Confirming PSU spec for steppers.

[Rogue]

Just out of interest, can multiple contacts be wired together, ie a 4 pole with contacts rated for 10VDC@10A wired in series to make effectively a single contact of 40VDC@10A? Or would teeny tiny difference in switching speeds cause one set of contacts to close first and take the full brunt before the other contacts caught up, leading to melting, fusing and the opening of portals to alien dimensions?

I ask because one of the plans had a relay for the bleed resistor on the 70V circuit, but I've not seen many (well, any) relays with 70VDC contacts.

Edit: Thinking about it, voltage increases in series - if it's in series then it doesn't matter if they all close at exactly the same time or not.