Under-voltage tripper

Abstract

The invention discloses an under-voltage tripper. The under-voltage tripper comprises a pedestal, and is characterized in that a connecting rod, a first torsion spring, a toggle joint, a rocker arm, a second torsion spring, a lock catch, a hopping catch, a jacking rod, a rocker device and a conducting system are arranged in the pedestal, wherein the toggle joint is formed by connecting a manually operated handle and a driving connecting rod; and a striking pin of an electromagnetic relay is contacted with the lock catch. When an under-voltage tripper mechanism of the under-voltage tripper is tripped, an operating mechanism main lever of the under-voltage tripper returns to drive the connecting rod of a linkage mechanism to move, and the connecting rod drives a mechanism of a breaker spliced with the under-voltage tripper to be tripped at the same time; on the contrary, when being tripped, the breaker mechanism drives the connecting rod in the linkage mechanism of the under-voltage tripper to move, and the connecting rod drives the tripping mechanism of the under-voltage tripper to be tripped at the same time, so that linkage between the under-voltage tripper mechanism and the breaker mechanism is realized. The linkage between the under-voltage tripper mechanism and the breaker mechanism is realized, so that one breaker can reliably splice a plurality of trippers.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to an undervoltage release that can be used in conjunction with a DZ47 miniature circuit breaker. Background technique [0002] The undervoltage release is mainly used for line undervoltage protection. It is used in conjunction with the DZ47-60 miniature circuit breaker to achieve the following control purposes: when the voltage is less than 30% of the rated voltage, ensure that the circuit breaker cannot be closed; when the voltage is 35%-70% When a certain value is within the rated voltage range, it is closed, and when the other values ​​are tripped, the circuit breaker trips and remains unclosed; when the voltage is within 85%-105% of the rated voltage range, the low-voltage release does not operate, and the circuit breaker remains closed. normal work. [0003] At present, the undervoltage release used in conjunction with the DZ47-60 miniature circuit breaker on ...

AI Technical Summary

Problems solved by technology

[0003] At present, the undervoltage release used in conjunction with the DZ47-60 miniature circuit breaker on the market mainly has the following problems: the undervoltage release mechanism and the assembled circuit breaker mechanism can only be linked in one direction, and when the circuit breaker is disconnected , the undervoltage release can only be driven back by the restoring force of the handle. When the circuit breaker is assembled with multiple releases, the circuit breaker cannot drive the release to disconnect. One circuit breaker can only assemble one accessory product

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