Protective device for a hermetically sealed type compressor and a hermetically sealed compressor listing same

Electromotively driven compressor apparatus comprising a sealed casing having a terminal assembly mounted in a wall of the sealed casing, terminal pins mounted in the terminal assembly electrically isolated from one another and from the sealed casing, the terminal pins extending from the terminal assembly both inside and outside the sealed casing, an electric motor and a compressor mounted in the sealed casing, the compressor driven by the motor, a protective device mounted on the terminal pins of the terminal assembly within the sealed casing, the protective device having a protective device housing formed of electrically insulating material, the protective device housing having a bottom wall formed with terminal pin receiving holes for mounting the protective device on the terminal pins of the terminal assembly, sidewalls extending upwardly from the bottom wall of the protective device housing defining a motor protector seat, a motor protector disposed in the motor protector seat, electrically conductive terminal pin connectors mounted in the protective device housing and a fuse element interconnected with the motor protector, a skirt member formed of electrically insulating material extending outwardly from the sidewalls of the protective device housing on a side of the protective device housing facing the sealed housing of the compressor when the protective device is mounted on the terminal pins of the terminal assembly, the skirt member extending beyond the sidewalls of the protector device housing a selected distance to provide at least a predetermined insulation distance between electrically conductive parts of the protective device and electrically conductive parts of the sealed casing of the compressor and to block direct electrical discharge path between electrically conductive parts of the protective device and electrically conductive parts of the sealed casing of the compressor.