What is a terminal block cover? What is a socket with a protective contact?

It is a product commonly known as crystal head on our network line.

Terminal block is a kind of accessory product used to realize electrical connection, which is divided into the category of connectors in industry. With the increasing degree of industrial automation and the increasingly strict and accurate requirements of industrial control, the amount of terminal blocks is gradually increasing. With the development of the electronics industry, the range of use of terminal blocks is increasing, and the variety is also increasing.

At present, in addition to PCB board terminals, the most widely used are hardware terminals, nut terminals, spring terminals and so on.

In order to effectively solve the phenomenon of oxidation, rust and signal interference caused by the long-term erosion of harmful gases and dust in the air, the terminal protective sleeve has been developed and developed by our company (Chinese patent is on file). The design of the connector terminal protection sleeve is small and exquisite, beautiful in shape, bright in color, inexpensive, economical and practical. In the first class, audio input, output series products to install the terminal protective sleeve, not only to increase the appearance of the product, but also to effectively prevent dust, protect the terminal from oxidation, rust, at any time in the future need to enable the terminal as long as gently dial out the protective sleeve, bright as ever, good contact performance of high-quality terminals are presented in front of the user.

In general, the socket with protective contact refers to the socket with a grounding wire, such as the 10A three-pin plug, which is the socket with the protective contact. The protective electrical socket can be connected to the socket that protects the ground and protects the zero connection.

There is a protective door in the jack of the two-pole socket, and when the door of the neutral pole is inserted into the plug first, the door of the phase line will be opened, and conversely, when the door of the phase pole is inserted first in the plug, the door of the phase wire will not be opened, and the misoperation is protected.

There is also a protective door in the jack of the three-pole socket, when the plug is inserted back into the door of the grounding electrode first, the two doors of the phase wire and the neutral line will be opened, on the contrary, when the door of the phase wire or the zero pole is inserted in the plug first, the door of the phase wire or the zero line will not be opened, and the misoperation is protected.

In the general sense, a protective contact refers to a grounding wire.

The socket, such as the 10A three-pin plug, is a socket with protective contacts. The protective electrical socket can be connected to the protective ground.

and the socket that protects the zero connection.

There is a protective door in the jack of the two-pole socket, and when the door of the neutral pole is inserted into the plug first, the door of the phase wire will also be opened, and vice versa, when the plug is inserted into the phase wire first.

The door of the phase line will not be opened, so it is protected from misoperation.

There is also a protective door in the jack of the three-pole socket, which is inserted back into the ground terminal when the plug is inserted first.

On the contrary, when the door of the phase or neutral pole is inserted into the plug first, the door of the phase wire or neutral pole will not be opened, which protects the misoperation.

The protective contact socket can be connected to the socket that protects the ground and protects the zero connection.

It is to prevent children from accidentally inserting metal objects into sockets and causing electric shock accidents.

To put it bluntly, it is:

There is a protective door in the jack of the two-pole socket, and when the door of the neutral pole is inserted into the plug first, the door of the phase wire will also be opened, and conversely, when the door of the phase pole is inserted first in the plug, the door of the phase wire will not be opened, and the misoperation is protected.

There is also a protective door in the jack of the three-pole socket, when the door of the grounding pole is inserted in the plug first, the two doors of the phase wire and the neutral line will be opened, on the contrary, when the door of the phase wire or the zero pole is inserted in the plug first, the door of the phase wire or the zero line will not be opened, and the misoperation is protected.