What this MCB does and where it fits
IP20 finger-safe construction and a 55 mm installation depth let it drop into standard DIN-rail enclosures without crowding adjacent devices.
At 3 A, this is a low-current branch; pair it with a downstream load that draws under 2.4 A continuous to stay below 80 % loading per common practice.
Occupies 3 width units on a DIN rail. The 55 mm installation depth leaves clearance for wiring ducts and adjacent breakers in shallow enclosures. Neutral conductor switching is integral — no separate neutral bar needed downstream of this breaker. IP20 provides basic finger-safe protection on the front face; the enclosure must shield live busbars behind the breaker.