Hidden/sliding door system for field-installed accessory access

An electrical switching apparatus comprising:

• an electrical switching apparatus housing assembly defining an enclosed space;
• a number of fixed contacts and a number of movable contacts, wherein each said movable contacts is movable between an open, first position, wherein the movable contact is spaced from a fixed contact, and, a closed, second position, wherein the movable contact is directly coupled to, and in electrical communication with, a fixed contact;
• an operating mechanism, wherein said operating mechanism is operatively coupled to each movable contact and is structured to move each movable contact, said operating mechanism movable between two configurations, a first configuration, wherein each the movable contact is spaced from a fixed contact, and, a closed, second configuration, wherein each movable contact is directly coupled to, and in electrical communication with, a fixed contact and wherein said operating mechanism is biased toward said first configuration;
• said electrical switching apparatus housing assembly including:
• a body assembly including a number of outer sidewalls;
• said outer sidewalls defining an enclosed space;
• said outer sidewalls including a top sidewall;
• said top sidewall including a limited opening to said enclosed space;
• a movable door member, said door member movably coupled to said top sidewall;
• and
• wherein said door member is movable between an open, first position, wherein said door member is not disposed in said limited opening, and a closed, second position, wherein said door member is disposed in said limited opening.