Circular Connectors

Reliable connections for every application - circular connectors from M8 to M23

In an increasingly digital environment, the reliable transmission of power, signals and data requires the rapid availability of standardised cabling solutions and the development of individual special cables. Irrespective of whether you require signal cables for sensor lines or data cables for Ethernet lines with different mating profiles – Weidmüller offers the right solution for every field of application.

Our extensive range of IP-protected circular connectors in sizes M8, M12, M16, M23 and 7/8" also ensures reliable wiring for your system. The different sizes are crucial for compatibility between connectors from different manufacturers and enable use in different applications. Particularly noteworthy are the M12 circular connectors, which guarantee reliable connections in demanding environments thanks to their robust design and IP67 protection rating. During development, we always concentrate on efficient and cost-effective assembly and installation concepts. In this way, we offer sophisticated products and set global standards in terms of functionality and quality. Our field-attachable circular connectors are available with a variety of connection techniques, including screw, tension spring, IDC, PUSH IN, crimp or solder connection technologies.

Comprehensive assortment

Our product portfolio includes all relevant circular connectors for industrial applications

100 % reliable connection

Circular plugs: Designed, tested, and manufactured for the highest requirements

Certified for worldwide use

The circular connectors meet the high requirements of worldwide standardisation

Product range of circular connectors

Our product range of circular connectors offers the right solution for every requirement - whether for signal, power or data transmission. Our M12 connectors in particular, which are available in five different connection technologies, fulfil the highest requirements in terms of flexibility and robustness. They are ideal for demanding applications and offer reliable connections in harsh environments thanks to their IP67 protection rating. To cover individual cable lengths and specific installation requirements, our portfolio also includes pluggable solutions for free assembly for M8, M12, M16 and 7/8" connections.

IP68 circular connector – Screwable and click-in M20 plugs Product innovation

Connect cables and applications safely and quickly

Our IP68 circular connectors enable secure connections for LEDs and control cabinet connections in external applications. The connectors ensure a tight connection between two cables or between the cable and the application. The great advantage of our new circular connectors: connections can be made particularly quickly and, especially, securely. The plugs are easy to use, have a haptic response and can be used universally in many application environments.

IP68 circular connector – Screwable and click-in M20 plugs

Your special benefits

The simple connection technology enables time-saving connection
Our IP68 connectors can also be used in demanding environments
Cable and built-in connectors can be used for customer-specific applications

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M8 and M12 connectors

Field attachable connectors with tension clamp, screw termination, crimp and IDC technology
Available in shielded and nonshielded, straight and angled versions
Available Codings: -A,-B,-D,-X

M8 plug M12 plug

M12 Power connectors

High power transmission without any problems
Available Codings: -K,-L,-S,-T
Power-coded M12 connectors designed for the transmission of up to 630V AC or 60 V DC and 16 A

M12 power connector

M23 connectors

Easy handling and a high security
High mating cycles, high current carrying capacity and a high contact density
Connector with compact design

M23 plug

7/8“ plug-in connectors

Low number of pins and sturdy construction
Connectors available with different numbers of poles
Suitable wall bushings and cord sets available

7/8" plug

M8 and M12 PCB connectors

All PCB connectors are suitable for reflow soldering
Available in different variants for different soldering methods
Optimise proven standards while making it easy and convenient to configure IP6x devices

M8 & M12 PCB connector

M20 connectors

Time-saving connection thanks to simple connection technology
2-, 3- and 5-pole versions, IP68 protection class
Application-specific application options for cable and flush-mounted connectors

M20 Stecker

Assembly tools for circular connectors

Screwty® for M8 plugs, M12 plugs and M23 plugs

Assembly tool for M8 plugs, M12 plugs and M23 plugs

Universal tool for tightening on all common sensor and actuator cables
Simply turn the tool to tighten or release the plug in connector
An adjustable torque fitting is available, for extra reliability

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Professional tools for the highest demands in use

Professional tools for circular connectors

A product range designed to work together, for perfect results
Tools for cutting, stripping, crimping, testing and screwing
Consistent processing quality at all times

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Services in the field of circular connectors

Free round plug sample product

Order design-in samples of your circular plugs quickly and easily: Use the free 72-hour sample service! We deliver your sample products of circular connectors to the desired location within 72 hours.

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Product configurator for circular connectors and cables

The configurator enables you to create SAI cord sets individually according to your requirements and specifications. You can configure cord sets that are identical at both ends, have two different connectors, or with one end left open.

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Handling videos for easy assembly of our M12 connectors and other circular connectors

You can find many useful handling videos on the use of our circular connectors and exciting company insights on our YouTube channel. Have a look and subscribe to our channel today!

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Perfect additions for round plugs

Single Pair Ethernet

Industrial plants are becoming increasingly digitalized, which means that conventional Ethernet cabling for sensors and control units is no longer sufficient. In developing new industry standards, Weidmüller relies on the innovative Single Pair Ethernet technology. Single Pair Ethernet enables the end-to-end connection of a large number of devices in the Industrial IoT, from the sensor to the cloud.

Fieldbus Distributors

Connecting smart field devices to your fieldbus segments. Our FBCon fieldbus distributors have EMC cable glands with high screening attenuation and are available in aluminum or stainless-steel variants as well as ATEX variants for hazardous areas. FBCon with integrated current limitation protect bus communication in the event of short circuits on the field device.

Distribution boxes

Modern automation solutions are becoming increasingly decentralised. As a result, you need components that can be easily integrated into the common automation systems and are more efficient to connect than time-consuming individual wiring. Flexible distribution boxes enable reliable, decentralised signal and power transmission up to protection class IP67 - wherever functions are required.

Cord sets, patch cables and cables

Whether standardised or individual: our demand-oriented assembly services support you in handling even the most complex of cabling tasks. Choose from our extensive range of prefabricated cables, or use our online configurator to create individual signal signal cables for sensors or data cables for Ethernet.

Signal wiring

Tailored application products with all benefits required for structured wiring of initiator and actor signals Our application-specific initiator/actuator terminalblocks (AIO) are specially designed for the signal wiring requirements posed byautomation now and into the future. You can benefit from tailored, really compactsolutions for the structured wiring of initiator and actuator signals with the inputand output modules of a programmable logic controller (PLC).