What is the difference between GX12 and GX16 connectors?

2025-04-08

Connectors are very important components in industrial equipment, communication systems, automotive electronics, and other electrical applications. They play a key role in electrical connection and signal transmission, and the common GX12 and GX16 connectors on the market are two widely used connectors in many industrial systems and equipment. They are adopted by many industries for their reliability, rugged design, and stable performance in harsh environments.

Although both GX12 and GX16 connectors belong to the circular connector series and have similar functions in many applications, there are certain differences between them.


In this article, we will deeply analyze the differences between GX12 and GX16 connectors, explore their design, structure, specifications, and applicable scenarios to help users choose the connector that suits their needs.

GX16 connector


GX12 and GX16 connectors: What are they?

Both GX12 and GX16 connectors belong to the category of circular industrial connectors. They are usually composed of plugs and sockets and are widely used for electrical connections. The appearance of these two connectors is very similar, usually metal shells with thread locking mechanisms to ensure the stability and reliability of the connection. Although they have similarities in appearance, they differ in size, application range, and electrical load they can withstand.


1. GX12 connector

The GX12 connector is a circular connector with a diameter of 12mm, which is usually used in smaller devices and low-power applications. Its design makes the GX12 connector compact and small, suitable for use in environments with limited space. The GX12 connector offers different numbers of contact points, ranging from two pins to up to 12 pins. This connector has good protection capabilities and can withstand certain mechanical stress, suitable for some light electrical equipment that requires a stable connection.


2. GX16 connector

The GX16 connector is very similar to the GX12 connector, but its appearance is slightly larger in diameter, usually 16mm. The GX16 connector usually carries higher currents and voltages and provides more contact points. Due to its larger size, the GX16 connector has higher mechanical strength than the GX12 connector and is suitable for electrical equipment that carries more power. GX16 connectors also have good protection capabilities and can maintain stability in complex environments.

GX12 connector

What is the difference between GX12 and GX16 connectors?

Although GX12 and GX16 connectors are similar in some aspects, there are still some key differences between them, mainly in terms of size, load capacity, electrical performance, and scope of application. The following is a detailed analysis of the differences between the two:


1. Size and appearance

Size is one of the most obvious differences between GX12 and GX16 connectors. The outer diameter of the GX12 connector is 12mm, while the outer diameter of the GX16 connector is 16mm. This size difference means that the GX16 connector is larger in space, so it can provide more contact points and higher current carrying capacity.


● GX12 connector: 12mm outer diameter, usually used for small devices and low-power applications.

● GX16 connector: 16mm outer diameter, suitable for applications that require greater power transmission and generally require more contact points.


Therefore, when choosing between these two connectors, the size difference needs to be determined based on the space requirements of the device. If the device space is small and the electrical load is low, the GX12 connector is an ideal choice; for devices with higher power or requiring more contact points, the GX16 connector should be selected.


2. Number of contact points and configuration

The number of contact points of the GX12 and GX16 connectors also differ. Generally, the GX12 connector offers different configurations from 2 pins to 12 pins, while the GX16 connector offers more contact point options, usually ranging from 4 pins to 16 pins. This means that the GX16 connector can be used for signal transmission of more channels and is suitable for more complex application requirements.


● GX12 connector: The number of contact points is usually less, up to 12 pins, suitable for signal transmission and low power applications.

● GX16 connector: The number of contact points is higher, up to 16 pins, suitable for more complex electrical systems such as power transmission, data communication, etc.


The difference in the number of contact points is one of the key factors affecting the selection of these two connectors. Applications that require more connection points, such as systems that require multi-channel signal transmission or shared power and signal transmission, should choose GX16 connectors.


3. Electrical carrying capacity

Electrical carrying capacity is another important factor that distinguishes GX12 and GX16 connectors. Since the GX16 connector has a larger size, it can support higher current and voltage, so it is suitable for high power transmission. The GX12 connector is usually used for low power or lighter electrical loads due to its smaller size.


● GX12 connector: Suitable for applications with lower current and voltage, the rated current is usually between 2A and 5A, and the rated voltage is usually 250V.

● GX16 connector: With higher current carrying capacity, the rated current is usually between 5A and 10A, and the rated voltage can reach 500V or higher.


Therefore, the selection of a suitable connector needs to be determined according to the actual electrical needs. If higher power transmission is required in the application, the GX16 connector is a more suitable choice.


4. Protection performance

GX12 and GX16 connectors are similar in protection capabilities and usually have a higher protection level to prevent the intrusion of external factors such as dust and moisture. Their protection level can often reach IP65 or IP67, which means that the connector can prevent dust from entering and is waterproof to a certain extent.

However, due to the larger size and more stable structure of the GX16 connector, the GX16 connector may provide higher pressure resistance and mechanical shock resistance than the GX12 connector when facing harsh external environments.


5. Application scenarios

Due to the differences in electrical carrying capacity, size and number of contact points between the GX12 and GX16 connectors, they are usually used in different application scenarios. GX12 connectors are usually used in small and low-power devices, such as some sensors, communication systems, small industrial equipment, etc.; while GX16 connectors are suitable for equipment that requires more power and more contact points, such as power tools, power systems, high-power industrial equipment and automation control systems.


● GX12 connector: used for small devices, low-power applications, and signal transmission.

● GX16 connector: used for higher-power electrical devices, multi-signal transmission, and industrial control systems.

GX16 connector

Choose GX12 connector or GX16 connector?

When choosing between GX12 connector and GX16 connector, users need to consider multiple factors, mainly including the following:


● Electrical load requirements: If the current and voltage requirements of the device are high, it is more appropriate to choose a GX16 connector; if the current of the device is small, the GX12 connector can meet the needs.

● Equipment space constraints: If the space of the device is very limited, it is more appropriate to choose a smaller GX12 connector; but if there is ample space and more contact points or stronger electrical carrying capacity are required, a GX16 connector can be selected.

● Contact point requirements: If more electrical contact points are required for signal transmission or multi-way power transmission, choose a GX16 connector; if it is just a simple signal transmission or low-power connection, a GX12 connector can meet the needs.

GX12 connector

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