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Old 03-10-2010, 12:50 AM   #1
paledragon
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Default DIN rail power distribution: a how-to guide

my first build used the bulky 175 amp distribution block that seems to be pretty popular. i've made things a little easier for myself with my current project. for anyone wanting something smaller, modular, expandable, removable, and all around easier to use, DIN rail terminal blocks are the way to go. functionally, they all do the same thing though.

1. start with DIN rail, which can easily be cut with a hacksaw:

http://www.mcmaster.com/#8961k15/

2. mount these on them (note the different wire and amp ratings):

http://www.mcmaster.com/#7641K51/

3. cover the open end of the block with one of these:

http://www.mcmaster.com/#7641K33/

4. jumper the middle of the terminal blocks:

http://www.mcmaster.com/#7641K15/

and you get:



the gray plate is the end cap. the screws in the middle are the jumpers. so the picture here has 1 inlet wire and up to 7 outlet wires. a nice benefit is being able to order by color as well, so they can be matched up with the hots, neutral, and ground wire colors.



the enclosure i used is 16" wide x 20" high by 8" deep.

p.d.



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Old 03-10-2010, 01:26 AM   #2
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That looks great. Just curious, what are you using as a backboard? The white board that everything is mounted to. Is it mounted with stand-offs?



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Old 03-10-2010, 01:28 AM   #3
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Nice write up. I already bought some terminal blocks on ebay but I may resell them go this route.

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Old 03-10-2010, 02:17 AM   #4
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where did you get the DIN SSRs and breakers?

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Old 03-10-2010, 02:41 AM   #5
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the enclosure comes with standoffs built in. you order a panel to fit into it separately. they both came from automation direct. the enclosure is part number N1C162008LP. the nice thing is you can build the panel outside the box, then just bolt it in.

the breakers came from mouser (part 845-1BU3R for the 3 amp breaker, 845-1BU1R for the 1 amp). the SSR's came from omega (http://www.omega.com/pptst/SSRDIN.html).

all the wiring is machine tool wire (MTW) from mcmaster.

p.d.

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Old 03-10-2010, 02:46 AM   #6
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I am not the OP but use the same type of mounting panel.

Quote:
Just curious, what are you using as a backboard? The white board that everything is mounted to.
The mounting panel shown is a painted steel panel made by the enclosure manufacturer.

Quote:
Is it mounted with stand-offs?
Yes, welded to the enclosure.

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Old 03-10-2010, 02:56 AM   #7
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Quote:
Originally Posted by paledragon View Post
the enclosure comes with standoffs built in. you order a panel to fit into it separately. they both came from automation direct. the enclosure is part number N1C162008LP. the nice thing is you can build the panel outside the box, then just bolt it in.

the breakers came from mouser (part 845-1BU3R for the 3 amp breaker, 845-1BU1R for the 1 amp). the SSR's came from omega (http://www.omega.com/pptst/SSRDIN.html).

all the wiring is machine tool wire (MTW) from mcmaster.

p.d.
Quote:
Originally Posted by ClaudiusB View Post
I am not the OP but use the same type of mounting panel.


The mounting panel shown is a painted steel panel made by the enclosure manufacturer.



Yes, welded to the enclosure.

Cheers,
ClaudiusB
Great. Thanks guys.
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Old 05-29-2012, 11:02 PM   #8
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BUMPing an old thread.

Is this still the best method, seems like a simple a clean method for electric setups.

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Old 05-30-2012, 12:59 AM   #9
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The DIN mounted terminals and devices are becoming the industry standard, crimp on lugs, exposed screws on terminal strips are not done anymore. I may be one of the code "Nazi's" but i would hate to see someone hurt or killed by ignoring the best known methods and electrical codes used today.

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Old 05-30-2012, 01:33 AM   #10
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Quote:
Originally Posted by kladue
The DIN mounted terminals and devices are becoming the industry standard, crimp on lugs, exposed screws on terminal strips are not done anymore. I may be one of the code "Nazi's" but i would hate to see someone hurt or killed by ignoring the best known methods and electrical codes used today.
I would like to do a control panel with as many din rail mounted components as possible. Anyone put there that has already put one together that has pictures and/or a parts list? I'm still trying to decide on input power (30 amp 240 is cheapest but I would like the actual control box componentry to not be limited or to have a selector switch to go between 30amp mode and a 50 or 60 amp mode). That suggests I include internal to the control box breakers, I would also like to have these din mounted. I am also still considering brewtroller or a bcs-400 type of setup. Looking for builds that I can use as a model. Thanks.


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