The 25 best connector block brands in 2026
Phoenix Contact, WAGO and Amphenol lead our ranking of 25 connector block brands. Compare what each brand makes, visit its official site, or shop it online.
Connector Block brands, ranked
TSCentral is reader-supported: we may earn a commission when you shop through links on this page. It does not affect the ranking.
-
1
Phoenix Contact
Phoenix Contact makes a large range of terminal blocks, including spring, screw and push-in connection types for industrial wiring.
Website: phoenixcontact.com |Brands like Phoenix Contact
Popularity 10.0/10
-
2
WAGO
WAGO makes lever-nut and spring-clamp connector blocks for wire-to-wire connections in electrical installations.
Website: wago.com |Brands like WAGO
Popularity 5.3/10
-
3
Amphenol
Amphenol makes a broad range of electronic connectors, including board, cable and panel connectors used in industrial and telecom equipment.
Website: amphenol.com |Brands like Amphenol
Popularity 3.3/10
-
4
Dinkle
Dinkle makes terminal blocks, fuse holders and related connection products for industrial control panels.
Website: dinkle.com |Brands like Dinkle
Popularity 3.3/10
-
5
Siemens
Siemens makes terminal blocks and connection products for its industrial automation and control cabinets.
Website: new.siemens.com |Brands like Siemens
Popularity 3.1/10
-
6
Molex
Molex makes board-to-board and wire-to-board connector housings and terminals used in electronics and automotive products.
Website: molex.com |Brands like Molex
Popularity 2.6/10
-
7
HARTING
HARTING makes Han industrial connector housings and modular connector blocks for factory automation and power distribution.
Website: harting.com |Brands like HARTING
Popularity 2.6/10
-
8
Entrelec
Entrelec is a terminal block brand that makes screw, spring and push-in terminal blocks for control and automation panels.
Website: entrelecsales.com |Brands like Entrelec
Popularity 2.4/10
-
9
Eaton
Eaton makes terminal blocks and wiring accessories for electrical distribution and industrial control enclosures.
Website: eaton.com |Brands like Eaton
Popularity 2.2/10
-
10
Siemon
Siemon makes structured cabling products, including patch panels and 110-style connector blocks for voice and data networks.
Website: siemon.com |Brands like Siemon
Popularity 2.0/10
-
11
Legrand
Legrand makes electrical wiring devices and structured network connectivity products, including connector and patch panel systems.
Website: legrand.us |Brands like Legrand
Popularity 2.0/10
-
12
ABB
ABB makes terminal blocks and wiring accessories for low-voltage control cabinets and industrial electrical systems.
Website: new.abb.com |Brands like ABB
Popularity 1.8/10
-
13
Lumberg
Lumberg makes M12 and other industrial connectors, junction boxes and connection modules for automation equipment.
Website: lumberg-automationusa.com |Brands like Lumberg
Popularity 1.8/10
-
14
National Instruments
National Instruments makes data acquisition hardware and screw terminal connector blocks used to wire signals to its measurement devices.
Website: ni.com |Brands like National Instruments
Popularity 1.6/10
-
15
Pro-Power
Propower is an Indian company founded in 2016. They are one of the leading suppliers of the elevator in India. They manufacture elevator-related products such as control panels, ARD, hard drives, counterweight, control units, etc. The company has been making...
Website: propower.co.il |Brands like Pro-Power
Popularity 1.6/10
-
16
Littelfuse
Littelfuse is a world-class technology-producing enterprise that serves Thyristors, ESD suppressors, semiconductors, protection relays, sensors, etc. It was established in 1927 by Edward V. Sundt in Chicago, Illinois. The company mainly manufactures circuit protection appliances along with a variety of...
Website: littelfuse.com |Brands like Littelfuse
Popularity 1.6/10
-
17
Cooper
A family-run business, Cooper Street Cookies, produces delectable baked goods for the health-conscious consumer. Their cookies don't have dairy, gluten, or eggs because they solely use vegan ingredients. They are determined to create outcomes that are delicious and healthy. Cooper...
