Solid State Relay to Switch Transformer?

[irving2008]

Just been working on how I'm going to wire up my control box, and was wondering if a solid state relay would be upto switching the 625VA toroidal transformer.

Had a quick look on RS, and part no. 346-918 is rated at 25A continous, with a surge rating of 250A.
What kind of surge rating would be needed for switching a Toroidal?

Main reason for wanting to use a Solid State Relay, is I plan on switching it from the E-stop circuit (hitting an e-stop will kill power to the main transformer, and trigger the e-stop signal to the breakout board, while the 5v control supply is kept live).
Being able to switch the transformer direct from 5v will eliminate the need for an extra booster relay to switch the transformer, as I can't find any 5v relays capable of switching the transformer direct.

A 625VA transformer has a primary current rating of 2.6A and would normally be fused with a 5A fuse so that SSR is massively overspec'd . Unless you are planning to switch the secondary? If you are using it to switch the secondary then you will need to allow for the 1.6v approx drop across the SSR. This is irrelevant for switching the primary.

I use a 24v relay for switching my transformer but it comes in a 5v equivalent, with 10A 250v AC rated contacts. Costs £1.50, much cheaper than an SSR...