Air circuit breaker

Abstract

In an air circuit breaker, in order to provide a position indicating apparatus of a draw out type air circuit breaker which is capable of distinguishing a position of a breaker body accurately even a user can not distinguish colors by improving a structure for indicating a position of the breaker body, in a position indicating apparatus of an draw out type air circuit breaker comprising a lead bar rotatably placed at a base frame and moving in a direction opposite to a moving direction of a lead screw by abutting to one wall surface of a cradle and a cam connected to the lead bar and rotating by the linear movement of the lead bar, the position indicating apparatus includes a movable plate connected to the cam and converting the rotation of the cam into the vertical linear motion, an indicating cam connected to the movable plate, converting the vertical linear motion of the movable plate into the rotation motion and having a portion indicating a position of the breaker body according to the rotation, and a front plate placed at the front of the movable plate and selectively indicating a position of the breaker body according to the rotation of the indicating cam.

Description

technical field [0001] The present invention relates to a draw out type air circuit breaker, in particular to a draw out type air circuit breaker which can accurately distinguish disconnection position, test position and connection position when the circuit breaker is pushed in / out of a bracket . Background technique [0002] Generally, air circuit breakers are installed between electrical loads and power sources to protect load equipment such as motors and converters, and to prevent abnormal currents (short circuits) that occur on lines such as power transmission / distribution lines and dedicated power transmission equipment. , ground fault, overload current). In particular, an air circuit breaker is a circuit breaker for eliminating arcs generated in the air at the time of opening / closing contacts. [0003] The air circuit breaker is divided into fixed type and drawer type. The fixed type is installed between the power supply and the load. The draw...

AI Technical Summary

Problems solved by technology

[0025] In order to solve the above problems, an object of the present invention is to provide a drawer-type air compressor that can accurately distinguish the position of the main body of the circuit breaker even when the user cannot distinguish the colors by improving the structure of the position indicating device. Circuit breaker position indicating device

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