Website: cooperstreet.com |Brands like Cooper
Popularity 1.3/10
-
18
Commercial Electric
Commercial Electric is a house brand sold at Home Depot, offering wire connectors and basic electrical hardware.
Website: commercialelectric.com |Brands like Commercial Electric
Popularity 1.3/10
-
19
Fujikura
Fujikura makes optical fiber connectors, cable assemblies and related connection hardware for telecom and data networks.
Website: fujikuragolf.com |Brands like Fujikura
Popularity 1.3/10
-
20
METZ CONNECT
METZ CONNECT makes connector blocks, terminal blocks and connection modules for industrial and telecom wiring.
Website: metz-connect.com |Brands like METZ CONNECT
Popularity 1.3/10
-
21
CommScope
CommScope makes structured cabling systems, including patch panels, connector blocks and fiber distribution products for networks.
Website: commscope.com |Brands like CommScope
Popularity 1.3/10
-
22
IDEC
IDEC is a one-stop-shop to get solutions for all your industrial needs. Serving the customers for more than seventy-five years, the company provides products to enhance the efficiency of your business and manufacturing Unit. From Automation, Safety, and Explosion Protection...
Website: us.idec.com |Brands like IDEC
Popularity 0.9/10
-
23
Western Electric
Western Electric historically made telephone connecting blocks, including the widely used 66 block, and the name is now used separately.
Website: westernelectric.com |Brands like Western Electric
Popularity 0.9/10
-
24
Custom Connector
At Custom Connector Corporation, they draw on more than 40 years of expertise to create high-quality industrial transmission sockets, automotive relay sockets and adapters, electronic packing materials, terminal blocks, and specially designed electro-mechanical interconnect devices. All of these products are...
Website: customconnector.com |Brands like Custom Connector
Popularity 0.9/10
-
25
Dynacom
Dynacom, is a manufacturer of Wire Management, 110 Cross Connect, Wire, Management, 110, Cross-connect, wire management, backboard management, residential cabling, structured wiring, home network management, structured cabling for the voice and data industries.
Website: dynacomcorp.com |Brands like Dynacom
Popularity 0.9/10
Official websites and social accounts
| Brand | Website | X / Twitter | YouTube | ||
|---|---|---|---|---|---|
| Phoenix Contact | phoenixcontact.com | – | – | – | – |
| WAGO | wago.com | /WagoKontakttechnik | – | @WAGOKontakttech | WagoKontakttechnik |
| Amphenol | amphenol.com | /Amphenol-Corporation | amphenolltd | @amphenol | UCtscbXasDMWHhNVg5Kqp-5A |
| Dinkle | dinkle.com | – | – | – | – |
| Siemens | new.siemens.com | – | – | – | – |
| Molex | molex.com | – | – | – | – |
| HARTING | harting.com | /HARTING.in | – | – | HARTING Asia Pacific |
| Entrelec | entrelecsales.com | – | – | – | – |
| Eaton | eaton.com | /eatoncorporation | – | @eatoncorp | – |
| Siemon | siemon.com | /siemoncabling | – | @siemon | SiemonNetworkCabling |
Connector Block Buying Guide
A connector block is a device used to connect wires or cables together. Connector blocks are used in a variety of applications including electrical systems, lighting, HVAC control systems, and more. When buying a connector block, there are a few important factors to consider to ensure you get the right product for your needs.
1. Type of connector block
There are many different types of connector blocks available on the market. Some of the most common types include:
- Terminal blocks: These blocks are used to connect wires together and are commonly found in electrical systems.
- Wire connectors: These connectors are used to join wires together and are commonly used in lighting and other low-voltage applications
- Splice connectors: These connectors are used to connect two wires together and are commonly used in HVAC control systems.
- Butt connectors: These connectors are used to join two wires together end-to-end and are commonly used in automotive applications.
