Relay switching AC/DC plug pack

I have a relay that is switching 240V supply to a plug pack. The plug pack in turn supplies 24V to a solenoid coil.

The relay has fused in the closed position and I'm trying to figure out why and the best way to protect it when I get a new one.

Am I correct in assuming the flyback from the solenoid is isolated by the plug pack?

And if so, will an RC snubber circuit be the correct way to prevent arcing when cutting supply to the plug pack?

The relays specs can be seen here: link

It's rated for 6A 250VAC and is switching a 0.9A plug pack.

simulate this circuit – Schematic created using CircuitLab

• Am I correct in assuming the flyback from the solenoid is isolated by the plug pack? That sentence makes no sense to me. Draw a schematic ! The relay contacts are fused by the current being too high. Many (poorly designed) power adapters have a large inrush current when they're connected to mains. This can fuse the relay's contacts. An RC snubber will not help you there. The inrush current needs to be limited. Nov 24 '16 at 8:16
• Sorry, I hope the drawing makes sense. Nov 24 '16 at 11:20
• Your schematic shows a simple transformer which produces AC output. You show the output as being 24 VDC. Which is it? Nov 24 '16 at 18:53

• Thank you. Is there any other way to control the input surge? My current setup will require 12 zero crossing SSRs and they seem to be $70-$130 each. Nov 24 '16 at 11:06