Electrical switching devices, in particular low voltage power circuit breakers

Low voltage circuit breaker means for being disposed along a power supply line said low voltage circuit breaker means comprising:

• housing means, said housing means defining an interior space therein and separating the interior space from an exterior space at least partially surrounding the housing means, said housing means having an opening therein from the interior space to the exterior space;
• first terminal means for receiving at least one power supply line;
• second terminal means for receiving at least one output power line;
• circuit breaker arm means for disrupting flow of current between the at least one power supply line and the at least one output line, said circuit breaker arm means having first contact means for being connected to said first terminal means, and second contact means for being connected to said output power line, said circuit breaker arm means being configured for being connected between said first contact means and said second contact means for flow of current between said first contact means and said second contact means, and disconnected from at least one of said first contact means and said second contact means to disrupt flow of current between said first contact means and said second contact means;
• toggle arm means connected to said circuit breaker arm means to move said circuit breaker arm means into said connection between said first contact means and said second contact means and to disconnect said circuit breaker arm means from said at least one of said first contact means and said second contact means;
• means for connecting said first contact means to said first terminal means;
• means for connecting said second contact means to said second terminal means;
• electrical shunt means in contact with said first and said second contact means for drawing electrical current arcs;
• adjustable tripping means for variably adjusting the tripping current, said adjustable tripping means comprising knob means for adjusting the tripping current, said knob means having reference indicators thereon for indicating a setting of said knob means;
• cover means for covering the opening of said housing means, said cover means having a first opening therethrough for passage of at least a portion of said toggle switch means through said cover means, and at least one second opening therethrough for viewing of the reference indicators of the knob means;
• hinge means for hingedly attaching said cover means to said housing means;
• said cover means comprises a first and a second leg portion extending away from said cover means, said first and said second leg portion being disposed substantially perpendicularly to said cover means and parallel to one another;
• said first and said second leg portion being configured for overlapping at least a part of said housing means;
• said first and said second leg portion each have a first end disposed adjacent said cover means, and a second end disposed opposite said first end;
• said second end of each of said first and said second leg portion being coaxially attached to said housing means by said hinge means;
• said hinge means comprise a pivot bearing, said pivot bearing comprising a projection for being disposed in and interlocking with an opening;
• one of:
• said at least a part of said housing means, and
• said second end of said leg portion comprise said projection of said pivot bearing;
• the other of:
• said at least a part of said housing means, and
• said second end of said leg portion comprise said opening for receipt of said pivot projection;
• said housing means comprises a base portion and side walls extending from said base portion;
• said first and second leg portions of said cover means overlap said side walls of said housing, and said side walls comprise said one of:
• said pivot projection, and
• said pivot opening for receipt of said pivot projection;
• said first and second leg portions comprise elastic clips having an elasticity for engagement and disengagement of said pivot projection and said pivot opening;
• said cover means further comprises attachment means disposed adjacent said first opening, said attachment means being configured for attachment of a rotary actuator to said cover means;
• said attachment means comprises a projecting surface disposed on said cover means, said projecting surface having an outside dimension and a rotary actuator having an inside dimension;
• and
• said outside dimension of said projecting surface substantially corresponding to an inside dimension of a rotary actuator for overlapping of a rotary actuator about said projecting surface.

An enclosure for an electrical switching device, the enclosure comprising:

• a first enclosure portion, the first enclosure portion comprising;
• a base portion;
• a plurality of side wall portions extending substantially perpendicularly from the base portion, the side wall portions having a first edge for being disposed adjacent the base portion and a second edge disposed away from the base portion, the side wall portions and the base portion defining an interior of the enclosure, the interior for housing at least one electrical switching device, and the second edge of the side wall portions defining an opening for access to the interior of the enclosure;
• cover means for closing the opening of the first enclosure portion, said cover means having a closed position adjacent the second edge of the side walls and an open position away from the second edge of the side walls, and said cover means comprising an opening therein, said opening in said cover means being configured for providing exterior access to an electrical switching device disposed in said interior of said enclosure when said cover means is in the closed position;
• hinge means for hingedly attaching said cover means to the first enclosure portion for pivoting of said cover means towards and away from said first enclosure portion to open and close said opening;
• and
• said cover means further comprises fastening means for fastening one of:
• a mechanical rotary actuator, and
• a motor drive to said cover means adjacent said opening of said cover means.