It's important to choose the right type of connector block for your application to ensure proper function and safety.
2. Size and capacity
Connector blocks come in various sizes and capacities, and it's important to choose the right one for your application. The size and capacity of a connector block determine how many wires can be connected to it and how much current it can handle.
When selecting a connector block, consider the total number of wires you need to connect and the amount of current the circuit will be handling. Make sure to choose a connector block with a sufficient rating to handle the load. It's also important to ensure that the connector block is the right size to fit your wires.
3. Material and insulation
Connector blocks are typically made from materials such as plastic, ceramic or metal. Each material has its own strengths and weaknesses.
- Plastic connector blocks are a good choice for low-voltage applications, but may not be suitable for applications where high temperatures, chemicals or UV light are present.
- Ceramic connector blocks are durable and can withstand high temperatures, making them a good choice for more demanding applications.
- Metal connector blocks are often used in industrial applications, but can be more difficult to install and may require additional insulation.
In addition to material, it's also important to consider the insulation of the connector block. Proper insulation can help prevent electrical shocks and protect the wires from damage.
4. Ease of installation
The ease of installation is an important consideration when choosing a connector block. You want a block that is easy to install and secure, to avoid any potential issues with loose connections.
Some connector blocks may require additional tools or hardware for installation, while others may be designed for quick and easy installation without the need for additional tools.
5. Price
The cost of a connector block can vary depending on the type, size, and material. While it's important to stay within your budget, it's also important to find a connector block that meets your needs and is of good quality.
Choosing a cheap, low-quality connector block can result in performance issues, safety concerns, and additional expenses in the long run.
6. Brand and reputation
When buying a connector block, it's important to choose a reputable brand. A good brand will reassure you that the product is of good quality, and comes with proper support and warranty.
You can check online reviews or ask for recommendations from other professionals in your field to find a reliable brand.
Conclusion
When buying a connector block, it's important to consider the type, size, material, ease of installation, price, and brand. By taking these factors into account, you can ensure that you choose the right connector block for your application and avoid any potential issues or safety concerns.
7. Environmental factors
Environmental factors such as temperature, humidity, and exposure to chemicals or UV light can affect the performance of a connector block. Therefore, it's essential to choose a connector block that can withstand the conditions to which it will be exposed.
For instance, if a connector block is to be used in high-temperature environments, you may want to consider a ceramic or metal block that can withstand those conditions. Similarly, if it will be exposed to UV light or chemicals, you may want to choose a block made from a material that can resist those elements.
8. Certifications and Standards
Before purchasing a connector block, it's important to check for certifications and standards that the product meets. For instance, a UL (Underwriters Laboratories) certification means that the connector block has gone through rigorous testing and meets safety standards set by the organization.
Other certifications and standards that may be important to check for include CE (Conformité Européene) certification for electrical safety, RoHS (Restriction of Hazardous Substances) compliance for the use of hazardous materials, and IP (Ingress Protection) rating for resistance to dust and water intrusion.
9. Compatibility with other components
Another factor to consider when buying a connector block is compatibility with other components in your system. For example, you may need to consider the size and type of wires that will be connected to the block, as well as the type of connectors that will be used.
If you're unsure about compatibility, it's best to consult the manufacturer or a professional in the field to ensure that you're making the right choice for your system.
10. Quantity and packaging
If you need to purchase a large quantity of connector blocks, you may want to consider the packaging and quantity options available. Some manufacturers may offer bulk packaging or discounts for large orders.
At the same time, it's important to ensure that the packaging and labeling are clear and easy to understand, so that you can identify the correct block for your needs.
Final Thoughts
Connector blocks may seem like a small component, but they play a critical role in connecting wires and cables together in many important applications. When purchasing connector blocks, take the time to consider the factors discussed above to ensure that you choose the right product for your needs.
Remember to check for certifications, compatibility with other components, environmental factors, and ease of installation, along with other factors. With the right connector block, you can ensure that your system runs smoothly and safely for years to come.
