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Wonke Electric Co., Ltd is a professional manufacturer founded in 1999, specializing in electrical engineering with all kinds of terminal blocks, air fans filters, etc. We have our research and development team to bring out various kinds of products and solutions to meet the customers' requirements. Our products are widely applied to electronic equipment, machine building, plants engineering, process industry, etc. To complete internationally, your plants need to satisfy high standards of safety, quality and performance. These targets can be achieved with our products and services. We can help you bring new ideas and solutions for providing customers around the world, OEM is also support. This is also what we understand for services.

Latest News

  • April 16 2021

    ​How to Properly Use a Terminal Block

    How to Properly Use a Terminal Block A terminal block is one method of connecting a selection of different electrical wires. They come in a variety of shapes and sizes so you can normally find one that will be compatible with whatever project you are carrying out. However, the difference between blocks can lead to problems if an incorrect type is used or if it is not connected properly. Follow the advice below so you never have to worry about encountering these issues. Step 1 - Terminal Block Type Look at the electrical equipment you are working on to see what type of connection it requires; normally you will have either a screw-in or plug-in connection. Screw-in wires are placed inside the terminal block and screwed into position, and they are most common for equipment that does not require high voltage protection. A variation on the screw-in connection is one held in place by a spring mechanism. This connector can reduce the time spent on the job because you simply clip it into place instead of removing and re

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  • December 09 2020

    Terminal blocks ensure safe currents as well as safe wiring of installations

    From control panels for industrial productions to fuse boxes in private homes: Terminal blocks ensure safe currents as well as safe wiring of installations. Plastics used to manufacture terminal blocks have to meet high requirements for fire protection and mechanical and thermal properties. In electrical engineering, terminals are used to connect wires and cables. Continuous safe contact has to be ensured for the connection – mechanical fixing ensures this. Terminal blocks can be arranged in any order on a mounting rail and installed with a simple snap. This defines the mechanical properties required for this material: plastics used in this application must exhibit high elasticity and good toughness – or run the risk of breakage when snapping. Connections require sufficient stiffness and strength. When handling electrical power, sparking and fires may occur. Other requirements include high temperature resistance and heat aging resistance Plastics have electrical insulating properties, which generally recommends them for electronic applications. Terminals are produced in extremely large quantities by injection molding. Economic production requires short cycle times and low maintenance cost for injection molding tools and machinery. It is also necessary to be able to produce very low (0.4 mm) wall thicknesses with the plastic. In addition, good colorability of the material plays an important role: Different colors of the terminal blocks serve to differentiate between different functions (e.g. neutral conductor, protective conductor, etc.) and ensure safe installation.

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  • December 09 2020

    Terminal blocks may use one of several different methods to achieve wire connection.

    crew clamps use a screw to tighten the wire and make an electrical connection and are the classic, industry standard termination method. This type can accommodate a very wide range of wire sizes and provides a reliable connection. Spring clamps use the force of a spring to retain wire clamping. They represent a newer alternative to screw clamps and are particularly useful in applications using small wire diameters and limited working space. Insulation displacement connections (IDC) push the wire between two sharp pieces of metal, allowing a connection to be made without exposing any bare wire. Tab connections are designed to be inserted and removed rapidly without the need for soldering. They are also known as spade or blade terminals. Orientation Terminal blocks are commonly available with one of three different wire entry angles: 45°, 90°, or 180°. 90° and 180° types are also referred to as horizontal and vertical, respectively. Contact and Wire Specifications When discussing terminal blocks, the term "contact", also known as a position, way, or pole, refers to a wire attached to the block. The number of contacts is an important specification when considering a product, as a buyer is required to match this number with the number of wires necessary for a project or application. Contact pitch refers to the distance between each contact, measuring from the center of each hole or opening. Contact pitch is directly related to the number of contacts and is typically expressed in millimeters (mm). Terminal blocks are typically manufactured to accept a range of wire or conductor sizes. North American wire size is expressed in American wire gauge (AWG), which is a standard for non-ferrous wire conductor sizes. Higher AWG numbers represent smaller conductor diameters, and vice versa. For example, a typical AWG 12 household wire has a larger diameter than a AWG 22 teleph

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