CE listed IEC 60898-1 and IEC 60947-2 Curve C breakers in the USA

[brycenesbitt]

By bussing he may mean manufactured insulated compatible listed bus that

Yes, like that. Cross connectors like the Weidmüller 7940099051
or the UL 489 listed Eaton Z-SV/UL-16/1P-1TE/6


The box will have several 240V power sources, a whole long row of OCPDs, bussing as above, active control logic, and control affecting nearby equipment (the "branch circuits", depending on how you look at it) all in a closed system of conduit. I am aware that the multiple power sources requires some careful thinking about ground fault return current.

Finding breakers in this DIN rail format that allow double lugging has proven another smaller challenge.
It's not clear if the local AHJ requires or will accept UL 508A, likely they have no idea if that's mandatory or voluntary.

 

[petersonra]

Most of these style breakers allow two wires on the terminal, at least the ones I have used. But it is rare I need to do so.

 

[brycenesbitt]

Most of these style breakers allow two wires on the terminal, at least the ones I have used. But it is rare I need to do so.

I contacted two of the vendors, and received basically confused stares at the question.
Unlike the Square-D breakers where the 2 lug rule is clearly molded on the case, nothing is stated here on the case or in the documentation.
If you're aware of a brand that does allow two (stranded) wires, I'm all eyes.
--
Many of the terminals are GREAT for two wires: having a U shaped bit of metal that presses against a plate, that can clearly snug up multiple stranded wires.

But it's all about the listing....

 

[petersonra]

Look at the fifth feature they list

 

[Corysan]

Yes, like that. Cross connectors like the Weidmüller 7940099051
or the UL 489 listed Eaton Z-SV/UL-16/1P-1TE/6
View attachment 2573683 View attachment 2573684

The box will have several 240V power sources, a whole long row of OCPDs, bussing as above, active control logic, and control affecting nearby equipment (the "branch circuits", depending on how you look at it) all in a closed system of conduit. I am aware that the multiple power sources requires some careful thinking about ground fault return current.

Finding breakers in this DIN rail format that allow double lugging has proven another smaller challenge.
It's not clear if the local AHJ requires or will accept UL 508A, likely they have no idea if that's mandatory or voluntary.

You would have to "double lug". How else would you feed the array? Even the feeder lugs have to be "double lugged" on the circuit breaker.