Safety shutter apparatus for withdrawable circuit breaker

PURPOSE: A safety shutter device of a withdrawable circuit breaker is provided to improve reliability of a product by comprising an assembly of finger terminals with terminals of a circuit breaker body. CONSTITUTION: A cradle is electrically connected to a power circuit and includes a first terminal with a narrow width. A circuit breaker body(20) includes a second terminal(20b) which is wider than the first terminal. A shutter assembly(40,60) moves between a first position and a second position. A shutter operating bar(30) rotates around a hinge axis support point of a cradle. A terminal through-hole allows the first terminal of the cradle to pass. A shutter plate is comprised of a first shutter plate and a second shutter plate. A guiding device guides the horizontal movement of a shutter assembly.