Aleph P 1.7 rate of RELAY_VOLTAGE

Hello Miles,
as I can see, the relais rail voltage is about 60V.
If we deduct the "control" mosfet Vdg, we obtai about 55-56V.
From the schematic, I suppose a series connection of two relais (left+right), but I'm not sure: the Aleph P "1.0" manual shows it clearly.
I found on RS Components catalogue only one 48V "signal" relais, this is suitable from about 33V to 66V, but "our" 56V are to be halved: maybe 28V for ultra-low switched currents are enough?
Maybe Pass did it, to extend the relais life?
I don't know....