamber cover, has a housing made of material with optical properties that permit observation of the interior of the housing. A mounting assembly couples to the housing. The mounting assembly secures the apparatus to the automatic transfer switch. In one example, the mounting assembly comprises feet comprising a material with mechanical properties that can withstand pressure and other forces inside of the interior chamber. The apparatus also includes one or more baffles to control the flow of gasses and control electric arcs within the switching assembly.

Abstract: In a system with two electronic panels arranged with a plurality of busses between them, the removal of one of the electronic panels exposes the live busses to a user. To shield the user from the exposed busses, a mechanism operates shutters to close and cover the busses. The mechanism operation can be based on the rotation of a cam supporting the shutters in the open position. A manual override allows the shutters to be kept in the open position even when the busses are exposed due to the removal of an electronic panel.

Abstract: This disclosure describes examples of an apparatus to enclose components of a switching assembly of an automatic transfer switch. In one embodiment, the apparatus, or arc chamber cover, has a housing made of material with optical properties that permit observation of the interior of the housing. A mounting assembly couples to the housing. The mounting assembly secures the apparatus to the automatic transfer switch. In one example, the mounting assembly comprises feet comprising a material with mechanical properties that can withstand pressure and other forces inside of the interior chamber. The apparatus also includes one or more baffles to control the flow of gasses and control electric arcs within the switching assembly.

Abstract: An electromagnetic contactor that is designed for error-free assembly. The housing includes a contactor carrier interference that fixes the orientation between the housing and contact carrier. Orientation between the contact carrier and the armature is fixed by an offset elliptical joint. Pole shader interferences fix the orientation between the coil cover subassembly, the armature and the magnet. Shoulders located on two of four base legs fix the orientation between the housing and the base. The base includes a rail spring, spring catches, upper and lower catches that allow the contactor to be mounted on a DIN rail without using tools.