Service plug having a lever mechanism for positioning circuit terminals and short-circuiting terminals

A service plug, comprising:

• at least a pair of circuit terminals respectively connected to an end of an open electric circuit;
• a circuit housing provided with said pair of circuit terminals therein and terminal insertion holes corresponding to said pair of circuit terminals;
• a pair of parallel guide walls extending perpendicularly from a surface of said circuit housing on which said insertion holes for said pair of circuit terminals are formed;
• at least one guide groove formed on each of said parallel guide walls, being open on respective end faces of said guide walls, and formed along a fitting direction of said pair of circuit terminals;
• a plug body provided with short-circuiting terminals for short-circuiting said pair of circuit terminals;
• a lever rotatably coupled to said plug body via a turning shaft;
• and
• bosses protruding from said lever for respectively entering said guide grooves and positioning said pair of circuit terminals and said short-circuiting terminals so that said short-circuit terminals move in the fitting direction toward said pair of circuit terminals.