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Z Motor Brake PCB holder for DIN rails

Z Motor Brake PCB holder for DIN rail brackets with 50mm between holes.
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updated November 13, 2025

Description

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Hello all,

I made a holder for two Z motor brake PCB boards (Project R3D). As we all know the common problem of most Voron printers with flying gantry's is the drop off if the electric power is cut off to the Z motors, so this PCB boards solve this problem. Anyway, the holder is made for DIN rail bracket (something like this one) with hole distance 50mm . The PCB need to be carefully slid into the slots. I have left some bulges inside that should fit into the bolt holes on the PCB's and lock them in place but they are not so good and reliable. Unfortunately, these bulges may be a little too high and the PCB's may not fit in easily or at all, so you may want to file them down. To ensure the PCB's do not fall out (because they can be head down in your printer), I have left a hole for a cable tie or other type of fastening. 

The Autodesk Fusion project is added too so anyone can make edits or remakes. 

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The author marked this model as their own original creation.

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