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M16 Circular connectors vs. Traditional Connectors: The innovative choice for industrial connections

M16 Circular connectors vs. Traditional Connectors: The innovative choice for industrial connections

May 21,2025
In multiple high-end fields such as industrial automation, rail transit, robotics, and new energy, the selection of connectors is directly related to the stability and reliability of the system. With the development trend of equipment miniaturization and functional integration, traditional connectors have gradually exposed many limitations. The M16 circular connectors, as a leader in the medium-sized connector market, is rapidly replacing traditional connectors and demonstrating strong capabilities in harsh environments.

This article will comprehensively compare the M16 circular connector with traditional connectors from multiple dimensions such as structural performance, electrical characteristics, and environmental adaptability, helping you better understand its value in industrial applications.
1. Comparison of Structural Design
Project
M16 circular connector
Traditional connectors (such as rectangular terminals, universal terminal blocks)
Size and Layout
Compact circular structure, space-saving, supports high-density wiring
It is usually large in volume and occupies a considerable amount of installation area
Size and Layout
Threaded locking/push-pull quick lock, stable connection
Most of them are snap-fit or plug-and-pull types and are prone to loosening
Core number configuration
2 to 8 cores or more, supporting power + signal mixing 
The core number is limited and the structure is separated
Advantage Analysis: The M16 connector features a standard circular housing and is compatible with various termination methods (soldering, crimping, and solder plate), making it more suitable for applications with limited space and high installation accuracy requirements.
M16 circular connector
M16 circular connector
M16 circular connector plug
M16 circular connector plug
2. Electrical performance comparison
Project
M16 circular connector
Traditional connectors (such as rectangular terminals, universal terminal blocks)
Rated voltage
It can reach 250V
It generally does not exceed 150V
Rated current
Usually 5A, and some models support higher currents
Mostly 1 to 3A
Contact resistance
As low as 5mΩ, with high transmission efficiency
High contact resistance is prone to heat loss
Shielding design
It supports a shielded housing and has strong anti-electromagnetic interference ability
Most have no shielding function and weak anti-interference ability
Advantage Analysis: In systems that require stable high current transmission, low power consumption, and high anti-interference capabilities, the M16 connector offers more reliable performance and can effectively enhance the efficiency and security of the entire system.
M16 connector pre-molded cable
M16 connector pre-molded cable
M16 connector pre-molded cable
M16 connector pre-molded cable
3. Comparison of environmental adaptability
Project
M16 circular connector
Traditional connectors 
Protection grade
It can reach IP67/IP68, being waterproof and dustproof
Most of them are below IP20 and cannot be used outdoors
Working temperature
-40℃ to +85℃ or higher
It is mostly between -10℃ and +60℃
Corrosion resistance
The metal nickel-plated shell and sealing ring design are oil-proof and resistant to chemical corrosion
Exposed terminals are prone to oxidation or corrosion
Advantage Analysis: For outdoor equipment, heavy industrial sites, shipping or new energy systems, M16 connectors have stronger weather resistance and environmental protection capabilities, far exceeding traditional products.
4. Comparison of Application Flexibility
Project
M16 circular connector
Traditional connectors
Wiring method
Multiple methods such as crimping, welding, and screw pressing
Most are fixed by crimping terminals or screws
Installation mode
Flexible methods such as panel installation, post-panel installation, and on-site assembly
Usually, only one or two fixation methods are supported
Quick-installation feature
Optional push-pull self-locking structure, supporting quick plugging and unplugging
Installation is more cumbersome and requires tools
Advantage Analysis: In sites where rapid maintenance and replacement of connectors are required, the M16 connector, with its standardized interface and modular structure, can significantly enhance construction efficiency.

Summary:Why are more and more enterprises turning to M16 circular connectors?

Enhance the reliability and stability of the system

Avoid equipment failure caused by poor contact

Reduce long-term maintenance costs

Meet the high-density and miniaturized wiring requirements of modern industry

It is applicable to various complex and harsh environments

Application field coverage:

Industrial automation system

Connection of medical equipment

Ships and rail transit

Intelligent manufacturing and robots

Outdoor communication and energy equipment
Traditional connectors still have their application space in basic electrical connections, but for industrial projects that pursue high reliability, high sealing performance and long-term stability, the M16 circular connector is undoubtedly a more reliable choice.

Choosing the right connector is not merely a replacement of a part, but rather an upgrade of the entire system's performance.

If you need to know more about the selection guides, electrical parameters or application cases of different models of M16 connectors, Welcome to communicate and consult!

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