If you're not using both of the contacts, simply connect them in series and it should be fine at 2A, up to 60V.
Its not always that simple, relays with manufacturer ratings for series operation such as the Schrack RT2 for instance. Its possible to go the other way too and use a lower current relay with both contacts in parallel. Really needs testing on the specific load application.
Plus, in this application I need to expose both the normally open and normally closed contacts. Which is challenging. I've wondered about doing some odd wiring where you take the common of one pole and wire it to both "throws" of the second pole. That way the 'common' of the first pole is interrupted briefly by the switching of the second pole between the two poles, hopefully gaining you series wiring.
I've actually looked at the schrack RT2, but wasn't sure about the series wiring with needing both NO and NC contacts. I tonight noticed they have a latching version available which may actually negate the need for both contacts, but it's pretty pricey.
The Schrack RT2 is one of the few relays I've found which actually states the series wiring rating. At the voltage we're talking about, it's 2A for a single, but 8A for both in series. I wish that more relays were rated this way as I might find one that would work for this. Unfortunately, I'm not particularly willing to pass on a rating which I haven't had verified by a vendor, and we're small enough that asking a vendor to specify something else in their datasheet isn't likely to be result in any useful outcome.