The 1+N-pole design switches both phase and neutral, with the neutral pole switching but not protecting — common in single-phase final subcircuits where you want isolation on both conductors.
Installation depth is 70 mm — verify enclosure depth clearance if retrofitting into a shallow panel. The 1+N-pole format occupies the same footprint as a 1-pole MCB plus a separate neutral bar, but integrates the neutral switching into the same housing; useful for distribution boards where neutral isolation per circuit is required without adding a separate neutral link.
