SSR - solid state relay for AC powered heatbed - selfmade (5€)

by toolson, published

SSR - solid state relay for AC powered heatbed - selfmade (5€) by toolson May 10, 2015


Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag


Thing Statistics

3730Views 521Downloads Found in 3D Printer Parts


Solid state relay (SSR) for AC powered heatbed.

If you have an high power AC heatbed you need a SSR to use it with you RAMPS or similar.

Primary power: 12 VDC or 24 VDC
Secondary power: 230 VAC up to 2A (8A with additional cooling)

Please tell me if you need other attachment brackets.

Thanks to "Hardwarekiller" from RepRapForum for the idea with that Sharp part.

One last sentence:
If you build/use this relay you are dealing with deadly voltage. Be careful!


All you need is:

1 Set printed parts
1 Solid State Relais, Sharp S202 S02 (3,10 €)
1 Resistor 5,6k Ohm (0,30 €)
1 Clamp (4 pole) (0,40 €)
1 Fuse 2 - 3,5 A (0,08 €)
1 Fusebox (1,10 €)
1 PCB 29 x 29 mm
3 Nuts DIN 934 M3
3 Bolts DIN 912 M3x20 or similar

I bought my parts at: reichelt.de
Here are the needed part numbers:
S202 S02
MPR 5,60K
AKL 101-04
PL FPG1-40
UP 730 EP

More from 3D Printer Parts

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Sharp has stopped production of the S202 S02 a while ago. Can you name me an alternative? Everything I found is more expensive than a ready-to-connect SSR. Thanks!

I did a search a while ago and found no alternative.

Today it is the better way to buy a ready to connect one.

I had hoped to hear something different. :( Thank you for your quick reply!

Wouldn't it be safer to not have the slot on the cover over the live AC connections? The lid can be removed when connecting it up.

Thanks for your reply. I just made another lid. Now you can choose.