Your browser does not support JavaScript


  CALL US: 1 (888) 261-3076     CONTACT US
Midwest Blog




Everything You Need to Know About Terminal Blocks
Wednesday, January 2, 2019

How do you connect two electrical wires? By removing the insulation of the wires from ends and then twisting them tightly together? Yes, this method of connecting wires works. But, it isn’t safe. You could apply some insulation tape to increase safety or use wire connectors. However, what if you need to connect several wires and they are located at close proximity or you need to connect several outgoing wires to an incoming wire? In that case, this method won’t be convenient or safe. Therefore, you should use terminal blocks.

Terminal Block

Terminal blocks are modular blocks that have a fully insulated frame and are used to securely connect two wires or more together. There is a conducting strip and clamping component in these blocks.
In the terminal block, there is an element like a terminal bar or metal strip for carrying current. The mounting arrangement of the body allows the block to be easily mounted on a PCB or unmounted from it. The number of blocks can be increased according to circuit requirements. Terminal blocks are perfect for keeping the wires organized and connections secure.

Types of Terminal Blocks

Structure Type
  • Single Level
    These terminal blocks are used for connecting two electrical wires together. It is the simplest type and present in one contact for input and one contact for output.
  • Dual Level
    These blocks come with another connected terminal stacked on top of first one. This arrangement saves space.
  • Three Level
    These terminal blocks have three levels. Multilevel blocks are convenient because a single block can be used for multiple connections.
Device Type
  • Ground Terminal Block
    These terminal blocks look like single level blocks. However, the metal connections and blocks are grounded to din rail or panel on which block is placed.
  • Fused Connection Terminal Block
    In a fused connection block, wires pass through a single fuse which provides extra protection.
  • Power Distribution Terminal Blocks
    Power distribution terminal blocks are used for electrical power distribution. They provide a safer, economical and convenient way to distribute electrical power from one input to multiple output sources.
  • Disconnect Terminal Block
    In these terminal blocks, wires can be disconnected easily by just lifting a knife switch or level. They offer more convenient connection and disconnection as wires don’t have to be removed. Disconnect blocks are also called switch blocks.
Clamping Options

Screw Terminal

The most commonly used connection method is screw clamp. The conductor or wire is pressed against terminal block’s conductor strip by simply loosening the screw. Once the wire is inside, it is tightened.

Spring Clamp

In these terminals, spring pressure is used for retaining the clamped wire. Spring clamp is mostly used for small wires.

There are a variety of terminal blocks available at Midwest Equipment. Check out our product catalogue to buy one.


Recent Posts

How to use Gateway Convertors
Wednesday, March 10, 2021

Voltage Monitor Relays
Wednesday, December 9, 2020

Why do you need a transformer ?
Wednesday, June 10, 2020

Relays vs. Solenoids vs. Contactors: A Comparison
Thursday, June 4, 2020

ABB Opens new distribution center in Phoenix!
Thursday, May 28, 2020

Search Posts


Blog Categories

  • General
    • 12/09/2020 - Voltage Monitor Relays
    • 02/13/2019 - 5 Benefits of Industrial Ether
    • 02/06/2019 - Remarkable Benefits of Liquid
    • 01/30/2019 - Electrical Protection of Induc
    • 01/16/2019 - 5 Causes of Motor Failure and
    • 01/02/2019 - Everything You Need to Know Ab
    • 12/28/2018 - Different Types of Soft Starte
    • 12/12/2018 - Different Types of Programmabl
    • 12/05/2018 - Variable Frequency Drive
    • 11/30/2018 - Applications of Programmable L
    • 11/14/2018 - The Importance of Relays
    • 11/07/2018 - Everything You Need to Know Ab
    • 07/27/2018 - What Are Unearthed Outlets & W
    • 07/11/2018 - The Difference between a Light
    • 07/02/2018 - How Can I Stop My Smoke Detect
    • 06/29/2018 - Understanding Operator Interfa
    • 06/13/2018 - The Importance of Brand Authen
    • 06/04/2018 - Stepper Motors for Machine Aut
    • 04/16/2018 - The Use of Soft Starters and I
    • 04/02/2018 - The Types & Advantages of Usin
    • 03/27/2018 - The New Designs of Contact Blo
    • 03/27/2018 - Important Things You Need to K
    • 03/14/2018 - Limit Switches Improve Safety
    • 03/05/2018 - Soft Starters- Advantages, Typ
    • 02/27/2018 - 8 Reasons to Use a Fuse
    • 02/16/2018 - 4 Benefits of Programmable Log
    • 02/06/2018 - 3 Reasons Why Circuit Breakers
    • 01/29/2018 - 2 Gas Based Generators You Did
    • 01/18/2018 - Common Types of Generators You
    • 01/05/2018 - 3 Machine Safety Measures That
  • Enclosures
  • Circuit Protection
  • Machine Safety
  • Midwest Enclosures
  • ABB New Facility
  • Relays vs. Solenoids vs. Contactors: A Comparison
  • Transformers
  • Gateway Convertors
  • New Mersen Product !

Subscribe To Our Blog


Subscribe for our newsletter program.

Credit/Tax Apps
Sell On Midwest
Government Buyers


Order Policy
Shipping Terms
My Account

Midwest Equipment
6555 Corporate Drive, Cincinnati, OH 45242
1 (888) 261-3076
Message Us

Follow Us on FacebookFollow us on TwitterFollow us on LinkedInBlog
The Midwest Equipment Co., Inc. BBB Business Review