An electronics cabinet can include a cylindrical housing, providing a wall defining an interior space for locating electronics equipment therein. A cylindrical section door can be located in an access cutout defined by the wall. An internal hinge can attach an interior of the door to an interior of the wall of the cylindrical housing. The internal hinge can include a pivoting curved hinge arm. The internal hinge can also include wall mount, configured to be attached to the interior of the wall of the cylindrical housing. The internal hinge can also include a pivot connection between the hinge arm and the wall mount. The internal hinge can also include a catch, integrated with or attached to the hinge arm, the catch configured for self-engagement to inhibit opening of the door beyond a specified door opening angle, and to permit closing of the door only upon manual user-disengagement.