Modular Terminal Blocks | McMaster-Carr

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281 Products

DIN-Rail Mount Terminal Blocks

Modular DIN-Rail Mount Terminal Blocks

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

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 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.

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.

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.

Modular Mini DIN-Rail Mount Terminal Blocks

Use with DIN 2 rail. Add as many circuits as you need with these terminal blocks and accessories.