SSR Interference - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Electric Brewing > SSR Interference

Thread Tools
Old 02-25-2011, 07:42 PM   #1
Jan 2010
Shippenville, PA
Posts: 104
Liked 1 Times on 1 Posts

I was wondering if I can mount my SSR in my enclosure with the heatsink protruding outward. Also, will the SSR cause interference with any of my temp controllers. 2-ranco's and 1-PID.

Reply With Quote
Old 02-25-2011, 07:59 PM   #2
Aug 2008
Portland OR
Posts: 5,387
Liked 63 Times on 59 Posts

Many people mount the heatsink outward, saves on having to put fans inside the box. As to interference it's always possible for one electronic device to mess with another, but I can't recall reading of anyone else having this problem with control panels. I did have my wireless control drop out of the network when I would turn my control panel on, never did track that down and just plugged into the network instead.

Reply With Quote
Old 02-25-2011, 08:01 PM   #3
Senior Member
Beer_Maker's Avatar
Nov 2008
Posts: 259
Liked 15 Times on 4 Posts

I've got mine in the control box and I haven't seen any interference. Granted I've only done a wet test, but it seemed to be fine to me. I let you know after I brew on it tomorrow.
-Light travels faster than sound. This is why some people appear bright until you hear them speak.

Reply With Quote
Old 02-25-2011, 08:05 PM   #4
trigger's Avatar
Aug 2010
Posts: 629
Liked 7 Times on 7 Posts

You can definitely mount the heatsinks to the exterior. Here's how I did mine:

I cut a large rectangle out of the box, then another rectangle from a sheet of aluminum that was about 2 cm larger than the cutout. Spread a bit of thermal compound on the mounting side of the SSR and heatsink, then bolt the SSR to the heatsink through the aluminum plate. Bolt the plate to the box, and seal it with some silicon if you feel the need.

As far as noise from the SSRs, I have my CP packed really tight, with no shielding on the RTD wires and haven't had any discernable issues so far. Other guys have shielded their RTD wires.

Reply With Quote
Old 02-27-2011, 12:26 AM   #5
SOB's Avatar
Dec 2006
Delaware, OH
Posts: 931
Liked 6 Times on 6 Posts

All I did was drill holes for the screws and mounted them on the enclosure with thermal paste on each side of the enclosure. These are actually "20A rated" heatsinks and I have no problems using them on my 40A SSRs. I think the enclosure actually helps with the heat dissipation. If you are using plastic it's a different story...

"So we were slammin' beers in the church parking lot..."

"I'm much too young to feel this damn old"

Reply With Quote
Thread Tools

Forum Jump