Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [terminal-block]

A terminal block is a screw-type electrical connector where the wires are clamped down to the metal part by a screw.

It is a connector which allows more than one circuit to connect to another circuit. It often contains two long aluminum or copper strips that are designed to connect different components. These strips create a bus bar for power/signal distribution that is sent to the connected components.

enter image description here

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Can I pass DC 36V 100A through a terminal block that is rated for DC 300V 30A?

In the system that I am designing, the peak current that the system requires is 80A at 36V DC. The terminal blocks that are available on the market are rated for 300V 30A. I want to know if the terminal rating is calculated based on the power that…
DeHeisenberg
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What kind of terminal block is this?

I've perused a few resources (linked below) trying to learn more about this strip / block, but they mostly have side views / cross sections. I just want to know what the things in this picture are called so I can replace them -- starting with the…
DJG
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Are there terminal blocks that are quick to attach for use in a production environment?

Is there a connector that I can use with a tinned wire that's easy to attach, are there any solutions available? I would use a terminal block but having to screw/unscrew several wires in a testing environment will add to production time.
Voltage Spike
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Trying to fix a mess with DC Power supply

I am not even close to know what I am doing with the electricity, but I have a power supply of my 8 cameras that is gone bad and I think I can manage to replace it myself, but there is a big BUT here. As you can see in the picture - someone did a…
Hristian Penchev
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Best practice for adding Resistor to PLC cabinet

My Micro-step drive and PLC need a simple resistor network between their i/o ports.The optocouplers in the stepper drive have a max input current of 15mA, while the controller needs to output at least 20mA to give valid signals. The circuit below…
seabiscuit
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Using a thermal fuse in a PCB terminal block?

(This is related to question How to solder a 70 °C (158 °F) thermofuse). Would it be a good idea to use a temperature/thermal fuse inside a terminal block like the picture below. I see only benefits: No problem destroying the fuse because of…
Michel Keijzers
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Three-phase motor 380 V wiring

I have a motor with this connection. I find it a bit strange that it has two terminals. I think it is a two-speed three-phase motor. Which diagram from the paper is being used in the connection and how do I make the connections so it works at 700…
gsoap
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What is the terminal on the photo?

Does any one know what is the name of terminal on the photo? Or what is the kind of the shown connectors, not necessarily the exact one? I tried sharpening the image and reading off the name but no results.
Igor Smorąg
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Wire Prep for Spring Terminal Block

I am assembling an electrical system for a project, and I'm using these terminal blocks because of their ease of use. Currently my wire ranges from 14awg stranded to 20awg stranded (20awg has some pretty fine strands). I'm connecting them bare to…
Aaron Beckman
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Using a terminal GND or VCC for multiple boards

If I have a screw terminal block like in the picture below, is it normal practice to use one of the six connections for GND towards multiple external boards? E.g. I wrap three wires into the rightmost connection and each of the three wires go to a…
Michel Keijzers
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What is the purpose of terminal blocks with a disconnecting neutral?

The terminal block (Wago 2003-7641) illustrated below has a neutral connection that can be grouped using a bus bar. This makes sense. However, the blue plastic block below can be used to disconnect the neutral of a particular block by moving…
Dmitri Nesteruk
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What flaws can be found in my Teensy 4.1 Break Out Board for Mini Sumo Robot schematic?

My schematic is divided in 4 different parts for easy understanding. First off, we have the power supply, it is composed of a screw terminal where the positive and negative end of a 3 cell, 11.1v LiPo battery will be placed. I have attached a LED…
EdimarDigital
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Crimped lugs or screw terminal for high current (100Amp-200Amp) connection

I am tidying the wiring in a motorhome that has got a bit out of hand over the years, the motorhome runs two 12V house batteries connected in parallel, I want to tidy the birds nest and improve circuit protection of the wiring that goes directly to…
mattnz
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Can a detachable terminal block be problematic for a 433 MHz whip antenna?

I have this board at hand: It is a gate opener, so it is installed outdoors. The board has a 433 Mhz receiver, whose antenna goes to a 2-pole terminal block. Normally, a simple whip is used but, having the terminal block, one can also remove the…
linuxfan says Reinstate Monica
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12V/5A power through DB9

Required to use a DB9 connector to pass DC to unit requiring 12V/5A supply. An easy way to do that is using a DB-9 to Terminal Block adapter. But most DB-9 to TB adapters I see have 3 A or less current rating per pin. How can use such adapter to…
eecs
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