Question on wiring diagram for Pro 4PM with 1P+N

[PMG]

Regarding the wiring diagram where all appliances are protected with 1P+N breakers:

If the leftmost breaker (40A) is also 1P+N, then:

1. should the N input of the Pro 4PM connect to the 40A breaker N output?
2. should the N input to the appliance breakers connect to the 40A breaker N output?

FYI: I'm not connecting any switches to the Pro 4PM; my goal for this Pro 4PM is to monitor power usage of specific kitchen circuits (dishwasher, fridge, microwave oven and kitchen exhaust fan) directly on the switchboard; snubbers have been fitted to the wall outlets.  

Dumb question: wasn't able to understand what LSS means in the diagram? Equipment brand? If so, for curiosity, I have full Hager kit on my switchboard.

[thgoebel]

Please wire the devices as following:

LSS is the German abbreviation of „Leitungsschutzschalter“ which means Automatic Cut-Out.

[PMG]

Will do, thank you!