11
votes
Can I pass DC 36V 100A through a terminal block that is rated for DC 300V 30A?
The application using a terminal block should keep within all of the block ratings. That is, it should have a lower Voltage, lower Current and lower Power.
Now there may be some wriggle room in the ...
- 174k
11
votes
Accepted
Can I pass DC 36V 100A through a terminal block that is rated for DC 300V 30A?
Your second premise is correct as with any connectors, it can handle only the maximum ratings in each respect alone.
So no going over the current spec because the voltage is lower.
Study the datasheet ...
- 18.1k
8
votes
Accepted
What kind of terminal block is this?
These are rail-mounted feed-through push-in terminal blocks. You can get them for all kinds of rail systems, the ones I've linked to are for NS15 rails.
- 20.5k
8
votes
Accepted
Are there terminal blocks that are quick to attach for use in a production environment?
The standard way to do this in a manufacturing environment is to use test fixture grabbers (my site).
They work with any wire, some even with unstripped wire (they perforate the insulation).
{My ...
- 25.6k
8
votes
Are there terminal blocks that are quick to attach for use in a production environment?
There's Wago-clamp style "lever-fixer" screwless terminal blocks.
Wago specifies these for stranded and solid wires, bare or crimped to a ferrule.
Similar ideas exist in varying degrees of ...
- 100k
6
votes
Are there terminal blocks that are quick to attach for use in a production environment?
An exemple a PCB version is available at :
https://www.phoenixcontact.com/en-in/new-products/new-products-device-connection-technology/lever-actuated-pcb-terminal-blocks-and-pcb-connectors
or
https://...
- 1,361
4
votes
Best practice for adding Resistor to PLC cabinet
I know this is an old question, but I found a couple more options for this while looking for something similar:
I found this from one supplier, haven't found anyone else that makes them.
Ocean ...
- 205
4
votes
Accepted
Best practice for adding Resistor to PLC cabinet
A search for "DIN rail component carrier" throws up images such as this.
Figure 1. A user-configurable PCB with screw terminals and DIN rail mount. Image source: Google image search.
For just one or ...
- 180k
4
votes
Accepted
Using a thermal fuse in a PCB terminal block?
In a commercial project the main disadvantage would be cost. A terminal block requires space and additional space to access it (might not be available at the point where the fuse should sit).
And it ...
- 18.1k
3
votes
Accepted
Identifying a connection terminal specification from photo
My Identiconn utility identified it as a Molex Picoblade, 3-wall header.
https://www.molex.com/en-us/products/connectors/wire-to-board-connectors/picoblade-connectors
{Source - Digikey}
EDIT - Plug ...
- 25.6k
3
votes
Are there terminal blocks that are quick to attach for use in a production environment?
If you aren't going directly to a PCB, the Wago 222/221 series are a good option for connecting wires with quick attachment and easy removal. They also make mounting carriers to hold them in place.
- 206
3
votes
Accepted
Three-phase motor 380 V wiring
It's a Dahlander, pole-changing, two-speed motor.
Here's the schematic.
Two terminal blocks have been provided to facilitate motor configuration for either 700 RPM or 1400 RPM.
A couple of ...
- 19.2k
3
votes
Looking For a Specific Connector
How about a part like 691508110302. Per the site, it is surface-mount and rated at 10A.
- 1,226
3
votes
Accepted
How to stack protoboards solidly?
Use male and female headers.
Female header with short pins:
(Image from grobotronics.com)
"Stackable" female header with long pins that go through to the next board (or can be simply cut to length)....
- 5,242
2
votes
Accepted
Do DIN rail mount interface relay modules with a "spare" terminal exist?
See Phoenix Contact FBST, it's a bar that goes in the slots under the wire connector you see on the blue relay module.
Finder will have similar. 093.16 for example. See their catalog.
Keep an eye on ...
- 24k
2
votes
Accepted
12V/5A power through DB9
There are some DB9 connectors with 5A rated pins. Most are 3A rated pins (or higher) Assuming you design for the lower standard your options are use a higher voltage and use a switching regulator to ...
- 73.4k
2
votes
What kind of terminal block is this?
I call these "DIN rail terminal blocks". They are made by Phoenix Contact, Weidmuller, and probably others.
If you look on the maker's or distributor's web sites, you will find a wide ...
- 60.7k
2
votes
Accepted
Trying to fix a mess with DC Power supply
I would crimp all the wires going to the same screw into a single spade terminal; all you need to do is make sure that the conductor cross sections are within the specified limits for the terminal you ...
- 23.1k
2
votes
DIN rail terminal block resistor
Through-hole components are pretty easy to connect to standard DIN-rail mounted terminal blocks. Either screw or spring-clamp terminals would be fine. You can use 3- or 4-terminal blocks to have ...
- 680
1
vote
Accepted
Difference between two terminal blocks
What are the actual names of these two types of terminal blocks? In
which cases, I should prefer one type over the other?
The second image shows a rising clamp arrangement.
Here's a view of the ...
- 473k
1
vote
DIN rail terminal block resistor
To convert a 4-20mA current output to a 2-10V signal, you can use an external resistor. Ohm's Law (V = I * R) can help determine the resistor value needed. For example, a 250-ohm resistor could ...
- 1,586
1
vote
Accepted
Barrier block vs. Lever wire splice for power distribution in a mobile robot
What you have there is a "barrier block" and a "lever wire splice".
Can you share the pros and cons of the barrier block and lever wire splice?
Between the two, the barrier block ...
- 25.6k
1
vote
What is the purpose of terminal blocks with a disconnecting neutral?
I can think of a few reasons one might want/need to isolate the neutral.
Depending on the situation and local regulations, the neutral may or may not be regarded as safe to touch during maintenance ...
- 23.1k
1
vote
What is the terminal on the photo?
That is a card-edge connector, wide pitch (you can measure it). Quite popular in the 70-80. Well, the current PCIe and the memory slots in PCs are based on the same technology so it would be more ...
- 8,754
1
vote
What kind of terminal block is this?
The general term is "din rail terminals". Well-known manufacturers include Pheonix Contact, Weidmuller and Wago, there are probablly others.
In addition to the regular terminals you will ...
- 23.1k
1
vote
Can a detachable terminal block be problematic for a 433 MHz whip antenna?
Even if the contact forms a thin non-conductive oxide layer, the proximity of the two contact halves will produce a capacitance of a few pF (worst case).
At 1 MHz, a 1 pF capacitor has an impedance of ...
- 473k
1
vote
12V/5A power through DB9
Seeing that 5A is already relatively high a current to pass it trough a d-sub pin, I'd recommend at least not putting a large terminal block at the connector. Instead, I'd get a connector with solder ...
- 1,789
1
vote
Do DIN rail mount interface relay modules with a "spare" terminal exist?
I've accepted @Jeroen3's answer, but for those looking for the actual product I've selected:
Finder 39.51.0.024.0060
39 series, the MasterOUTPUT modules
relay (not solid-state)
push-in terminals
24V ...
- 205
1
vote
Accepted
Using a terminal GND or VCC for multiple boards
If you do, the boards will experience a common mode voltage. The common mode voltage will be generated by the current from each of the boards and the resistance of the connector. If the loads are ...
- 88.8k
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