Terminal Block


Definition of Terminal Block

A terminal block is an electrical component used to connect multiple wires in a single location, allowing for easy installation and maintenance of electrical systems. It typically consists of a sturdy plastic or metal body with screw terminals that secure the wires in place.

Simply put, it's an electrical connector that enables you to attach wires in the same circuit without needing to splice them.

Splicing individual connections may work for the odd connection, but wherever multiple wires feed into a single power source or battery, it can become a mish-mash of wiring.

That’s where a terminal block comes in, ensuring safety and durability, as well as enabling easy installation, maintenance and customization of all electrical connections in your boat’s control cabinet.

Terminal blocks are classified according to structure, device type, and termination options.

Terminal Block Classification Terminal Block Example
  • Screw-in
  • Barrier
  • Push-fit
  • Pluggable
  • Insulation displacement
  • Spring loaded
  • Tab
Device type
  • Single level
  • Ground
  • Thermocouple
  • Fuse block
  • Multi-level
Termination options
  • Screw terminals
  • Spring
  • Push in
  • Insulation displacement connection
  • Crimp

Check out the fused terminal blocks at Apex Lighting, which have an added advantage of overcurrent protection, thanks to the fuses.

ATC/ATO Blade 6 Gang Fuse Block With Cover from Apex Lighting

ATC/ATO Blade 6 Gang Fuse Block With Cover

ATC/ATO Blade 12 Gang Fuse Block With Cover from Apex Lighting

ATC/ATO Blade 12 Gang Fuse Block With Cover

AGC Fuse Block With Cover from Apex Lighting

AGC Fuse Block With Cover

Example of Terminal Block in a Sentence

"The electrician used a terminal block to connect the wires from the circuit breaker to the light fixtures."

Synonyms: connection terminals, terminal connectors, screw terminals

Related Terms for Terminal Block