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Circular Connectors

Thanks to its cylindrical shape, a circular connector is an ideal piece of apparatus for connecting and sealing one cable or wiring to another while providing a high level of resistance against physical impacts and signal interference. This makes circular connectors especially useful in harsher environments.

If you’re searching for a high-performance terminal to connect cables in a setting that may involve high pressures, vibrations, temperature shocks, or similar kinds of mechanical turbulence, then look no further than our circular connectors. The same applies if you need cable connectors that are protected against interference from electromagnetic signals.

Of course, these high levels of protection also enable our extremely resilient circular connectors to withstand moisture and water, dirt and dust, and other particles that may otherwise get inside and potentially damage the cables within the connector.

We have a large selection of circular connectors available with next day delivery, with a variety of IP ratings and mating styles, as well as miniature and sub-miniature versions. Whether you need snap-in or push-pull connectors, screw-locking or bayonet connectors, or panel-mounted or board-mounted connectors, you’re sure to find exactly what you need for your project.

We also supply hybrid circular connectors, which conveniently connect both power circuits and signal circuits using a single shell.

Order circular connectors online

If you require high-quality circular connectors suitable for a comprehensive range of industrial applications, browse the wide selection on offer at Northern Connectors. We stock the very best circular connectors from the industry’s leading brands, delivering top-quality service every time.

Choose from a versatile range of robust and easy-to-use circular connectors from top manufacturers including Binder, Hirschmann, Hummel, Lumberg Automation and Souriau, with various types of locking mechanism, termination methods, and configurations to suit your needs. No matter what your application may be, we can help find the right product for you.

We are an ISO 9001-certified business with more than 35 years of industry experience, meaning you can rely on quality service from start to finish. We provide next-day delivery on in-stock items and have a low minimum order value to suit your individual requirements, as well as flexible call-off and scheduled order arrangements.

Browse our circular connectors below to find the product you need today. If you have any enquiries, contact our team of experts on 01744 815001, use the online chat, or complete our enquiry form and we can call at a time that is convenient for you.

76 items match your criteria:

Connectors for the food industry

Binder Snap-in Subminiature (620 Series)

Snap-in Miniature (720 Series) thumbnail

Binder Snap-in Miniature (720 Series)

Binder Bayonet NCC Subminiature Connectors (670 Series) - Industrial Connectors

Binder Bayonet NCC Subminiature (670 Series)

Binder Bayonet NCC Miniature Connectors (770 Series)

Binder Bayonet NCC Miniature (770 Series)

Binder RD24 Power Connectors (692, 693)

Binder RD24 Power (692, 693 Series)

CONEC IP67 RJ45 Industrial Ethernet

CONEC IP67 RJ45 Industrial Ethernet Series

HARTING M8 Connectors

HARTING M8 A-Coded Series

HARTING m12 Series - Industrial Connectors from Northern Connectors

HARTING M12 Series

HARTING M12 Stainless Steel (INOX) Connectors

HARTING M12 Stainless Steel Series

HARTING 7-8 Connectors

HARTING 7/8" Series

Harting M23 connectors

HARTING M23 Signal, Power & Hybrid Series

HARTING Han® F+B Connectors

HARTING Han® F+B Series

HARTING Har-Port Ethernet & USB Service Interfaces

HARTING Har-Port Series

HUMMEL M12 Connectors - Power (S, T, K & L-Coded)

HUMMEL M12 Power Series

HUMMEL M16 Connectors

HUMMEL M16 Signal & Power Series

HUMMEL M23 Connectors

HUMMEL M23 Signal Series

HUMMEL M23 Connectors

HUMMEL M23 Power & Hybrid Series

HUMMEL M23 RJ45 Connectors

HUMMEL M23 RJ45 Series

Hummel M23 Fast Ethernet PoE Connectors

HUMMEL M23 Fast Ethernet PoE Series

HUMMEL M16 & M23 Stainless Steel Connector Housings

HUMMEL M16 & M23 Stainless Steel Connector Housing Series

HUMMEL M27 Connectors

HUMMEL M27 Signal Series

HUMMEL M40 Connectors

HUMMEL M40 Power Series

Lumberg Automation M8 Connectors

Lumberg Automation M8 A-Coded Series

Lumberg Automation M12 Connectors

Lumberg Automation M12 A-Coded

M12 X-Coded thumbnail

Lumberg Automation M12 X-Coded

Lumberg Automation M8 & M12 Washdown Connectors

Lumberg Automation M8 & M12 Washdown Series

Lumberg Automation 7, 8 Connectors

Lumberg Automation 7/8" Series

Lumberg Automation M23 Connectors

Lumberg Automation M23 Series

Lumberg Automation Two Way Distributors T-Connectors

Lumberg Automation Two Way Distributors / T-Connectors Series

Binder Push-Pull Miniature Connectors 440 series

Binder Push-Pull Miniature (440 Series)

