Slide the sealing gland and compression gland up the wire and into the plug. You don’t need to stress about mismatching the terminals and plug bodies, as male and female pins won’t fit into the incorrect plugs. Keep pushing until it clicks into position. Step 5 – Insert the Terminal into the Plug BodyĪfter crimping the wire to the terminal, insert/push the terminal into the connector plug. Again, this ensures it does not fan out when crimped, which could create issues when inserting it into the plug. Then, press the handle fully to finish the crimping. Besides, this will grip the terminal, allowing you to insert the wire easily. ![]() Make sure the open ends of the terminal face upwards. Now, you can put the terminal into the crimp tool. ![]() The stripped wire should extend slightly into the barrel of the terminal. Insert the stripped wire into the MC4 crimp terminal. Be very careful and avoid any damage to the metallic strands. Step 4 – Strip the wire and Crimp the Terminalįirst, strip the wire about 1/4 of an inch. Make sure to do this in the correct order. Slide the compression nut, compressing clamp, and watertight seal onto the stripped wire. But make sure you do this before installing the MC4 connectors. ![]() You can slide some adhesive-lined dual-wall shrink over the wire if you want a polished appearance. Strip the outer jacket of the solar cable. Step 2 – Strip the Outer Jacket of the Solar Cable You will need MC4 connectors, a solar cable, a wire cutter, a wire stripper, an MC4 crimp tool, and an MC4 connector tool. How to Crimp MC4 Connectors – A Step-by-Step Guideīefore you start, ensure you have all the necessary tools and materials. They can maintain a high contact reliability degree in challenging conditions like high humidity, higher dust levels, and wide-ranging temperatures. MC4 connectors are essential in solar installations because they ensure a stable and safe connection between the solar panels and the inverter or charge controller. Importance of MC4 Connectors in Solar Installations The male and female connectors go together until they click into place, forming a watertight seal. One inserts the terminal into the rubber seal, which later goes into the connector housing. Water Sealing Gland-Female MC4 connectorĮach MC4 connector has a single terminal made up of a metal sleeve crimped onto the stripped end of the solar panel wire.Gland Ring for compression-Female MC4 connector.Let’s look into the individual elements of the female connector. Gland Compressing Ring-Male MC4 connector.Let’s look into the individual elements of the male connector. Furthermore, the housing allows the connectors to be locked together and provides weatherproof protection. The female connector has a socket that connects to the male pin. Components of MC4 Solar ConnectorsĪn MC4 connector is a single housing and two types of connectors (male and female). However, a disassembly tool is needed to disconnect them, ensuring they don’t come apart unintentionally if the cables tug. Users can push the connectors from adjacent panels together by hand to establish a connection. MC4 solar connectors help in the easy assembly of solar panel strings. They also provide an IP67 waterproof and dustproof safe electrical connection, making them ideal for outdoor use in solar panel installations. The term MC4 stands for “Multi-Contact, 4mm pin diameter”, which signifies the technology behind these connectors. MC4 connectors are a type of solar connectors commonly used in the solar industry. Understanding the MC4 Connectorsīefore getting into “how MC4 connectors are crimped”, let’s first get into the basic understanding of MC4 connectors. In simple terms, to crimp an MC4 connector:įollow our detailed steps for a successful assembly. This guide breaks down the process of crimping these connectors. Press the crimping tool until the wire is properly crimped.MC4 connectors are essential in solar installations, ensuring safe and stable connections between solar panels and other devices. ![]()
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