The need for the installation of circuit breakers in the switchboard at the input of electricity into the apartment is understandable to everyone. But in such cases, devices are used that are connected to a single phase and often have a low rated current. Connecting a voltage of 380 V requires other equipment with higher power. Today we will talk about what a 3-pole circuit breaker is, what types of similar devices are and how they are connected.
Features of connecting AB to 3 poles and its principle of operation
Through such machines, equipment requiring high voltage is not always connected. Often in the switchboard, wiring is made, after which each phase goes to a separate lighting group or power supply for household electrical appliances. However, if you need to install AB as an introduction, you should give preference to a protective device with four contacts. It breaks along with food the zero core. In the event of a breakdown, it can also be energized.
An automatic 3-pole switch is designed to simultaneously cut off all three phases in the event of an overload or short circuit in the power network. The current characteristics of the device will depend on the number and power of devices connected through similar equipment. For private homes do not require high rates for this parameter, which can not be said about the industrial use of AB. In such cases, 3-pole circuit breakers 100A and higher are used.
Popular power line protection equipment manufacturers
Today, on the shelves of electrical stores, the range of such devices is quite extensive. The same applies to manufacturing companies that produce similar products. The 3-pole circuit breakers ABB , Schneider Electric, Tech Controllers are in greatest demand. There are many other brands, but their popularity among the Russian population is lower.
As for brands whose name says nothing at all, you should not buy them, even if the price is quite attractive. No need to take risks when installing protective equipment, because the result can be much more expensive. It is better to purchase a more expensive and branded 3-pole circuit breaker and be calm about the condition of the home power network.
What can be added to what has been said?
Protective automation must ensure complete safety. Whether the network is overloaded, burned out and shorted the wire - the task of AB to relieve voltage in time to avoid more serious consequences. This is especially true in high voltage networks. This means that by acquiring a high-quality 3-pole circuit breaker, a person gives peace to loved ones. In addition, he eliminates the need to constantly monitor the number of household appliances included in the sockets.