Souriau UTS Series

Souriau UTS Series

Circular connectors

Binder M16 IP40 (581, 680, 682 Series)

Souriau UTO Series

Souriau UTO Series

Souriau UTG Series

Souriau UTG Series

Souriau UTP Series

Souriau UTP Series

Souriau UTL Series

Souriau UTL Series

Binder Snap-in IP40 Subminiature Connectors (719, 709 Series)

Binder Snap-in IP40 Subminiature (719, 709 Series)

Binder Bayonet Connectors (710 Series)

Binder Bayonet Subminiature (710 Series)

Binder Micro Push-Pull Subminiature Connectors (420 Series)

Binder Push-Pull Micro (420 Series)

binder Push-Pull Subminiature Connectors (430 Series)

Binder Push-Pull Subminiature (430 Series)

Binder M9 IP40 Connectors (711 Series)

Binder M9 IP40 (711 Series)

Binder M9 IP67 Subminiature Connectors (712, 702 Series)

Binder M9 IP67 (712, 702 Series)

Binder Bayonet Miniature Connectors 678 series

Binder Bayonet Miniature (678 Series)

Binder M16 IP67 Miniature Connectors (423, 723, 425)

Binder M16 IP67 (423, 723, 425 Series)

Binder M23 Power Connectors 623

Binder M23 Power (623 Series)

Binder Bayonet Power Connectors 690

Binder Bayonet Power (690 Series)

Binder M25 Power Connectors 691

Binder M25 Power (691 Series)

Binder Bayonet HEC Power Connectors 696

Binder Bayonet HEC Power (696 Series)

Binder RD30 Power Connectors 694

Binder RD30 Power (694 Series)

Binder M5 Sensor & Automation Connectors 707

Binder M5 (707 Series)

Binder M8 Sensor & Automation Connectors (768, 718)

Binder M8 A-Coded (768, 718 Series)

Binder M12-A Coded Sensor & Automation Connectors (713, 763)

Binder M12-A Coded (713, 763 Series)

Souriau UTGX

Souriau UTGX Series

Souriau CLipper Series

Souriau Clipper Series

Souriau VGE1 - FER1 Series

Souriau VGE1 - FER1 Series

Binder M12-B Coded Sensor & Automation Connectors (715, 766)

Binder M12-B Coded (715, 766 Series)

Binder M12-D M12-X Coded Sensor & Automation Connectors (825, 876)

Binder M12 D-Coded / M12 X-Coded (825, 876 Series)

Binder M18 Sensor & Automation Connectors 714

Binder M18 (714 Series)

binder 7,8” Sensor & Automation Connectors (820, 870)

Binder 7/8” (820, 870 Series)

Binder M12 A-Coded Connectors for Food & Beverage Applications

Binder M12 Food & Beverage Series

Binder Bayonet NCC Miniature Connectors for Medical Applications 770

Binder Bayonet NCC Miniature (770 Medical Application Series)

Binder Snap-in Miniature Connectors for Medical Applications  720

Binder Snap-in Miniature (720 Medical Application Series)

Binder Snap-in Subminiature Connectors for Medical Applications 620

Binder Snap-in Subminiature (620 Medical Application Series)

Hirschmann CA Series

Hirschmann CA Series

Hirschmann CM Series

Hirschmann CM Series

Hirschmann NR Series

Hirschmann NR Series

Mennekes Wall Mounted Sockets

Mennekes Wall Mounted Socket Connectors

Mennekes Wall Mounted Inlet

Mennekes Wall Mounted Inlet Connectors

Mennekes Panel Mounted Sockets

Mennekes Panel Mounted Sockets

Mennekes Panel Mounted Inlet

Mennekes Panel Mounted Inlet Connectors

Mennekes IP67 Plugs

Mennekes Cable Plugs IP67

Mennekes IP44 Plugs

Mennekes Cable Plugs IP44

Mennekes IP67 Connectors

Mennekes Cable Connectors IP67

Mennekes IP44 Connectors

Mennekes Cable Connectors IP44

Hirschmann M12 A-Coded Cable Connectors

Hirschmann M12 A-Coded Cable Connectors (E-Series)

PBC15 Power (615 Series) thumbnail

Binder PBC15 Power (615 Series)

What are the benefits of circular connectors?

Circular connectors have become widely adopted across a range of industries due to their robust design, ease of use, broad range of configurations and extreme versatility. Consisting of multi-pin inserts sat within a robust mechanical housing with a circular design, they are capable of efficiently transmitting data, signal and power. 

