This is a collapsible, mobile maintenance unit for medium-voltage switchgear with specific dimensional and clearance requirements. It must include roof-mounted PT/CPT, outdoor aisle switchgear with two rollout trays, and raised switchgear pads. The unit requires a rear winch, four swivel wheels, and must meet minimum front aisle, side clearance, and door swing specifications. It must be compatible with GE Type VB1 breakers and GE PowerVac metal-clad switchgear. The unit must handle a 900 lb load, with a height of 87 inches ±1.5 and a reach of 69.5 inches ±2, complete with all components.