POWER SUPPLY CONTROL DEVICE

PROBLEM TO BE SOLVED: To facilitate the reduction in power source line, the change of an electric load-side wire harness, or a safety countermeasure to short-circuit or overcurrent by arranging an centralized control device or a power source supplying device near the position where electrical apparatuses are collected, and forming a power source supplying output terminal into a form for mounting an attachment. SOLUTION: This power source supplying device is formed of a connector converting module 6b replaceable with a central part 6a for reading switch information, interrupting or supplying power to an electric load, or performing a multiple communication. When the wire harness-side connector to the electric load to be connected is changed, the connector converting module 6b makes the central part 6a flexibly conform thereto without changing it. A PTC element or fusible fuse is built in the replaceable connector converting module 6b, whereby it can conform to the load to be protected by a double system with a protecting function built-in type switching element used for the driving element of the central part 6a.