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What Does MC4 Solar PV Connector Mean?

The MC4 photovoltaic connector is an electrical connector designed specifically for solar photovoltaic systems. Its full name is "Multi-Contact 4" and it was developed by the Swiss company Multi-Contact AG in the 1980s. It is mainly used to connect solar panels and other solar components, such as inverters and controllers, to ensure efficient and safe transmission of electrical energy. Here are some important features and applications of the MC4 photovoltaic connector:


Main Features:

Waterproof and Dustproof Performance:

MC4 connectors usually have an IP67 or IP68 protection level, which can effectively prevent the intrusion of moisture and dust and are suitable for use in various outdoor environments.


Easy Plug-in Design:

The connector adopts a plug-in design, which makes installation and removal more convenient and quick, especially suitable for systems that require frequent maintenance.


High Electrical Conductivity:

The MC4 connector uses high-quality metal materials and has good electrical conductivity, ensuring stable transmission of electrical energy and reducing power loss.


High Temperature and Chemical Corrosion Resistance:

The material of the MC4 connector can work stably in the temperature range of -40°C to +90°C, and has good tolerance to a variety of chemicals and is suitable for harsh environments.


Safe and Secure Connection:

It is designed with a locking mechanism to ensure stable connection, reduce the risk of electrical flashover and short circuit, and improve the overall safety of the system.


Relationship between E-Weichat PV4 and MC4:

The PV4 connector is a solar photovoltaic connector independently developed by E-Weichat. Its function is the same as that of MC4, but its appearance design is different. E-Weichat PV4 photovoltaic connector is also commonly used to connect photovoltaic modules. It is benchmarked against photovoltaic products of major manufacturers such as Amphenol and TE, and can be compatible with them.Like MC4, E-Weichat PV4 connectors are waterproof, dustproof and weather-resistant to ensure reliable operation in harsh outdoor environments.


solar photovoltaic connector.jpg

（E-Weichat PV4 Photovoltaic Connector Part of The Product Display）


The advantage of the E-Weichat PV4 connector is its flexibility and expandability.It can be customized according to the needs of the photovoltaic system to meet different current carrying capacity and other requirements.In addition, E-Weichat PV4 photovoltaic connectors can also be customized to varying degrees, including no LOGO/OEM.


Application Areas:

Solar photovoltaic system: mainly used to connect solar panels with inverters, charging controllers and other equipment to form a complete photovoltaic power system.


Outdoor Equipment and Facilities: Widely used in various outdoor photovoltaic power generation systems, street lights, security monitoring, mobile power supplies, etc.


Other Renewable Energy Systems: It can also be used for the electrical connection of other renewable energy equipment, such as wind power generation systems.


MC4 photovoltaic connector has become a standard connector in the photovoltaic industry because of its excellent performance and reliability.It is able to provide a stable electrical connection under various environmental conditions and is a key factor in ensuring the efficient operation of solar energy systems.Choosing MC4 connectors will help improve the overall efficiency and safety of the photovoltaic system.

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