I am wanting to control a contactor with a 230v ac coil with the programmable relay in the multiplus ii, can the contacts of that relay be used with 230v ac to energise the 230v contactor coil?
From the tech specs in the manual:
Programmable relay which can be set for general alarm, DC under voltage or genset start/stop function. AC rating: 120V / 4A, DC rating: 4A up to 35VDC and 1A up to 60VDC
So not 230v ac compatible. Thats a shame, as it would mean having to drive a 48v coil, intermediate relay with 230v contacts to drive the contactor coil.
Ps i use relay on my MP2gx to switch 230v contactor
All manuals for conventional multis state 120V. GX states 230V. Perhaps an error. Let me ask.
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I am of a more direct approach type…
Open the unit, take a look at what’s written on the relay and all doubts will clear… 
Of course, all precautions taken for such action.
Thats a very good point. Also being i have a 50hz 230v model, youd think Victron would make provision to switch 230v via the relay.
Good job! 
Isn’t a great feeling now when you know that your future designs will be backed up by certainty and not by guessing?..
I’ll confirm it, but one thing to be careful of when using the individual component specification is that it doesn’t account for a limitation in how it was implemented. I.e it could be that the connection point, or PCB tract separation, isn’t suitable.
Again, not sure exactly in this instance yet, and I’ll confirm it, but wanted to balance using Alex’s direct approach over a published spec.
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So true !
You must also take into account if the PCB trace width from the relay to the connector is capable of supporting that current/voltage pair, but that also go under the direct approach method.
Sorry I didn’t mentioned it, sometimes observing things like this became a second nature and you take them for granted and forget to mention them… 
Thanks for the advice ive decided to use it with 230v, i connected it to my contactor today and its working perfectly. IMO it would be totally pointless of Victron to manufacture the circuit board for a 250v relay and place the traces so close together that tje flash over at 230v, especially being that the relay is on its own at the very bottom of the board with the 3 terminal connector directly under it. Even if it did flash over at 230v, its only connected to a contactor coil hich draws miliamps when energised, so no big deal, the contactor would stick in the on position. Im an electronics engineer and have seen 230v being used in much tighter spaces.
My system also uses relay to operate a contactor with 230v coil, no problem in use for the past 1.5yrs