Terminal Boards | McMaster-Carr

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779 Products

Terminal Blocks

Mount blocks to a panel or the surface of a machine. Also known as barrier terminal strips.

Space-Saver Terminal Blocks

A single row of terminals fits in narrow spaces.

Quick and Secure Connect Terminal Blocks

The spring-clamp terminals on these blocks make wire installation faster than other types of terminals. These wire connections also stand up to vibration and temperature changes.

Short-Resistant Terminal Blocks

Recessed screw terminals prevent you from accidentally connecting two circuits with a screwdriver or other tool, causing a short.

Short-Resistant Easy-Disconnect Terminal Blocks

Best for equipment requiring regular servicing, these blocks disconnect without having to remove any wiring thanks to their plug-and-socket design. Their recessed screws prevent shorts by reducing the risk you’ll connect two circuits with a screwdriver or other tool.

High-Temperature Short-Resistant Terminal Blocks

Made of ceramic, these blocks withstand high-temperature applications that reach up to 1110° F such as ovens and furnaces. They have recessed screws to reduce the chance you’ll cause a short by accidentally connecting two circuits with a screwdriver or other tool.

Terminal Blocks with Built-In Configurable Jumpers

Customize these blocks’ wiring as your application changes. They come with jumpers that connect terminals on the same block, either across or next to one another.

Enclosure-Mounted Terminal Blocks

Save time when wiring connections in a junction box; these blocks come already installed in an enclosure.

Enclosure-Mounted Terminal
Blocks with See-Through Cover

Inspect the terminal block and wiring without opening the cover.

Quick and Secure Modular
DIN-Rail Mount Terminal Blocks

No need to tighten or loosen any screws—these terminals lock your wiring in place with spring clamps.

Modular DIN-Rail Mount Terminal Blocks

Use with DIN 3 rail. Add as many circuits as you need with these terminal blocks and accessories.

Clamp-On Modular DIN-Rail Mount Terminal Blocks

Quickly troubleshoot or change wiring without any tools. These terminal blocks have a lever clamp that you flip up to insert wiring and flip down to lock it in place.

Modular DIN-Rail Mount Terminal
Blocks with LED Status Indicator

Visually confirm your circuits are working as expected. These terminal blocks have integrated LEDs that indicate if your circuits are powered or not, helping you troubleshoot issues.

Connector-Compatible Modular
DIN-Rail Mount Terminal Blocks

One of the connections on these terminal blocks is a socket instead of a traditional terminal, making it easy to swap out equipment or change your wiring even in small enclosures. Instead of having to attach wire inside the tight space of your enclosure, you can wire a connector wherever it’s easiest and then plug it into the socket.