Electronics > Manufacturing & Assembly

Does a DIN rail have to be a U shape?

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e100:
Are there any modules that expect there to be a void behind the mounting plane?

Would a simple shape like this work just as well for the vast majority of things with DIN rail mounts?

ataradov:
There are a lot of things that use this space, but I don't know how compatible they are to the actual standard. But they do exist in practice, so it is worth accommodating them.

Examples:
https://www.sourceasi.com/product/din-rail-knife-disconnect-terminal-block-green-lever-20-12awg-5-5mm-3/?ref=isp_rel_prd&isp_ref_pos=4
https://www.camdenboss.com/camden-boss/cdr-bracket-din-rail-mounting-bracket/c-23/p-16624
https://www.adafruit.com/product/4556

I have not seen big modules needing it, but I think a lot of small ones rely on it for additional support.

e100:

--- Quote from: ataradov on February 03, 2023, 03:23:38 am ---There are a lot of things that use this space, but I don't know how compatible they are to the actual standard. But they do exist in practice, so it is worth accommodating them.

Examples:
https://www.sourceasi.com/product/din-rail-knife-disconnect-terminal-block-green-lever-20-12awg-5-5mm-3/?ref=isp_rel_prd&isp_ref_pos=4
https://www.camdenboss.com/camden-boss/cdr-bracket-din-rail-mounting-bracket/c-23/p-16624
https://www.adafruit.com/product/4556

I have not seen big modules needing it, but I think a lot of small ones rely on it for additional support.

--- End quote ---

Interesting. These all appear to be designed to fit multiple sizes/shapes of DIN rail (top hat, mini top hat and G-section) using a series of nested slots. It looks like you should be able to cut out the redundant parts without compromising the integrity of the unit as a whole.

ataradov:
Then there are things like this https://www.auberins.com/images/DRCN_profile.jpg where it may be actually functional. Or at the very least it would be quite an undertaking to remove it. For contractors this form factor seems to be very wide spread.

Even in Adafruit case, it look like the width of the mount is at least 15 mm. And the geometry is not very accessible. Cutting all that  out is not going to be fun.

e100:

--- Quote from: ataradov on February 03, 2023, 04:59:56 am ---Then there are things like this https://www.auberins.com/images/DRCN_profile.jpg where it may be actually functional. Or at the very least it would be quite an undertaking to remove it. For contractors this form factor seems to be very wide spread.

Even in Adafruit case, it look like the width of the mount is at least 15 mm. And the geometry is not very accessible. Cutting all that  out is not going to be fun.

--- End quote ---

Contactors do look to be a problem. The 'keep out' plane appears to coincide with the rear face of the 1.5mm thick metal DIN rail.

For the other however, the oscillating multi tool comes to the rescue, wood, nails, dry wall, plumbing, electrical....anything

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