A distribution board shield. The distribution board shield includes a drape formed of an elongated non-conductive material having a top end, a bottom end, a rear surface and a front surface. A connector is used to attach the drape within a distribution panel box so that the drape covers exposed bar buses, breaker busses and wires within the working area.

Methods, systems, and apparatuses provide power from multiple input power sources to adjacent outputs efficiently and reliably. Aspects of the disclosure provide a power distribution unit (PDU) that includes a number of power outputs including first and second adjacent power outputs. The PDU includes a printed circuit board having a first conducting layer electrically interconnected to a first power input connection and the first power output, a second conducting layer that is at least partially above the first conducting layer and in facing relationship thereto. The second conducting layer is electrically insulated from the first conducting layer and electrically interconnected with a second power input connection and the second power output, the first and second power outputs thereby connected to different power inputs.

Methods, systems, and apparatuses provide power from multiple input power sources to adjacent outputs efficiently and reliably. Aspects of the disclosure provide a power distribution unit (PDU) that includes a number of power outputs including first and second adjacent power outputs. The PDU includes a printed circuit board having a first conducting layer electrically interconnected to a first power input connection and the first power output, a second conducting layer that is at least partially above the first conducting layer and in facing relationship thereto. The second conducting layer is electrically insulated from the first conducting layer and electrically interconnected with a second power input connection and the second power output, the first and second power outputs thereby connected to different power inputs.

There is disclosed a rackmount case for the accommodation of optical equipment. The case comprises a metal housing comprising an open end, and a door comprising dimensions substantially the same as the open end for selectively opening and closing the open end, the door comprising a structural member made from metal and hinged to the housing along a long edge of the open end, and an aesthetic member made from plastic. The aesthetic member at least partially covers the structural member and comprises a one-way attachment comprising a plurality of protrusions and the structural member comprises a plurality of recesses for receiving the protrusions, each of the protrusions comprising a deformable head for engaging with a shoulder of a respective one of the recesses to hold the aesthetic member relative to the structural member.

In an elevator operation panel, a front part of a casing includes a frame body and a front surface plate. The frame body includes a first vertical frame and a second vertical frame. A fixing member is laid across the first vertical frame and the second vertical frame. A holding member for holding the front surface plate on the frame body is fixed to the fixing member. The holding member includes a holding portion that overlaps a vertical direction end portion of a front surface of the front surface plate, and a fastening portion that projects rearward from the holding portion and is screwed to the fixing member.

A handle for a compartment of a low, medium or high voltage switchgear includes: a body part; a hand grasping part; and a lock. The handle is movable from a closed position to an open position. When the handle is in the closed position, the handle is not useable to open a door of a compartment of the switchgear. When the handle is in the open position, the handle is useable to open the door of the compartment of the switchgear. In the open position, the hand grasping part is positioned so as to be graspable by a human user. In the closed position, a transition of an active element in the compartment of the switchgear from a quiescent state to an active or potentially active state activates the lock. Activation of the lock stops the handle from moving from the closed position to the open position.

The present disclosure relates to a distribution board ventilation system including a circulation chamber serving as a passage for air circulation and arc discharge; a first compartment provided at one surface of the circulation chamber; a second compartment which is adjacent to the first compartment and provided at the other surface adjacent to the one surface of the circulation chamber; a first discharge door mounted on the one surface of the circulation chamber to open the first compartment; a second discharge door mounted on the other surface of the circulation chamber to open the second compartment; and a linking means which is mounted between the first discharge door and the second discharge door and ensures that the open states of the first discharge door and the second discharge door are mutually exclusive.

An interlocking system for a circuit breaker assembly including a circuit breaker having a plurality of contacts includes a racking screw coupled to the contacts that changes a position of the circuit breaker when engaged by a tool. The interlocking system also includes a front panel defining an opening through which the racking screw is accessible, an access door coupled to the front panel and configured to selectively cover the opening, and an access door stopper coupled to the front panel. The interlocking system also includes a trip assembly coupled to the access door stopper. Each of the access door, the access door stopper, and the trip assembly are moveable between a first position and a second position such that moving to the first position triggers delivery of a trip signal to the circuit breakers to open the plurality of contacts, and wherein, in the second position, the access door is fully open to enable access to the racking screw through the front panel.

An interlocking system for a circuit breaker assembly including a circuit breaker having a plurality of contacts includes a racking screw coupled to the contacts that changes a position of the circuit breaker when engaged by a tool. The interlocking system also includes a front panel defining an opening through which the racking screw is accessible, an access door coupled to the front panel and configured to selectively cover the opening, and an access door stopper coupled to the front panel. The interlocking system also includes a trip assembly coupled to the access door stopper. Each of the access door, the access door stopper, and the trip assembly are moveable between a first position and a second position such that moving to the first position triggers delivery of a trip signal to the circuit breakers to open the plurality of contacts, and wherein, in the second position, the access door is fully open to enable access to the racking screw through the front panel.

The electronic device includes a housing that surrounds one or more components of the device and has front, back, top and bottom sides. At least one port is located on at least one of the front and back sides of the housing and configured to receive an end plug of a network cable and communicatively coupled to the one or more components. The housing includes at least one opening formed on at least one of the front and back sides, where the opening is configured to allow the network cable to pass therethrough. At least one side of the housing defines a space so as to allow the network cable to travel between the front side to the back side through the opening and the space.