Circuit breaker protector and junction box thereof

Abstract

The invention discloses a circuit breaker protector and a junction box thereof, and mainly belongs to the field of circuit breakers. The circuit breaker protector comprises a circuit breaker and a junction box matched with the circuit breaker. A sealing gasket is arranged on the periphery of a wire containing cavity shell; wiring ports on the upper side and the lower side of the circuit breaker are located on the rear side of the wire containing cavity shell; an acid gas drying agent is arranged in a waist-shaped groove; semiconductor thermoelectric refrigeration sheets are respectively arranged in the wire containing cavity and the inner cavity of the circuit breaker; the inner cavity of the circuit breaker is also provided with an electrochemical gas sensor; and a grounding failure early warning protection device is arranged in the circuit breaker. The circuit breaker protector can be well suitable for production workshops in the strong acid environment; the wiring ports of the circuit breaker can well prevent moisture and corrosion, and internal heat dissipation of the circuit breaker can be realized in a novel mode; and the grounding failure early warning protection device not only can continuously keep safe operation under the condition of grounding failure to avoid accidents, but also can carry out grounding failure early warning to carry out follow-up maintenance.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to a circuit breaker and a junction box thereof. Background technique [0002] Generally, the production sites of enterprises with high air pollution and high environmental protection requirements are generally in the suburbs, especially some chemical plants. For production workshops in strongly acidic environments, the existing wiring ports of circuit breakers are exposed, which are easily damaged by environmental corrosion and cause accidents. Therefore, the moisture-proof and anti-corrosion design of circuit breakers is also a top priority. Since the air in the production workshop in a strongly acidic environment is filled with acid gas, the fan cooling method can no longer be used to dissipate heat from the circuit breaker, because the fast air flow of the fan cooling method will aggravate corrosion, so a new cooling method is needed to solve the internal cooling problem. [000...

AI Technical Summary

Problems solved by technology

Due to the strong acidic environment, the air in the production workshop is filled with acid gas, and the fan cooling method can no longer be used to dissipate heat from the circuit breaker. Because the fan cooling method is fast, the air flow will aggravate corrosion, so a new cooling method is needed to solve the internal cooling problem.

[0003] In addition, there are many outdoor rodents and they generally settle in the factory area where the physical objects are relatively easy to obtain. Rats have sharp teeth. If the wiring cabinet is forgotten or closed tightly, it can bite through the thicker line insulation protection in the wiring cabinet. And when crawling, because of its long tail, the body crosses the two phases of the switch, which will cause the circuit breaker to short circuit between the phases and cause the switch to trip, thus causing a large area of ​​power outages.

Since multiple circuit breakers controlling different equipment in the wiring cabinet in the factory are often switched on and off, workers will not lock the door of the wiring cabinet in many cases, so the market is not closed tightly when it is closed. Therefore, if the circuit breaker can be disconnected It is best to improve on the server to avoid the above problems

[0004] In addition, the current power cabinets generally do not have a poor grounding warning and protection device. Poor grounding will cause the voltage between the power line and the ground to rise and leakage will cause the shell to be charged, which will cause harm to personal safety when touched. Affect the normal operation and safety of the equipment

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