What this 4-pole MCB brings to the panel
The neutral pole switches (product function confirms neutral conductor switching), so it isolates the full circuit during maintenance. Rated for AC/DC supply, 50 Hz, overvoltage category 3, energy limiting class 3. IP20 finger-safe for enclosed panel mounting.
Installation depth is 55 mm — shallow enough for shallow enclosures. Takes 3 width units (17.5 mm each, so 52.5 mm total).
How the 8 A C-curve compares to the 15 A sibling
The closest functional peer is 5SQ2670-0KA15 — same 4-pole 3P+N layout, same 3 kA breaking capacity, same C-curve, same 55 mm depth and 3 width units. The only difference is the current rating: 8 A here versus 15 A on the sibling. If your BOM calls for 8 A branch protection, this is the exact fit; the 15 A variant won't drop in without recalculating the load and coordination study. No rewiring needed — same terminal layout, same DIN footprint.