Nader Circuit Breaker

When designing and selecting low-voltage circuit breakers, the general principles that need to be considered are: Determine the type of circuit breaker to be selected according to the load nature, fault category and line protection requirements of the low-voltage power distribution system, and comply...

When the circuit breaker is used as upper and lower protection, its action should be selective, and the upper and lower levels should cooperate with each other, and pay attention to the following issues: 1) When the upper and lower actions of the circuit breaker are selective, attention should be pai...

The general selection principle of automatic air switch is: (1) Determine the type and protection form of the circuit breaker according to the protection requirements of the line-determine the choice of frame type, device type or current limiting type. (2) The rated voltage of the automatic air switc...

The rated short-time withstand (thermally stable) current of a high-voltage circuit breaker refers to the effective value of the current that the circuit breaker can withstand when the circuit breaker is in the closed position during the rated short-circuit duration under the specified use and perfor...

The rated peak withstand current (dynamic stability) of a high-voltage circuit breaker refers to the first half-wave current peak value of the rated short-term withstand current that the circuit breaker can carry under the specified use and performance conditions at the closing position. The duration...

Some people say that air circuit breakers and earth leakage circuit breakers can be used together. Because the leakage circuit breaker has one more leakage protection module than the circuit breaker, the structure of the two is similar, the ordinary circuit breaker can add auxiliary components to cha...

A circuit breaker is a switching device that can close, carry and break the current under normal loop conditions, and can close, carry and break the current under abnormal loop conditions (including short-circuit conditions) within a specified time. Circuit breakers can be used to distribute electric...

The air switch is used as a main power protection switch or branch line protection switch in the household power supply. When a short circuit or overload occurs in residential wiring or household appliances, it can automatically trip and cut off the power supply, thereby effectively protecting these ...

The current leakage switch generally integrates leakage protection, overload protection, short circuit protection and other functions, but the leakage circuit breaker has more leakage protection function than the circuit breaker. The question of how to install correctly is in principle: Regardless of...

1. Internal structure If the 4 rivets are damaged, you can split them in half, as shown in the figure below. The parts are embedded in the left cover, and the right cover can be removed. 2. Circuit part When the contact is closed, the circuit path is (set the direction from top to bottom): 1-2-3-5-6-...