• page_banner
  • page_banner

News

The introduction of solar cable connecter

An average PV system employs way more than 100 connectors. If you don’t pay enough attention to these seemingly insignificant components, any of the connections can render your system inoperable.
What type of connectors are used for solar panels?

Connectors are small but vital parts of any PV system. As the name suggests, they are used to connect solar panels – to each other, to the inverter, or to the module-level devices like power optimizers. Solar panel connector types are many: MC4, T4, MC3, only to name a few.

图片2

Some manufacturers use generics, which are almost always compatible with a mainstream MC4 connector and are easy to identify. Just look for phrases like ‘MC4 compatible’ in the datasheet. Unfortunately, most of the time such a combination won’t constitute a UL rated connection.

MC4 connector is by far the most popular type. So much so that nowadays almost all solar panels and module-level devices, such as power optimizers and microinverters, come with it. These connectors are UL certified and comply with the National Electric Code.

The letters MC stand for Multi-Contact – the brand name of the manufacturer that became associated with the product. The connectors are made from UV resistant material and have an IP67 rating, meaning they are fully weatherproof.

图片3

MC4 connectors feature a locking mechanism that can only be unlocked with a special tool for more reliability. Each solar panel has two connectors: male and female. They are positioned at the ends of the junction box wires. One is positive and the other is negative. As a rule, the female connector is attached to the positive lead. However, there are exceptions, so it’s best to look for the markings or perform a voltmeter test.


Post time: Dec-19-2022