Abstract: For latching an equipment unit door of an equipment unit in a control center, an apparatus includes a latch pin, the unit socket, and a structure socket. The latch pin includes a latch shaft with a latch interface disposed on a pin proximal end and a latch wing disposed on a pin distal end. The latch pin rotates to one of an open position, a unit latch position, and a structure latch position. The unit socket passes the latch wing in the open position and obstructs the latch wing from moving in a proximal direction in the unit latch position. The structure socket passes the latch wing in the unit latch position and obstructs the latch wing from moving in the proximal direction in the structure latch position.