These versatility of circular connectors and their broad range of benefits and useful attributes have helped them become an indispensable industry standard:

  • Easy to install and remove
  • Compact designs
  • Reliable and secure locking mechanisms
  • Sealed ingress protection up to IP68 & IP69K
  • Capable of housing various kinds of contact within the same shell

As a result of these benefits, circular connectors are widely used in the following sectors:

If you’d like to know more about how these essential components can work for you, take a look at our guide to circular connectors.

Why choose us?

At Northern Connectors, we combine an unbeatable range of circular connectors with industry-leading customer service. We work closely with many of the sector’s most trusted manufacturers to provide customers from all industries with the products they need, when they need them.

With more than 35 years of industry experience on our side, we are able to offer responsive, tailored customer support according to your requirements, and can advise you on any queries you might have. Here are some of the benefits of shopping with Northern Connectors: 

  • ISO 9001-certified quality assurance
  • Rapid service and personalised sales support
  • UK technical contacts and full manufacturer support
  • Flexible call-off and scheduled order arrangements
  • Next-day delivery on stocked items
  • Low minimum order value

Get in touch

To speak to us about any of our circular connectors, get in touch with the experts at Northern Connectors today. Call us on 01744 815001, use our online chat or complete an enquiry form. and we will be in touch.

Frequently Asked Questions

What are circular connectors?

Also known as ‘circular interconnects’, circular connectors are essentially what their name suggests – cylindrical mechanical shells used to connect cables in the form of multi-pin connectors. They ensure that data and power can be continuously transmitted safely between devices.

Circular connectors have been manufactured and implemented to deliver vital electrical signals that keep complicated systems and machinery running as they should, especially in demanding environments where their hardwearing design offers essential protection.

The cylindrical design of circular connectors allows them to reliably deliver a continuous stream of data and power without the cables becoming misaligned and accidentally decoupling, or being damaged by surrounding elements.

The contacts of a circular connector are typically made from oxygen-resistant metals like steel or brass, which can also be plated with another metal to improve their electrical conductivity, while the shell that houses and seals is often made from a resilient insulating material like moulded plastic or rubber.

How do circular connectors work?

Circular connectors function when a multi-pin male insert is inserted into the corresponding multi-pin female insert to create a secure connection.

When the male pin or female socket contacts within these inserts are inserted into one another the electrical current can flow from one to the other. The wiring used to make this connection possible will have been terminated into the rear of these pin or socket contacts by termination methods such as crimping, soldering or with toolless processes like screw or clamp. The wire termination method will be determined by the design of the pin or socket contact.

The circular interface is then protected by a cylindrical housing, which seals and protects the connecting system within. The number of contacts, size of the shell, and diameter of the connector should be proportional to its purpose – e.g. compact for things like small sensors, and larger for higher-power applications.

These connectors can also come with specifically designed backshells with ingress protection ratings, ensuring that the circular connectors are sufficiently protected from physical stresses, moisture, and electromagnetic disturbances.

Circular connectors can then either mount to cable ends or directly to entry points such as circuit boards and power panels.

Which type of circular connector do I need?

There are many different circular connectors to choose from, varying in the number of contacts they have, their overall diameter, and their shell type, amongst other factors. The specific type you need will depend on the nature of the connection and the environment you intend to use it in.

For example, a ‘standard’ circular connector will typically conform to common industrial standards to make them suitable for high-impact use, such as factory automation and robotics, while sub-miniature versions are extremely compact to make them suitable for sensors in medical applications.

If you already know which style of circular connector you’re looking for, you can browse the selection available on our website to find a product that matches your requirements. If you only need to replace a part, or you want to match a connector you’ve used previously, you can check the shell or internal components to identify their individual part numbers.

Alternatively, if you cannot find the part numbers or don’t know where to start when choosing a new circular connector, you can always contact us for advice on the most suitable circular connectors for your intended application.

Technical expertise is just a click away. For rapid service & personalised support, complete the following form or call 01744 815 001

What Our Customers Say

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“I am writing to your company today to say a very big thank you, I mainly speak to Fran she is such a lovely lady, nothing is to much trouble and your assembly workers are brilliant they have very kindly fitted in many urgent orders for me over the years and always deliver on time.

I love working with your company it is excellent so please say a very big thank you to all your staff, they have done you proud.”

Woods, Essex
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Long Term, Flexible Call-Offs

We can facilitate your Kanban, Just-in-Time requirements and schedule orders over a 12 month period, supporting contracts that require that extra level of support and taking advantage of secure pricing levels and stock availability.

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