An electrical device includes a housing that is intended to be mounted on a rail, and a monitoring and/or control module including a printed circuit board. In the configuration in which the electrical device is mounted on the rail, at least one ground terminal of the printed circuit board is permanently electrically connected to the rail by elastic mechanical bearing on and direct electrical contact with a connecting element, itself elastically mechanically bearing on and making direct electrical contact with the rail or with an elastic blocking member for elastically blocking the housing on the rail.

An electrical feedback barrier is configured to safely interconnect an intrinsically safe power supply to a non-intrinsically safe electrical load device in a hazardous environment. Electrical feedback from the non-intrinsically electrical load device is blocked by the electrical feedback barrier to protect the intrinsically safe power supply from adverse operating conditions. The electrical feedback barrier and the electrical load device are enclosed in an explosion-proof or flameproof enclosure for compliance with electrical equipment safety standards in the hazardous environment.

An electrical feedback barrier is configured to safely interconnect an intrinsically safe power supply to a non-intrinsically safe electrical load device in a hazardous environment. Electrical feedback from the non-intrinsically electrical load device is blocked by the electrical feedback barrier to protect the intrinsically safe power supply from adverse operating conditions. The electrical feedback barrier and the electrical load device are enclosed in an explosion-proof or flameproof enclosure for compliance with electrical equipment safety standards in the hazardous environment.

Provided is an earthing structure of an earthing truck that includes a frame with a terminal connection part and a moving part configured to support the frame and is configured to ground a bus or a cable while the moving part moves. The structure including: an earthing plate provided on a lower surface of the moving part; and an earthing member configured to provide a contact pressure to the earthing plate as it contacts the earthing plate when the moving part moves.

Provided is an earthing structure of an earthing truck that includes a frame with a terminal connection part and a moving part configured to support the frame and is configured to ground a bus or a cable while the moving part moves. The structure including: an earthing plate provided on a lower surface of the moving part; and an earthing member configured to provide a contact pressure to the earthing plate as it contacts the earthing plate when the moving part moves.

A ground and test (G&T) device includes a test device housing having load and line conductors and a plurality of upper terminals and plurality of lower terminals carried by the test device housing and configured to engage the load and line conductors when the test device housing in installed within the compartment of the switchgear frame. A lower ground bus bar is carried by the test device housing and a plurality of grounding bars selectively connect either the upper terminals to the lower ground bus bar or connect the lower terminals to the lower ground bus bar. A ground shoe assembly is connected to the lower ground bus bar and configured to engage a grounding circuit carried by the switchgear frame.

A ground and test (G&T) device includes a test device housing having load and line conductors and a plurality of upper terminals and plurality of lower terminals carried by the test device housing and configured to engage the load and line conductors when the test device housing in installed within the compartment of the switchgear frame. A lower ground bus bar is carried by the test device housing and a plurality of grounding bars selectively connect either the upper terminals to the lower ground bus bar or connect the lower terminals to the lower ground bus bar. A ground shoe assembly is connected to the lower ground bus bar and configured to engage a grounding circuit carried by the switchgear frame.

A grounding bar is fashioned as having two (2) offset planar surfaces joined at opposite lengthwise sides by a common slanted wall. Each planar surface has a plurality of apertures disposed therein.

A grounding bar is fashioned as having two (2) offset planar surfaces joined at opposite lengthwise sides by a common slanted wall. Each planar surface has a plurality of apertures disposed therein.

An assembly contains a housing defining an internal space of the assembly, an electronic circuit arranged in the internal space, and a protection strip arranged in the internal space for protecting the electronic circuit against external influences. Accordingly, the protection strip forms a ground conductor that is electrically connected to the housing and to a ground connection of the electronic circuit. Furthermore, a method for producing the assembly is disclosed.