Nader Circuit Breaker

It is the most widely used terminal protection electrical appliance in building electrical terminal power distribution devices. It is used for single-phase and three-phase short-circuit, overload, overvoltage protection under 125A, including single-pole 1P, two-pole 2P, three-pole 3P, and four-pole 4...

In the event of a power failure, the air switch will trip by itself, generally because the air switch has an undervoltage trip protection device. When the power fails, the undervoltage release will trip. The working principle of undervoltage release (see the figure below): 1. When the line voltage is...

5 selection principles for low-voltage circuit breakers: (1) Determine the type of circuit breaker selected according to the load nature, fault category and line protection requirements of the low-voltage power distribution system, and comply with the current relevant national standards. (2) The rate...

1. Breaker insertion operation process The circuit breaker needs to be in the open state, place the handle of the plug-in mechanism in the position shown in Figure 1, and then slowly put the circuit breaker into the rail groove of the base, turn the interlock device to the unlocked position, and then...

At present, in the power distribution network with voltage levels of 10KV and below, vacuum circuit breakers have gradually replaced oil circuit breakers, and have played an active role in the process of oil-free transformation. Compared with oil circuit breakers, vacuum circuit breakers have the adv...