Small-sized remote control circuit breaker

Abstract

The invention relates to a small-sized circuit breaker by remote control. In the prior art, when a present small-sized circuit breaker by remote control is tripped, there is an induced voltage at a load end of the circuit breaker, so that the circuit breaker has poor safety performance. However, the above-mentioned problem can be solve by utilizing the small-sized circuit breaker by remote control provided in the invention. The circuit breaker is characterized in that: a control circuit board (4) is provided with a terminal (9) that has a jack (8) in the middle of the terminal; the terminal (9) is a connection point of phase lines; a bent steel wire (16) is arranged between an N-electrode circuit breaker (1) and a P-electrode circuit breaker (2); one end of the steel wire (16) passes through a through hole (11) and is inserted into the jack (8) of the terminal (9); and the other end of the steel wire (16) passes through a small hole (13) and is suspended between a moving contact (14) and a fixed contact (15), wherein the moving contact (14) and the fixed contact (15) are in a shell (12) of the P-electrode circuit breaker; when the moving contact (14) and the fixed contact (15) are closed, the moving contact (14) can contact with the steel wire (16). According to the invention, when the small-sized circuit breaker by remote control is in an off state, the load end has completely no induced voltage, so that the small-sized circuit breaker by remote control has a high security level.

Description

technical field [0001] The invention relates to a small circuit breaker, in particular to a remote control small circuit breaker. Background technique [0002] Miniature circuit breakers refer to low-voltage circuit breakers used on AC 50 / 60Hz rated voltage 230 / 400V and rated current below 63A. They are often used in industrial, commercial, high-rise and residential buildings. Existing remote control miniature circuit breakers mainly include 1P+N, 2P+N and 3P+N, where the P pole is connected to the phase pole, the N pole is connected to the neutral pole (neutral pole), and the P pole circuit breaker has overload, Short-circuit protection function, the N-pole circuit breaker includes moving contacts, static contacts, locks, jumpers, shunt releases and control circuit boards, the N-pole circuit breaker controls the on-off of the neutral line, and the P-pole circuit breaker The lock of the lock is linked with the lock of the N-pole circuit breaker through the connecting shaft....

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of the existing remote control miniature circuit breaker that there is an induced voltage at the load end of the circuit breaker and poor safety performance when tripping, the present invention provides a remote control miniature circuit breaker, which is in the disconnected state There is no induced voltage at the lower load end, which has the characteristics of high safety level, compact structure and convenient assembly

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