NEMA Terminal Blocks

Screw clamp connection in feed through and fusible—all simple to install!

NEMA Terminal Blocks starting at only $1.26! Configure below.

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Product Resources

Product Features

  • Rated 600V, 15-50 amperes.
  • Accommodates #22 to two #12 AWG wires (0.34-4mm2) per terminal.
  • Our 50A box type terminal block (DRTB50F) accepts #16 - #8 AWG wires.
  • Our modular (DRTB25) & flat-top (DRTB25F) blocks are color-coded in 6 colors options.
  • DIN rail mounting foot allows for simple mounting onto 35mm DIN rails.
  • Terminal markers available for easy circuit identification.

Top Best Sellers

  1. Feed Through, 25A, White
    p/n: DRTB25F
  2. Feed Through, 50A, White
    p/n: DRTB50F

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Terminal Blocks Defined

Terminal blocks are insulated, modular connectors that are designed to connect different circuits together. These components are also referred to as terminal connectors or connection terminals. Terminal blocks generally appear as a long strip made up of several individual terminals, hence the name.

The Perfect Range of NEMA Terminal Blocks

c3controls’ NEMA terminal blocks are both innovative and user-friendly. World-class in quality, they are simple to install and are color-coded for easy circuit identification. Available in feed through and fusible, are rated from 15A - 50A, and meet UL and CSA standards and are RoHS compliant.

NEMA Terminal Blocks

  • Screw clamp connections rated 600V from 25A to 50A
  • Accommodates #22 to two #12 AWG wires (0.34mm-4mm2) per terminal
  • Available in feed through and fusible from 15A to 50A
  • A variety of color-coded blocks for easy circuit identification


  • A variety of complementary accessories to any wiring application
  • Terminal marking strips available in blank or custom printed
  • 2-Point jumper strap for use with 25A blocks
  • Two types of 35mm DIN Rail; steel and aluminum in either 1m or 2m lenghts

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Still not sure? We offer free product samples for many of our products. No strings attached. We believe in our products and we think you will too, once you give them a try.

c3controls' NEMA Terminal Blocks are Engineered to a Higher Standard

Engineered for durability and easy installation, c3controls’ line of NEMA terminal blocks deliver easy installation and distinct functionality and reliability in applications exposed to high impact, shock and vibration.


Our snap-on, rugged DIN rail mounting foot is designed to easily attach terminal blocks while creating a secure fit.


NEMA type terminal blocks can be used with stranded or solid wire or ring type connectors.


Our screw clamp terminal blocks feature a vibration resistant zinc plated clamping system.

White Papers

Industrial Control Basics: Part 6 – Wire & Cable Management

Industrial control panels comprise of control circuits, power circuits, or a combination of both. These circuits generate signals that control the performance of equipment or machinery connected to them. Wires and cables are integral to these circuits, and they play a significant role in their functioning. Trends such as maximum efficiency, minimal downtimes, quick turnaround times, and time-to-market capabilities are critical to industrial users.


The Basics of a Terminal Block

Terminal blocks are insulated, modular connectors that are designed to connect different circuits together. The terminals serve different functions, such as they can be used to ground the wires, or connect outlets, as well as electric switches to the mains, in the presence of the electrical power. Terminal blocks are found on a variety of power management and industrial devices including motor protection relays, variable frequency drives, power supplies and connectors, programmable logic controllers, traffic controls, and so on.

Watch this video to learn about the different types of terminal block structures.

Best Practices for Control Panel Wiring featuring Terminal Blocks

Simplify your wiring and save valuable installation time with c3controls’ terminal blocks. UL listed and CE marked, our terminal blocks undergo the most demanding tests to guarantee longer lasting, easier to maintain panels.

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