I've used DIN rails for control systems with point to point wiring. How would one make the equivalent of a US circuit breaker panelboard using DIN components?

Are there _standard_ ways to do bus bars, or do you use wire taps between some bus point and the circuit breaker line side? Is there anything the equivalent of 'bus stabs' as used in the US?

The DIN standard describes the mounting rail, but not device width, height, or depth. This means that breakers from different manufacturers would mount on the same rail, but would not necessarily match for a front panel, wire protection panels, or bus connection (if any).

-Jon